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Asteroid 951 Gaspra

Alternate IDs:
1916 S45, 1955 MG1, A913 YA
Asteroid 951 Gaspra (top)

2MASS Asteroid and Comet Survey V2.0 (1 data product)

J MAGNITUDE 2MASS * J band selected magnitude in the 2MASS survey, or if the source is not detected in the J-band, the 95% confidence upper limit derived from a 4 arcsec radius aperture measurement taken at the position of the source on the Atlas Image. (The Atlas Images are quick-look images suitable for deriving positional information but not accurate photometry.) The origin of the magnitude is given by the first character of the rd_flg value.
(MAGNITUDE)
J MAGNITUDE 2MASS UNC * Corrected photometric uncertainty for the J-band magnitude in the 2MASS survey. If rd_flg[1]=2, this is the measurement error from the profile-fitting procedure, corrected to be consistent with observed repeatability statistics. If rd_flg[1]=1 or 4, this is the RMS of the brightness measured in aperture photometry on the individual frames. If rd_flg=3, the uncertainty is derived from the residuals to the 1-d radial profile fit (averaging over azimuth) to the unsaturated wings of the bright source. If J_MAG_SIG > 8.0, it is a flag value indicating that a meaningful uncertainty could not be determined for the source. This column is null if the magnitude is a 95% confidence upper limit (rd_flg[1]=0 or 6) or if the source is not measurable (rd_flg[1]=9).
(MAGNITUDE)
H MAGNITUDE 2MASS * H band selected magnitude in the 2MASS survey, or if the source is not detected in the H-band, the 95% confidence upper limit derived from a 4 arcsec radius aperture measurement taken at the position of the source on the Atlas Image. (The Atlas Images are quick-look images suitable for deriving positional information but not accurate photometry.) The origin of the magnitude is given by the second character of the rd_flg value.
(MAGNITUDE)
H MAGNITUDE 2MASS UNC * Corrected photometric uncertainty for the H-band magnitude in the 2MASS survey. If rd_flg[2]=2, this is the measurement error from the profile-fitting procedure, corrected to be consistent with observed repeatability statistics. If rd_flg[2]=1 or 4, this is the RMS of the brightness measured in aperture photometry on the individual frames. If rd_flg=3, the uncertainty is derived from the residuals to the 1-d radial profile fit (averaging over azimuth) to the unsaturated wings of the bright source. If H_MAG_SIG > 8.0, it is a flag value indicating that a meaningful uncertainty could not be determined for the source. This column is null if the magnitude is a 95% confidence upper limit (rd_flg[2]=0 or 6) or if the source is not measurable (rd_flg[2]=9).
(MAGNITUDE)
KS MAGNITUDE 2MASS * Ks band selected magnitude in the 2MASS survey, or if the source is not detected in the Ks-band, the 95% confidence upper limit derived from a 4 arcsec radius aperture measurement taken at the position of the source on the Atlas Image. (The Atlas Images are quick-look images suitable for deriving positional information but not accurate photometry.) The origin of the magnitude is given by the third character of the rd_flg value.
(MAGNITUDE)
KS MAGNITUDE 2MASS UNC * Corrected photometric uncertainty for the Ks-band magnitude in the 2MASS survey. If rd_flg[3]=2, this is the measurement error from the profile-fitting procedure, corrected to be consistent with observed repeatability statistics. If rd_flg[3]=1 or 4, this is the RMS of the brightness measured in aperture photometry on the individual frames. If rd_flg=3, the uncertainty is derived from the residuals to the 1-d radial profile fit (averaging over azimuth) to the unsaturated wings of the bright source. If KS_MAG_SIG > 8.0, it is a flag value indicating that a meaningful uncertainty could not be determined for the source. This column is null if the magnitude is a 95% confidence upper limit (rd_flg[3]=0 or 6) or if the source is not measurable (rd_flg[3]=9).
(MAGNITUDE)
13.437 0.021 12.956 0.026 12.907 0.030
13.492 0.025 13.032 0.026 12.959 0.026
14.465 0.040 14.050 0.050 13.898 0.062
14.542 0.032 14.025 0.039 14.016 0.070

Asteroid 951 Gaspra (top)

Asteroid Lightcurve Derived Data V16.0 (2 data products)

