II/389 The Pan-STARRS release 1 (PS1) Survey - DR2 (Magnier+, 2025)
Pan-STARRS Photometric and Astrometric Calibration.
Magnier E.A., Schlafly E.F., Finkbeiner D.P., Tonry J.L., Goldman B.,
Roser S., Schilbach E., Casertano S., Chambers K.C., Flewelling H. A.,
Huber M.E., Price P.A., Sweeney W.E., Waters C. Z., Denneau L.,
Draper P.W., Hodapp K.W., Jedicke R., Kaiser N., Kudritzki R.-P.,
Metcalfe N., Stubbs C.W., Wainscoat R.J.
<Astrophys. J., Suppl. Ser., 251, 6 (2020); 251, 3 (2020); 251, 4 (2020);
251, 5 (2020); 251, 7 (2020)>
=2020ApJS..251....6M 2020ApJS..251....6M
+2020ApJS..251....3M 2020ApJS..251....3M
+2020ApJS..251....4W 2020ApJS..251....4W
+2020ApJS..251....5M 2020ApJS..251....5M
+2020ApJS..251....7F 2020ApJS..251....7F
+2016arXiv161205560C 2016arXiv161205560C
=2025yCat.2389....0M 2025yCat.2389....0M
ADC_Keywords: Photometry, ugriz ; Surveys ; Positional data
Mission_Name: Pan-STARRS
Keywords: catalogs; surveys
Description:
The Panoramic Survey Telescope and Rapid Response System (Pan-STARRS)
is a system for wide-field astronomical imaging developed and operated
by the Institute for Astronomy at the University of Hawaii.
Pan-STARRS1 (PS1) is the first part of Pan-STARRS to be completed.
The PS1 survey used a 1.8m telescope and its 1.4 Gigapixel camera
(GPC1) to image the sky in five broadband filters (g, r, i, z, y). PS1
took approximately 370000 exposures from 2010 to 2015.
The PS1 camera surveyed the sky using 5 filters: g, r, i, z, and y.
The effective wavelengths (and spectral resolutions) of these 5
filters are 481nm (R=3.5), 617nm (R=4.4), 752nm (R=5.8), 866nm
(R=8.3), and 962nm (R=11.6), respectively. Please refer to Table 4 in
Tonry+ (2012, J/ApJ/750/99) for bandpass details.
Schlafly+ (2012ApJ...756..158S 2012ApJ...756..158S) provides updated zeropoints in Table 1.
Data for this catalog has been retrieved from STScI and was built from
MeanObject and ObjectThin tables with nDetections>2.
All data from DR1 are available in DR2 as well. DR2, was made
available on 2019 January 28.
PS1 DR2 caveats:
http://outerspace.stsci.edu/display/PANSTARRS/PS1+DR2+caveats
Acknowledging Pan-STARRS1 in publications:
The Pan-STARRS1 Surveys were made possible through contributions by
the Institute for Astronomy, the University of Hawaii, the Pan-STARRS
Project Office, the Max-Planck Society and its participating
institutes, the Max Planck Institute for Astronomy, Heidelberg and the
Max Planck Institute for Extraterrestrial Physics, Garching, The Johns
Hopkins University, Durham University, the University of Edinburgh,
the Queen's University Belfast, the Harvard-Smithsonian Center for
Astrophysics, the Las Cumbres Observatory Global Telescope Network
Incorporated, the National Central University of Taiwan, the Space
Telescope Science Institute, and the National Aeronautics and Space
Administration under Grant No. NNX08AR22G issued through the Planetary
Science Division of the NASA Science Mission Directorate, the National
Science Foundation Grant No. AST-1238877, the University of Maryland,
Eotvos Lorand University (ELTE), and the Los Alamos National
Laboratory.The Pan-STARRS1 Surveys are archived at the Space Telescope
Science Institute (STScI) and can be accessed through MAST, the
Mikulski Archive for Space Telescopes. Additional support for the
Pan-STARRS1 public science archive is provided by the Gordon and Betty
Moore Foundation.
