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Asteroid 25 Phocaea

Alternate IDs:
1956 GC
Asteroid 25 Phocaea (top)

24-Color Asteroid Survey (1 data product)

thumbnail for data3/25phocaea.tab

25PHOCAEA

time: N/A      file: data3/25phocaea.tab      dataset: 24-Color Asteroid Survey

This file contains the spectrum of the asteroid specified in TARGET NAME, as part of the 24-color Asteroid Survey.
Asteroid 25 Phocaea (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)
11.377 0.019 10.946 0.026 10.881 0.021

Asteroid 25 Phocaea (top)

52-Color Asteroid Survey (1 data product)

thumbnail for data1/25phocaea.tab

25PHOCAEA

time: N/A      file: data1/25phocaea.tab      dataset: 52-Color Asteroid Survey

This table contains a 52-color IR spectrum of the asteroid specified in TARGET_NAME.
Asteroid 25 Phocaea (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 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. - 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.
> 0.16 . Van Houten-Groeneveld 1958
. I Masiero 2012
. I AKARI
9.945 0.18 3 Groeneveld 1954a
. N Veres 2015
9.935 0.001 0.11 0.02 2 Pilcher 2009g
9.927 0.003 0.06 0.01 3 1 Pilcher 2009g
9.95 0.01 0.04 0.01 2 Behrend 2006web
9.9341 0.0002 0.25 0.02 3 Pilcher 2011e
. Lim 2005
. Bianchi 1921
9.945 0.002 0.03 0.01 2 Buchheim 2007b
. Marchis 2006c
. Hanus 2013a
. I SIMPS

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+ 9.9341 0.25
Hanus 2013a 9+ 347.0 10.0 9.93540

Asteroid 25 Phocaea (top)

Asteroid Names and Discovery V12.0 (1 data product)

Asteroid 25 Phocaea (top)

Asteroid Occultations V14.0 (1 data product)

OBSERVATION DATE * Date of observation OCC MAJOR AXIS * Major axis of best-fit ellipse derived from stellar occultation observations
(KILOMETER)
OCC MINOR AXIS * Minor axis of best-fit ellipse derived from stellar occultation observations
(KILOMETER)
OCC MAJOR AXIS POSITION ANGLE * Position angle of major axis of best-fit ellipse derived from stellar occultation observations
(DEGREE)
OCC FIT QUALITY CODE * Quality code for occultation fit: 0 - no fit, no position; 1 - no fit, but observations sufficiently reliable to derive an astrometric position of the asteroid relative to the star; 2 - poor fit; 3 - good fit; 4 - excellent fit OCC MAJOR AXIS UNC * Standard deviation of major axis of best-fit ellipse derived from stellar occultation observations
(KILOMETER)
OCC MINOR AXIS UNC * Standard deviation of minor axis of best-fit ellipse derived from stellar occultation observations
(KILOMETER)
OCC MAJOR AXIS POSITION ANGLE UNC * Standard deviation of position angle of major axis of best-fit ellipse derived from stellar occultation observations
(DEGREE)
1998-05-13 78.4 64.3 -11.9 2 5.1 9.6 24.6
2002-09-08 75.0 75.0 0.0 0 0.8 0.8 2.3
2002-10-03 75.0 75.0 0.0 1 0.8 0.8 2.3
2006-09-09 75.0 75.0 0.0 1
2006-09-23 75.0 75.0 0.0 0
2006-10-03 86.1 72.1 -25.3 3 1.0 1.0 3.8
2008-02-12 75.0 75.0 0.0 2
2009-04-05 75.0 75.0 0.0 1
2012-03-01 83.0 83.0 0.0 1
2012-04-16 92.0 66.4 -0.9 2 1.4 3.0
2013-03-17 83.0 83.0 0.0 0
2013-07-16 83.0 83.0 0.0 1

Asteroid 25 Phocaea (top)

Asteroid Photometric Catalog V1.1 (6 data products)

thumbnail for indiv/ast000025/19500805050213_v.tab

000025_19500805050213_V_TAB

time: 1950-08-05T05:02:13      file: indiv/ast000025/19500805050213_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/ast000025/19500805060000_v.tab

000025_19500805060000_V_TAB

time: 1950-08-05T06:00:00      file: indiv/ast000025/19500805060000_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/ast000025/19500805120159_v.tab

000025_19500805120159_V_TAB

time: 1950-08-05T12:01:59      file: indiv/ast000025/19500805120159_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/ast000025/19500806052613_v.tab

000025_19500806052613_V_TAB

time: 1950-08-06T05:26:13      file: indiv/ast000025/19500806052613_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/ast000025/19560103082102_v.tab

000025_19560103082102_V_TAB

time: 1956-01-03T08:21:02      file: indiv/ast000025/19560103082102_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/ast000025/19560104080437_v.tab

000025_19560104080437_V_TAB

time: 1956-01-04T08:04:37      file: indiv/ast000025/19560104080437_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.
Asteroid 25 Phocaea (top)

Asteroid Polarimetric Database V1.0 (1 data product)

APD Table

time: 1959-02-17Z      file: apd.csv      dataset: Asteroid Polarimetric Database V1.0

Asteroid Polarimetry Database
Asteroid 25 Phocaea (top)

Asteroid Polarimetric Database V8.0 (1 data product)

APD POLARIMETRY TABLE

time: 1958-10-22      file: apd.tab      dataset: Asteroid Polarimetric Database V8.0

This file contains the Asteroid Polarimetry Database (APD) compiled by D.F. Lupishko and S.V. Vasilyev of Karazin Kharkiv National University, Ukraine. It contains the majority of asteroid polarimetry published by Feb. 10, 2014. The APD includes data in the form of complete polarization curves (degree of polarization vs. phase angle) as well as the polarization and position angle reduced to the proper coordinate system, where available.
Asteroid 25 Phocaea (top)

Asteroid Taxonomy V6.0 (1 data product)

Asteroid 25 Phocaea (top)

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

Asteroid 25 Phocaea (top)

SMASS Asteroid Survey V2.1 (1 data product)

thumbnail for spectra/25phocaea.tab

SMASS SPECTRUM: 25 PHOCAEA

time: 1990      file: spectra/25phocaea.tab      dataset: SMASS Asteroid Survey V2.1

This spectrum was extracted from the main data table in 'smass.tab'.
Asteroid 25 Phocaea (top)

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

thumbnail for data10/25_01.tab

25 PHOCAEA CCD SPECTRUM

time: 1997-01-20T07:31:40      file: data10/25_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 25 Phocaea (top)

Small Solar System Objects Spectroscopic Survey V1.0 (1 data product)

thumbnail for n00001_n00164/00025_phocaea.tab

PHOCAEA CCD SPECTRUM

time: 1997-01-11T05:19      file: n00001_n00164/00025_phocaea.tab      dataset: Small Solar System Objects Spectroscopic Survey V1.0

Visible reflectance spectrum normalized at 5500 angstroms.

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