LC PERIOD FLAG * Flag referring to the sidereal period given in the asteroid lightcurve parameters file, taking the following values: > - less than < - greater than D - no numeric value (see P_NOTE for details) S - sidereal period (default is synodic period) U - period uncertain This is not the same as ambiguous where one or more additional periods are reported. LC PERIOD NOTE * Note with further information about the period given in the asteroid lightcurve parameters file. LC PERIOD * Rotation period of the asteroid about its axis, in hours, in the asteroid lightcurve parameters file. The period given is synodic unless the S flag (sidereal) is set in P_FLAG.
(HOUR)
LC PERIOD ERR * Error in the rotational period given in the asteroid lightcurve parameters file.
(HOUR)
LC AMPLITUDE FLAG * A flag pertaining to the amplitude of the lightcurve in the asteroid lightcurve parameters file, given in AMP_MIN and AMP_MAX. < - less than > - greater than LC AMPLITUDE MINIMUM * Lightcurve amplitude minimum, in the asteroid lightcurve parameters file. In the cases where a range of amplitude is given, this is the lower limit of the range. For individual observations for which a single value of the amplitude is given, this field contains a null value.
(MAGNITUDE)
LC AMPLITUDE MAXIMUM * Lightcurve amplitude maximum in the asteroid lightcurve parameters file. In cases where a range of amplitudes is given, this field is the upper limit of the range. In cases where a single value is given for the amplitude, this field is that value and a null value is given for AMP_MIN. Both AMP_MIN and AMP_MAX contain a null value if the publication did not include an amplitude.
(MAGNITUDE)
LC AMPLITUDE ERR * Error in the lightcurve amplitudes given in the asteroid lightcurve parameters file.
(MAGNITUDE)
LC QUALITY CODE * This code describes the reliability of the lightcurve results in the asteroid lightcurve parameters file, and takes the following values: 0 - Result later proven incorrect. This appears only on records of individual observations. 1 - Result based on fragmentary lightcurve(s), may be completely wrong. 2 - Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Also, a quality of 2 is used to note results where an ambiguity exists as to the number of extrema per cycle or the number of elapsed cycles between lightcurves. Hence the result may be wrong by an integer ratio. 3 - Denotes a secure result with no ambiguity and full lightcurve coverage. 4 - In addition to full coverage, denotes that a pole position is reported. In some cases, the numerical quality code may be followed by a plus or minus sign, indicating that the reliability is judged somewhat better (+) or worse (-) than implied by an un-signed number alone. This refinement in scale has been only recently added, and not yet retroactively, so most entries don't have signs, even in some cases where they would be appropriate. LC NOTES * Notes pertaining to the lightcurve reported in the asteroid lightcurve parameters file. These are one-letter flags, one or more of which may appear in the column. ? - Usually tied with 'T' to indicate uncertainty. 1 - Monomodal curve (one min/max per rotation) 3 - Trimodal curve (three min/max per rotation) 4 - Quadrimodal curve (four min/max per rotation) A - Ambiguous period D - Period determined by us that differs from that given in the original publication E - Occultation observation H - Space telescope observations I - IR/Thermal observations M - Polarimetric observation N - No lightcurve published O - Adaptive optics observation P - Photographic photometry R - Radar observation T - Tumbling (Non-principal axis rotation - see lc_npa.tab for details) V - Visual photometry Additional flags associated with the T flag are as follows: None after the T - The asteroid is definitely tumbling ? : Possible tumbler 0 : The tumbling damping timescale is long enough that tumbling might be expected, but observations are not sufficient to substantiate either tumbling or not tumbling. - : The tumbling damping timescale is long enough that tumbling might be expected, but observations indicate the object is NOT tumbling. + : The tumbling damping timescale is short enough that tumbling would not seem likely, however, observations indicate that it may be tumbling or actually is tumbling. LC BINARY FLAG * Note regarding binarity in the asteroid lightcurve parameters file: ? - Possible, usually due to lacking mutual eclipse/occultation events B - Binary system M - Multiple system, more than two LC REFERENCE ID * A short version of the reference citation for the published paper in which the values in this entry (in the asteroid lightcurve parameters file) were reported. The full citations may be found in the file lc_references.tab.
S 7.042027 0.000005 . N Hanus 2013c
. I Mainzer 2011
. I WISE
. I AKARI
. N Veres 2015
7.0422 0.0004 0.35 0.02 2 Dykhuis 2016
7.0418 0.0004 0.42 0.02 3- Dykhuis 2016
7.09 1.0 3 Di Martino 1990
. H Thomas 1994
. Davies 1994
S 7.04201 . Tungalag 2002
7.09 1.0 3 N Barucci 1989
7.042 0.55 3 Goldader 1991
7.042 0.2 1.0 3 Magnusson 1992
S 7.042058 3 Kaasalainen 2001
. Barucci 1992b
7.03 0.65 3 M Wisniewski 1993
S 7.04207 . De Angelis 1995a
S 7.04207 . De Angelis 1992
. Mottola 1992