In addition, please cite the following papers describing the
instrument, survey, and data analysis as appropriate:
The Pan-STARRS1 Surveys, Chambers, K.C., et al. 2016, arXiv:1612.05560
Pan-STARRS Data Processing System,
Magnier, E. A., et al. 2016, arXiv:1612.05240 (2020ApJS..251....3M 2020ApJS..251....3M)
Pan-STARRS Pixel Processing: Detrending, Warping, Stacking,
Waters, C. Z., et al. 2016, arXiv:1612.05245 (2020ApJS..251....4W 2020ApJS..251....4W)
Pan-STARRS Pixel Analysis: Source Detection and Characterization,
Magnier, E. A., et al. 2016, arXiv:1612.05244 (2020ApJS..251....5M 2020ApJS..251....5M)
Pan-STARRS Photometric and Astrometric Calibration,
Magnier, E. A., et al. 2016, arXiv:1612.05242 (2020ApJS..251....6M 2020ApJS..251....6M)
The Pan-STARRS1 Database and Data Products,
Flewelling, H. A., et al. 2016, arXiv:1612.05243 (2020ApJS..251....7F 2020ApJS..251....7F)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ps1_dr2.sam 528 1000 Pan-STARRS DR2 catalog, sample output
(on a total of 1,868,236,315 sources)
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See also:
II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)
http://panstarrs.stsci.edu/ : The Pan-STARRS1 data archive home page
Byte-by-byte Description of file: ps1_dr2.sam
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 I18 --- objID [66842148753827683/215993386231483716] Unique
object identifier
20- 34 F15.11 deg RAdeg Right ascension (J2000) (weighted mean) at
epoch "Epoch" (raMean) (1)
36- 50 F15.11 deg DEdeg [-34.3/90] Declination (J2000) (weighted mean)
at epoch "Epoch" (decMean) (1)
52- 55 I4 --- cell [604/2643] Projection cell identifier
(projectionID)
57- 58 I2 --- sky [0/99] Skycell region identifier (skyCellID)
60- 69 I10 --- f_objID [134295552/2005196800] Information flag
bitmask indicating details of the photometry
(objInfoFlag) (2)
71- 73 I3 --- Qual [16/239] Subset of objInfoFlag denoting
whether this object is real or a likely false
positive (qualityFlag) (3)
75- 93 F19.11 deg e_RAdeg [0/3395220]? Right ascension standard
deviation from single epoch detections
(raMeanErr)
95- 112 F18.11 deg e_DEdeg [0/901152]? Declination standard deviation
from single epoch detections (decMeanErr)
114- 128 F15.9 d Epoch [49518.5/57078.5]? Modified Julian Date (MJD)
of the mean epoch (epochMean)
130- 131 I2 --- Ns [0/50] Number of stack detections
(nStackDetections)
133- 135 I3 --- Nd [3/369] Number of single epoch detections in
all filters (nDetections)
137- 138 I2 --- Ng [0/52] Number of single epoch detections in g
filter (ng)
140- 142 I3 --- Nr [0/368] Number of single epoch detections in r
filter (nr)
144- 145 I2 --- Ni [0/88] Number of single epoch detections in i
filter (ni)
147- 148 I2 --- Nz [0/44] Number of single epoch detections in z
filter (nz)
150- 151 I2 --- Ny [0/53] Number of single epoch detections in y
filter (ny)
153- 160 F8.6 --- gPSFf [0/1]? Maximum PSF weighted fraction of pixels
totally unmasked from g filter detections
(gQfPerfect)
162- 169 F8.4 mag gmag [-31.7/32.6]? Mean PSF AB magnitude from g
(4866Å) filter detections (gMeanPSFMag)
171- 176 F6.4 mag e_gmag [0/0.5]? Error in gmag (gMeanPSFMagErr)