LC REFERENCE ID * A short version of the reference citation for the published paper in which the values in this entry (in the asteroid lightcurve parameters file) were reported. The full citations may be found in the file lc_references.tab. LC SPINAXIS QUALITY CODE * The Q value gives our assessment of the quality of the pole solution. 0 Either wrong or very uncertain determination 1 Possible but not certain pole determination. This will most often appear when a limited number of data sets is used, especially if methods other than lightcurve inversion are involved. 2 Good determination, based on large dataset. The solution consists of one or two solutions (and possibly their 180 degree mirrors). If two solutions, they may differ in both longitude and latitude but not by the simple 180 degree mirror. 3 Very good determination, based on large dataset, an ambiguity of about 180 degrees in pole longitude might appear. 4 Excellent determination, pole position confirmed by methods based on independent datasets (for example, lightcurves and radar data, lightcurves and spacecraft fly-by). P A prograde rotation has been determined but no specific pole position has been determined. This will be followed by a 0 or 1, indicating the quality of the determination. R A retrograde rotation has been determined by no specific pole position has been determined. This will be followed by a 0 or 1, indicating the quality of the determination. In some cases, the numerical quality code is followed by a plus or minus sign, indicating that the reliability is judged somewhat better (+) or worse (-) than implied by an un-signed number alone. If the Q value is blank, the given pole solution has not yet been reviewed under the new rating system. LC PERIOD * Rotation period of the asteroid about its axis, in hours, in the asteroid lightcurve parameters file. The period given is synodic unless the S flag (sidereal) is set in P_FLAG.
(HOUR)
LC AMPLITUDE MAXIMUM * Lightcurve amplitude maximum in the asteroid lightcurve parameters file. In cases where a range of amplitudes is given, this field is the upper limit of the range. In cases where a single value is given for the amplitude, this field is that value and a null value is given for AMP_MIN. Both AMP_MIN and AMP_MAX contain a null value if the publication did not include an amplitude.
(MAGNITUDE)
LC SPINAXIS ECLIPTIC LONGITUDE 1 * Ecliptic longitude of the first solution in the spinaxis file of the asteroid derived lightcurve data set
(DEGREE)
LC SPINAXIS ECLIPTIC LATITUDE 1 * Ecliptic latitude of the first solution in the spinaxis file of the asteroid derived lightcurve data set
(DEGREE)
LC SPINAXIS ECLIPTIC LONGITUDE 2 * Ecliptic longitude of the second solution in the spinaxis file of the asteroid derived lightcurve data set
(DEGREE)
LC SPINAXIS ECLIPTIC LATITUDE 2 * Ecliptic latitude of the second solution in the spinaxis file of the asteroid derived lightcurve data set
(DEGREE)
LC SPINAXIS ECLIPTIC LONGITUDE 3 * Ecliptic longitude of the third solution in the spinaxis file of the asteroid derived lightcurve data set
(DEGREE)
LC SPINAXIS ECLIPTIC LATITUDE 3 * Ecliptic latitude of the third solution in the spinaxis file of the asteroid derived lightcurve data set
(DEGREE)
LC SPINAXIS ECLIPTIC LONGITUDE 4 * Ecliptic longitude of the fourth solution in the spinaxis file of the asteroid derived lightcurve data set
(DEGREE)
LC SPINAXIS ECLIPTIC LATITUDE 4 * Ecliptic latitude of the fourth solution in the spinaxis file of the asteroid derived lightcurve data set
(DEGREE)
LC SPINAXIS SIDEREAL PERIOD * Sidereal period of the spinaxis solution in the spinaxis file of the asteroid derived lightcurve data set.
(HOUR)
LC SPINAXIS SHAPE FLAG * Flag for shape model in the spinaxis file of the asteroid derived lightcurve data set: Y = shape model exists
summary 9+ 7.042 1.0
Goldader 1991 9+ 7.042
De Angelis 1992 3 19.0 20.0 7.04207 Y
Magnusson 1992 2 20.0 22.0 198.0 13.0 7.04207 Y
Barucci 1992b 3- 15.0 24.0 Y
Davies 1994 4 19.0 21.0
De Angelis 1995a 3 19.0 29.0 7.04207 Y
Kaasalainen 2001 3 20.0 19.0 7.042058 Y
Tungalag 2002 3 20.0 26.0 7.04201 Y
Hanus 2013c 2 20.0 23.0 198.0 15.0 7.042027

Asteroid 951 Gaspra (top)

Asteroid Photometric Catalog V1.1 (24 data products)

thumbnail for indiv/ast000951/19880815231231_v.tab

000951_19880815231231_V_TAB

time: 1988-08-15T23:12:31      file: indiv/ast000951/19880815231231_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19880816235527_v.tab

000951_19880816235527_V_TAB

time: 1988-08-16T23:55:27      file: indiv/ast000951/19880816235527_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900118112131_v.tab

000951_19900118112131_V_TAB

time: 1990-01-18T11:21:31      file: indiv/ast000951/19900118112131_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900211055248_v.tab

000951_19900211055248_V_TAB

time: 1990-02-11T05:52:48      file: indiv/ast000951/19900211055248_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900212101126_v.tab

000951_19900212101126_V_TAB

time: 1990-02-12T10:11:26      file: indiv/ast000951/19900212101126_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900220221646_b.tab

000951_19900220221646_B_TAB

time: 1990-02-20T22:16:46      file: indiv/ast000951/19900220221646_b.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900220221907_v.tab

000951_19900220221907_V_TAB

time: 1990-02-20T22:19:07      file: indiv/ast000951/19900220221907_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900220222015_r.tab

000951_19900220222015_R_TAB

time: 1990-02-20T22:20:15      file: indiv/ast000951/19900220222015_r.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900221184506_v.tab

000951_19900221184506_V_TAB

time: 1990-02-21T18:45:06      file: indiv/ast000951/19900221184506_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900221190823_b.tab

000951_19900221190823_B_TAB

time: 1990-02-21T19:08:23      file: indiv/ast000951/19900221190823_b.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900221191301_r.tab

000951_19900221191301_R_TAB

time: 1990-02-21T19:13:01      file: indiv/ast000951/19900221191301_r.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900222185022_v.tab

000951_19900222185022_V_TAB

time: 1990-02-22T18:50:22      file: indiv/ast000951/19900222185022_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900222185519_b.tab

000951_19900222185519_B_TAB

time: 1990-02-22T18:55:19      file: indiv/ast000951/19900222185519_b.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900222185955_r.tab

000951_19900222185955_R_TAB

time: 1990-02-22T18:59:55      file: indiv/ast000951/19900222185955_r.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900223105812_v.tab

000951_19900223105812_V_TAB

time: 1990-02-23T10:58:12      file: indiv/ast000951/19900223105812_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900312052711_v.tab

000951_19900312052711_V_TAB

time: 1990-03-12T05:27:11      file: indiv/ast000951/19900312052711_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900413061216_v.tab

000951_19900413061216_V_TAB

time: 1990-04-13T06:12:16      file: indiv/ast000951/19900413061216_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900415055001_v.tab

000951_19900415055001_V_TAB

time: 1990-04-15T05:50:01      file: indiv/ast000951/19900415055001_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900416053220_v.tab

000951_19900416053220_V_TAB

time: 1990-04-16T05:32:20      file: indiv/ast000951/19900416053220_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19900518063501_v.tab

000951_19900518063501_V_TAB

time: 1990-05-18T06:35:01      file: indiv/ast000951/19900518063501_v.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19910516032221_gll_grn.tab

000951_19910516032221_GLL-GRN_TAB

time: 1991-05-16T03:22:21      file: indiv/ast000951/19910516032221_gll_grn.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19910516032455_gll_red.tab

000951_19910516032455_GLL-RED_TAB

time: 1991-05-16T03:24:55      file: indiv/ast000951/19910516032455_gll_red.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19910517024048_gll_vlt.tab

000951_19910517024048_GLL-VLT_TAB

time: 1991-05-17T02:40:48      file: indiv/ast000951/19910517024048_gll_vlt.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
thumbnail for indiv/ast000951/19910517025244_gll_mt2.tab

000951_19910517025244_GLL-MT2_TAB

time: 1991-05-17T02:52:44      file: indiv/ast000951/19910517025244_gll_mt2.tab      dataset: Asteroid Photometric Catalog V1.1

The Asteroid Photometric Catalog is intended to be a compilation of all published photometric data on lightcurves of asteroids. This dataset includes the third update to the APC, and is therefore complete through 1992. This file contains a single asteroid lightcurve.
Asteroid 951 Gaspra (top)

Asteroid Spin Vector Compilation V5.0 (1 data product)