178- 184 F7.4 mag gmagStd [0/26]? Standard deviation of PSF AB
magnitudes from g filter detections
(gMeanPSFMagStd)
186- 187 I2 --- o_gmag [0/49] Number of measurements included in mean
PSF magnitude from g filter detections
(gMeanPSFMagNpt)
189- 195 F7.4 mag b_gmag [-5.1/29.6]? Minimum PSF AB magnitude from g
filter detections (gMeanPSFMagMin)
197- 203 F7.4 mag B_gmag [-5.1/29.6]? Maximum PSF AB magnitude from g
filter detections (gMeanPSFMagMax)
205- 211 F7.4 mag gKmag [-1.5/26.5]? Mean Kron (1980) AB magnitude
from g filter detections (gMeanKronMag)
213- 218 F6.4 mag e_gKmag [0/0.4]? Error in gKmag (gMeanKronMagErr)
220- 227 I8 --- gFlags [0/17027192] Information flag bitmask for mean
object from g filter detections (gFlags) (4)
229- 236 F8.6 --- rPSFf ? Maximum PSF weighted fraction of pixels
totally unmasked from r filter detections
(rQfPerfect)
238- 244 F7.4 mag rmag [-5.2/29.2]? Mean PSF AB magnitude from r
filter (6215A) detections (rMeanPSFMag)
246- 251 F6.4 mag e_rmag [0/0.5]? Error in rmag (rMeanPSFMagErr)
253- 259 F7.4 mag rmagStd [0/22.1]? Standard deviation of PSF AB
magnitudes from r filter detections
(rMeanPSFMagStd)
261- 263 I3 --- o_rmag [0/179] Number of measurements included in
mean PSF magnitude from r filter detections
(rMeanPSFMagNpt)
265- 271 F7.4 mag b_rmag ? Minimum PSF AB magnitude from r filter
detections (rMeanPSFMagMin)
273- 279 F7.4 mag B_rmag ? Maximum PSF AB magnitude from r filter
detections (rMeanPSFMagMax)
281- 287 F7.4 mag rKmag [2.9/26.2]? Mean Kron (1980) AB magnitude from
r filter detections (rMeanKronMag)
289- 294 F6.4 mag e_rKmag [0/0.4]? Error in rKmag (rMeanKronMagErr)
296- 303 I8 --- rFlags [0/17027192] Information flag bitmask for mean
object from r filter detections (rFlags) (4)
305- 312 F8.6 --- iPSFf ? Maximum PSF weighted fraction of pixels
totally unmasked from i filter detections
(iQfPerfect)
314- 320 F7.4 mag imag [-4.9/29.2]? Mean PSF AB magnitude from i
filter (7545A) detections (iMeanPSFMag)
322- 327 F6.4 mag e_imag [0/0.5]? Error in imag (iMeanPSFMagErr)
329- 335 F7.4 mag imagStd [0/18]? Standard deviation of PSF AB
magnitudes from i filter detections
(iMeanPSFMagStd)
337- 338 I2 --- o_imag [0/85] Number of measurements included in mean
PSF magnitude from i filter detections
(iMeanPSFMagNpt)
340- 346 F7.4 mag b_imag ? Minimum PSF AB magnitude from i filter
detections (iMeanPSFMagMin)
348- 354 F7.4 mag B_imag ? Maximum PSF AB magnitude from i filter
detections (iMeanPSFMagMax)
356- 362 F7.4 mag iKmag [4.3/27]? Mean Kron (1980) AB magnitude from i
filter detections (iMeanKronMag)
364- 369 F6.4 mag e_iKmag [0/0.4]? Error in iKmag (iMeanKronMagErr)
371- 378 I8 --- iFlags [0/17027192] Information flag bitmask for mean
object from i filter detections (iFlags) (4)
380- 387 F8.6 --- zPSFf ? Maximum PSF weighted fraction of pixels
totally unmasked from z filter detections
(zQfPerfect)
389- 395 F7.4 mag zmag [-4.7/28.7]? Mean PSF AB magnitude from z
filter (8679A) detections (zMeanPSFMag)
397- 402 F6.4 mag e_zmag [0/0.5]? Error in zmag (zMeanPSFMagErr)
404- 410 F7.4 mag zmagStd ? Standard deviation of PSF AB magnitudes from
z filter detections (zMeanPSFMagStd)