SPIN DATA CODE * A set of single letter codes used in the asteroid spin vectors compilation, identifying the type of information on which the solutions and rejections of spurious solutions in this record are based. The codes used are: A = Amplitudes of lightcurves C = Close observations from spacecraft during fly-by or rendezvous D = Individual data-points of photometric lightcurves E = Epochs (e.g. times of lightcurve extrema) F = Fourier coefficients of photometric lightcurves I = Infrared pre- and post-opposition differences L = Lightcurve inversion M = Magnitudes (usually at maximum light) O = Occultation observations P = Infrared polarimetry R = Radar observations S = Surface resolved (e.g. speckle data, adaptive optics) V = Visual position angles Z = Zero and non-zero amplitude apparitions imply pole-on view in former case SPIN POLE 1 LONGITUDE * Ecliptic longitude (equinox B1950.0) of the first spin vector solution in the asteroid spin vector compilation.
(DEGREE)
SPIN POLE 1 LATITUDE * Ecliptic latitude (equinox B1950.0) of the first spin vector solution in the asteroid spin vector compilation.
(DEGREE)
SPIN POLE 2 LONGITUDE * Ecliptic longitude (equinox B1950.0) of the second spin vector solution in the asteroid spin vector compilation.
(DEGREE)
SPIN POLE 2 LATITUDE * Ecliptic latitude (equinox B1950.0) of the second spin vector solution in the asteroid spin vector compilation.
(DEGREE)
SPIN POLE 3 LONGITUDE * Ecliptic longitude (equinox B1950.0) of the third spin vector solution in the asteroid spin vector compilation.
(DEGREE)
SPIN POLE 3 LATITUDE * Ecliptic latitude (equinox B1950.0) of the third spin vector solution in the asteroid spin vector compilation.
(DEGREE)
SPIN POLE 4 LONGITUDE * Ecliptic longitude (equinox B1950.0) of the fourth spin vector solution in the asteroid spin vector compilation.
(DEGREE)
SPIN POLE 4 LATITUDE * Ecliptic latitude (equinox B1950.0) of the fourth spin vector solution in the asteroid spin vector compilation.
(DEGREE)
SPIN SIDEREAL PERIOD * Sidereal period used in the asteroid spin vector compilation. Only periods accurate enough to bridge inter-apparitional gaps and produce absolute rotational phases for the whole data set are included. Less accurate synodic period determinations exist for many more objects. As evident from the table, the agreement between sidereal period determinations tend to be either very good or very bad. This is due to the non-uniform time-distribution of the observations, which tend to give many well-defined local chi-square minima.
(DAY)
SPIN ALBEDO FLAG * An X in this column marks the presence of albedo variegation for this asteroid in the asteroid spin vectors compilation. SPIN REFERENCE CODE * Reference code for the spin vector determination. The reference codes are formed by 2-3 letters of the first author name, followed by '+' if there are more authors, and the last two digits of the publication year. Full expansions of the codes are given in the accompanying reference table in the spin vectors compilation data set, spinrefs.tab. An entry of "Synth." means that this entry is a best value chosen by the authors of the compilation as a synthesis of the published values.
EAM 20 +22 198 +13 0.2934197 Mag+92
C 15 +16 Dav+92
EA 19 +20 0.2934194 DeA92
AMF 15 +24 Bar+92
C 19 +21 Da+94a
C 19 +21 Tho+94
EC 0.2934177 Sim+95
EA 19 +20 0.2934194 DeA95
L 20 +19 0.2934191 Ka+01
EAM 20 +26 0.2934170 Tun+02
19 +21 0.293419 Synth.

Asteroid 951 Gaspra (top)

Asteroid Taxonomy V6.0 (1 data product)

Asteroid 951 Gaspra (top)

Eight Color Asteroid Survey V4.0 (2 data products)

Asteroid 951 Gaspra (top)

Galileo SSI Ida/Gaspra Images V1.0 (57 data products)

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Asteroid 951 Gaspra (top)

Galileo SSI/Gaspra Radiometrically Calibrated Images V1.0 (85 data products)

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Asteroid 951 Gaspra (top)

Gaspra Galileo Magnetometer/Trajectory Data V1.0 (5 data products)

GALILEO MAG GASPRA BROWSE

time: 1991-10-29T06:03:20.834      file: browse.tab      dataset: Gaspra Galileo Magnetometer/Trajectory Data V1.0

Galileo magnetometer browse data for 951 Gaspra. See the document 'maggasbr.doc' for more details.

GALILEO MAG GASPRA CRUISE

time: 1991-09-10T01:24:08.435      file: cruise.tab      dataset: Gaspra Galileo Magnetometer/Trajectory Data V1.0

Galileo magnetometer cruise data for use with the 951 Gaspra data. This is a sample of cruise data around the time of Ida encounter, included to provide context for the encounter data.

GALILEO MAG GASPRA HRGEOPH

time: 1991-10-29T06:39:32.033      file: hrgeoph.tab      dataset: Gaspra Galileo Magnetometer/Trajectory Data V1.0

Galileo magnetometer high resolution data in body coordinates for 951 Gaspra. See the data set catalog file for additional information.

GALILEO MAG GASPRA HRSC

time: 1991-10-29T06:39:32.033      file: hrsc.tab      dataset: Gaspra Galileo Magnetometer/Trajectory Data V1.0

Galileo magnetometer high-resolution data in spacecraft coordinates for 951 Gaspra. See the document 'magidahr.doc' for further information.

GALILEO MAG GASPRA TRAJECTORY

time: 1991-10-29T00:00:00.000      file: traject.tab      dataset: Gaspra Galileo Magnetometer/Trajectory Data V1.0

Galileo magnetometer trajectory data for 951 Gaspra. See the document 'magidahr.doc' for further information.
Asteroid 951 Gaspra (top)

HiRes NIMS Gaspra Spectral Image Cube (1 data product)

thumbnail for gaspra_nims_hires_radiance.fit

GASPRA-HIRES-NIMS-RAD

time: 1991-10-29T22:20:56      file: gaspra_nims_hires_radiance.fit      dataset: HiRes NIMS Gaspra Spectral Image Cube

HEADER: FITS format defined in NASA/Science Office Standards Technology 100-1.0 EXTENSION_WAVELENGTH_HEADER: This extension contains the wavelength values, per pixel, for the image array. EXTENSION_ERROR_HEADER: This extension contains the radiance precision values, per pixel, for the image array.
Asteroid 951 Gaspra (top)

NIMS Radiance Point Spectra of Gaspra V1.0 (10 data products)

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GASPRA IR SPECTRUM

time: 1991-10-29T22:01:16      file: gap015iof.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap015iof.tab is a 329 channel incidence over flux spectrum at wavelengths ranging from 0.7 to 5.1 micrometers as observed by the Galileo spacecraft on 22:01:16 UT, October 29, 1991.
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GASPRA IR SPECTRUM

time: 1991-10-29T22:01:16      file: gap015radiance.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap015radiance.tab file contains a 329 channel of asteroid 951 Gaspra at wavelengths ranging from 0.7 to 5.1 micrometers that was acquired on 22:01:16 UT, October 29, 1991.
thumbnail for gap035iof.tab

GASPRA IR SPECTRUM

time: 1991-10-29T21:38:18      file: gap035iof.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap035iof.tab is a 17 channel incidence over flux spectrum at wavelengths ranging from 0.7 to 5.2 micrometers as observed by the Galileo spacecraft on 21:38:18 UT, October 29, 1991.
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GASPRA IR SPECTRUM

time: 1991-10-29T21:38:18      file: gap035radiance.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap035radiance.tab file contains a 17 channel of asteroid 951 Gaspra at wavelengths ranging from 0.7 to 5.2 micrometers that was acquired on 21:38:18 UT, October 29, 1991.
thumbnail for gap036iof.tab

GASPRA IR SPECTRUM

time: 1991-10-29T21:51:36      file: gap036iof.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap036iof.tab is a 17 channel incidence over flux spectrum at wavelengths ranging from 0.7 to 5.2 micrometers as observed by the Galileo spacecraft on 21:51:26 UT, October 29, 1991.
thumbnail for gap036radiance.tab

GASPRA IR SPECTRUM

time: 1991-10-29T21:51:36      file: gap036radiance.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap036radiance.tab file contains a 17 channel of asteroid 951 Gaspra at wavelengths ranging from 0.7 to 5.2 micrometers that was acquired on 21:51:36 UT, October 29, 1991.
thumbnail for gap037iof.tab

GASPRA IR SPECTRUM

time: 1991-10-29T21:54:29      file: gap037iof.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap037iof.tab is a 100 channel incidence over flux spectrum at wavelengths ranging from 0.7 to 5.1 micrometers as observed by the Galileo spacecraft on 21:54:29 UT, October 29, 1991.
thumbnail for gap037radiance.tab

GASPRA IR SPECTRUM

time: 1991-10-29T21:54:29      file: gap037radiance.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap037radiance.tab file contains a 100 channel of asteroid 951 Gaspra at wavelengths ranging from 0.7 to 5.1 micrometers that was acquired on 21:54:29 UT, October 29, 1991.
thumbnail for gap038iof.tab

GASPRA IR SPECTRUM

time: 1991-10-29T22:07:13      file: gap038iof.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap038iof.tab is a 100 channel incidence over flux spectrum at wavelengths ranging from 0.7 to 5.1 micrometers as observed by the Galileo spacecraft on 22:01:13 UT, October 29, 1991.
thumbnail for gap038radiance.tab

GASPRA IR SPECTRUM

time: 1991-10-29T22:07:13      file: gap038radiance.tab      dataset: NIMS Radiance Point Spectra of Gaspra V1.0

The gap038radiance.tab file contains a 100 channel of asteroid 951 Gaspra at wavelengths ranging from 0.7 to 5.1 micrometers that was acquired on 22:07:13 UT, October 29, 1991.
Asteroid 951 Gaspra (top)

Reddy Main Belt Asteroid Spectra V1.0 (1 data product)

thumbnail for 2006/951_gaspra.tab

NEAR-IR SPECTRUM OF ASTEROID 951 GASPRA

time: 2006-02-24T05:08:58      file: 2006/951_gaspra.tab      dataset: Reddy Main Belt Asteroid Spectra V1.0

NEAR-IR SPECTRUM OF ASTEROID 951 GASPRA
Asteroid 951 Gaspra (top)

SMASS Asteroid Survey V2.1 (1 data product)

thumbnail for spectra/951gaspra.tab

SMASS SPECTRUM: 951 GASPRA

time: 1990      file: spectra/951gaspra.tab      dataset: SMASS Asteroid Survey V2.1

This spectrum was extracted from the main data table in 'smass.tab'.
Asteroid 951 Gaspra (top)

Small Body Shape Models V2.1 (2 data products)

thumbnail for 951gaspram.fit

951 GASPRA IMAGE MOSAIC

time: 1991-10-29T14:33:45.592      file: 951gaspram.fit      dataset: Small Body Shape Models V2.1

Image mosaic of 951 Gaspra. This image mosaic is a high-pass filtered version constructed from Galileo SSI images in a simple cylindrical projection. The images used were the highest resolution pair, 107318313 and 107318326. The highest resolution on these images is approximately 55 m/pixel. Areas with poor or no coverage are left black. Resolution on original images varied greatly, so some regions of low intrinsic resolution are very oversampled in the resampled mosaic. The scale is 2 pixels/degree. The mosaic is centered on 0 latitude, 0 longitude, with longitude increasing to the west.

951 GASPRA SHAPE MODEL

time: 1991-10-29T14:33:45.592      file: 951gaspra.tab      dataset: Small Body Shape Models V2.1

Numerical shape model of asteroid 951 Gaspra, constructed from Galileo images of Gaspra taken October 29, 1991, using stereogrammetry and limb matching techniques. For further information see [THOMASETAL1994]. (Thomas et al. 1994, Icarus 107, 25.) This shape model consists of a grid with points every 2 degrees in latitude and longitude, with a radius in km associated with each point. Coordinates are planetocentric. For information on Gaspra's rotational state, see Davies, et al. (1994). Spin pole RA= 9.5 +/- 0.9, Dec = 26.7 +/- 1.2 (degrees) J2000; rotation period = 0.2934197 days. Prime meridian: W = 83.67 + 1226.9114850 d in degrees, where d is the number of days from the standard epoch (JD 2451545.0).
Asteroid 951 Gaspra (top)

Small Main-belt Asteroid Spectroscopic Survey, Phase II (1 data product)

thumbnail for data27/951_01.tab

951 GASPRA CCD SPECTRUM

time: 1997-01-19T11:57:45      file: data27/951_01.tab      dataset: Small Main-belt Asteroid Spectroscopic Survey, Phase II

Individual asteroid spectrum obtained during the Phase II Small Main-Belt Asteroid Spectroscopic Survey with the MDM telescopes at Kitt Peak National Observatory.
Asteroid 951 Gaspra (top)

Stooke Small Bodies Maps V3.0 (3 data products)

STOOKEMAPS FILENAME * The name of the file containing the map described by this entry. These files, which are jpg images of the map sheets, are located in the document directory of the Stooke Small Bodies Maps data set. STOOKEMAPS SOURCE FLAG * The type of image which forms the basis of this map in the Stooke Small Bodies Maps collection, as follows: P - photomosaic S - shaded relief Photomosaic maps are reprojections of photomosaics assembled from spacecraft images of the mapped body. Shaded relief maps are reproductions from airbrushed maps intended to show the topography. STOOKEMAPS MAP PROJECTION * Map projection used to create this map in the Stooke Small Bodies Maps collection. A description of the various map projections used can be found in the published papers cited in the data set catalog, and is also summarized in the file 'projections.asc' in the document directory of the data set. STOOKEMAPS GRID FLAG * Flag indicating whether the map is gridded or ungridded. G = gridded, U = ungridded. STOOKEMAPS SERIES INDICATOR * For maps in the Stooke Small Bodies Maps collection, if the map sheet is part of a multi-sheet map, this indicates the sheet number within the series, or in the case of pairs of maps representing the northern and southern hemisphere of a body, N or S indicate the north or south member of the pair. Maps which are not part of a series recieve the indicator '-'. Note that the complete series is not always available due to limited image coverage of the body. E.g. for the Mathilde azimuthal equidistant photomosaic set, the entire body would be covered by 14 sheets, of which only sheets 3-6 were prepared. STOOKEMAPS SOURCE MISSION * The spacecraft mission which was the source of the images used in preparing this map in the Stooke Small Bodies Maps collection. Abbreviations: NEAR - Near Earth Asteroid Rendezvous, VO - Viking Orbiter, MGS - Mars Global Surveyor, ME - Mars Express, MRO - Mars Reconnaissance Orbiter
951gaspra/gq1edis.jpg P azimuthal equidistant U 1 Galileo
951gaspra/gq2edis.jpg P azimuthal equidistant U 2 Galileo
951gaspra/gq3edis.jpg P azimuthal equidistant U 3 Galileo
951gaspra/gq4edis.jpg P azimuthal equidistant U 4 Galileo
951gaspra/gq5edis.jpg P azimuthal equidistant U 5 Galileo
951gaspra/gq6edis.jpg P azimuthal equidistant U 6 Galileo
951gaspra/gq7edis.jpg P azimuthal equidistant U 7 Galileo
951gaspra/gq8edis.jpg P azimuthal equidistant U 8 Galileo
951gaspra/gq9edis.jpg P azimuthal equidistant U 9 Galileo
951gaspra/gq10edis.jpg P azimuthal equidistant U 10 Galileo
951gaspra/gq11edis.jpg P azimuthal equidistant U 11 Galileo
951gaspra/gq12edis.jpg P azimuthal equidistant U 12 Galileo
951gaspra/gq13edis.jpg P azimuthal equidistant U 13 Galileo
951gaspra/gq14edis.jpg P azimuthal equidistant U 14 Galileo
951gaspra/g15.jpg P azimuthal equidistant U 15 Galileo
951gaspra/gq1gedis.jpg P azimuthal equidistant G 1 Galileo
951gaspra/gq2gedis.jpg P azimuthal equidistant G 2 Galileo
951gaspra/gq3gedis.jpg P azimuthal equidistant G 3 Galileo
951gaspra/gq4gedis.jpg P azimuthal equidistant G 4 Galileo
951gaspra/gq5gedis.jpg P azimuthal equidistant G 5 Galileo
951gaspra/gq6gedis.jpg P azimuthal equidistant G 6 Galileo
951gaspra/gq7gedis.jpg P azimuthal equidistant G 7 Galileo
951gaspra/gq8gedis.jpg P azimuthal equidistant G 8 Galileo
951gaspra/gq9gedis.jpg P azimuthal equidistant G 9 Galileo
951gaspra/gq10gedi.jpg P azimuthal equidistant G 10 Galileo
951gaspra/gq11gedi.jpg P azimuthal equidistant G 11 Galileo
951gaspra/gq12gedi.jpg P azimuthal equidistant G 12 Galileo
951gaspra/gq13gedi.jpg P azimuthal equidistant G 13 Galileo
951gaspra/gq14gedi.jpg P azimuthal equidistant G 14 Galileo
951gaspra/g15g.jpg P azimuthal equidistant G 15 Galileo
951gaspra/gagoresn.jpg P (globe gores) G N Galileo
951gaspra/gagoress.jpg P (globe gores) G S Galileo
951gaspra/gascylmo.jpg P simple cylindrical U Galileo
951gaspra/gacymogr.jpg P simple cylindrical G Galileo
951gaspra/gabestmo.jpg P simple cylindrical U Galileo
951gaspra/gasnormo.jpg P azimuthal equidistant U N Galileo
951gaspra/gassoumo.jpg P azimuthal equidistant U S Galileo
951gaspra/gaspolmo.jpg P azimuthal equidistant U Galileo
951gaspra/ganheqar.jpg P morphographic (equal area) U Galileo
951gaspra/ganhedis.jpg P morphographic (equidistant) U Galileo
951gaspra/ganhster.jpg P morphographic (conformal) U Galileo
951gaspra/ganheqgr.jpg P morphographic (equal area) G Galileo
951gaspra/ganhedgr.jpg P morphographic (equidistant) G Galileo
951gaspra/ganhstgr.jpg P morphographic (conformal) G Galileo
951gaspra/garelcyl.jpg S simple cylindrical U Galileo
951gaspra/garecylg.jpg S simple cylindrical G Galileo
951gaspra/gasrelnp.jpg S azimuthal equidistant U N Galileo
951gaspra/gasrelsp.jpg S azimuthal equidistant U S Galileo
951gaspra/gaspolre.jpg S azimuthal equidistant U Galileo
951gaspra/ga90rel.jpg S morphographic conformal U 1 Galileo
951gaspra/ga270rel.jpg S morphographic conformal U 2 Galileo

INDEX TO STOOKE SMALL BODIES MAPS

time:      file: mapindex.tab      dataset: Stooke Small Bodies Maps V3.0

This index lists the type, projection, target body, source mission, and other relevant parameters describing the maps of small solar system bodies prepared by Phil Stooke of the University of Western Ontario. The map sheets themselves are provided in the document directory in the form of jpeg files along with an html map guide called 00_map_guide.html.
Asteroid 951 Gaspra (top)

Stooke Small Body Shape Models V2.0 (1 data product)

951 GASPRA SHAPE

time:      file: 951gaspra.tab      dataset: Stooke Small Body Shape Models V2.0

Numerical shape model of 951 Gaspra, based on data from the Galileo mission. Coordinates are planetocentric, increasing to the west for planetary satellites, and to the east for (prograde) asteroids and comets, as recommended by the IAU Working Group on Cartographic Coordinates. See the data set description for details on the coordinate system. This model is similar to that by [THOMASETAL1994] (Icarus 107, 23) but includes a correction to accommodate light curve studies by [SIMONELLIETAL1995] (Icarus 114, 387). It is described in [STOOKE1997], 'The Surface of Asteroid 951 Gaspra', Earth, Moon and Planets, v. 75, pp. 53-75. This shape model consists of a grid with points every 5 degrees in latitude and longitude, with a radius in km associated with each point. The model is planetocentric.

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