412- 413 I2 --- o_zmag [0/37] Number of measurements included in mean
PSF magnitude from z filter detections
(zMeanPSFMagNpt)
415- 421 F7.4 mag b_zmag ? Minimum PSF AB magnitude from z filter
detections (zMeanPSFMagMin)
423- 429 F7.4 mag B_zmag ? Maximum PSF AB magnitude from z filter
detections (zMeanPSFMagMax)
431- 437 F7.4 mag zKmag [-1.3/25.1]? Mean Kron (1980) AB magnitude
from z filter detections (zMeanKronMag)
439- 444 F6.4 mag e_zKmag [0/0.4]? Error in zKmag (zMeanKronMagErr)
446- 453 I8 --- zFlags [0/17027192] Information flag bitmask for mean
object from z filter detections (zFlags) (4)
455- 462 F8.6 --- yPSFf ? Maximum PSF weighted fraction of pixels
totally unmasked from y filter detections
(yQfPerfect)
464- 470 F7.4 mag ymag [-5/28.1]? Mean PSF AB magnitude from y filter
(9633A) detections (yMeanPSFMag)
472- 477 F6.4 mag e_ymag [0/0.5]? Error in ymag (yMeanPSFMagErr)
479- 485 F7.4 mag ymagStd [0/19]? Standard deviation of PSF AB
magnitudes from y filter detections
(yMeanPSFMagStd)
487- 488 I2 --- o_ymag [0/51] Number of measurements included in mean
PSF magnitude from y filter detections
(yMeanPSFMagNpt)
490- 496 F7.4 mag b_ymag ? Minimum PSF AB magnitude from y filter
detections (yMeanPSFMagMin)
498- 504 F7.4 mag B_ymag ? Maximum PSF AB magnitude from y filter
detections (yMeanPSFMagMax)
506- 512 F7.4 mag yKmag [-2.6/24]? Mean Kron (1980) AB magnitude from
y filter detections (yMeanKronMag)
514- 519 F6.4 mag e_yKmag [0/0.4]? Error in yKmag (yMeanKronMagErr)
521- 528 I8 --- yFlags [0/17027192] Information flag bitmask for mean
object from y filter detections (yFlags) (4)
--------------------------------------------------------------------------------
Note (1): Coordinates from single epoch detections (weighted mean) in equinox
J2000 at the mean epoch given by epochMean ("Epoch" column).
Note (2): objInfoFlag from ObjectInfoFlags table:
1 = Used within relphot (FEW); skip star.
2 = Used within relphot (POOR); skip star.
4 = object IDed with known ICRF quasar (may have ICRF position
measurement)
8 = identified as likely QSO (Hernitschek+ 2015ApJ...801...45H 2015ApJ...801...45H),
PQSO≥0.60
16 = identified as possible QSO (Hernitschek+ 2015ApJ...801...45H 2015ApJ...801...45H),
PQSO≥0.05
32 = identified as likely RR Lyra (Hernitschek+ 2015ApJ...801...45H 2015ApJ...801...45H),
PRRLyra≥0.60
64 = identified as possible RR Lyra (Hernitschek+ 2015ApJ...801...45H 2015ApJ...801...45H),
PRRLyra≥0.05
128 = identified as a variable based on ChiSq
(Hernitschek+ 2015ApJ...801...45H 2015ApJ...801...45H)
256 = identified as a non-periodic (stationary) transient
512 = at least one detection identified with a known solar-system object
(asteroid or other).
1024 = most detections identified with a known solar-system object
(asteroid or other).
2048 = star with large proper motion
4096 = simple weighted average position was used (no IRLS fitting)
8192 = average position was fitted
16384 = proper motion model was fitted
32768 = parallax model was fitted
65536 = average position used (not PM or PAR)
131072 = proper motion used (not AVE or PAR)
262144 = parallax used (not AVE or PM)
524288 = mean astrometry could not be measured
1048576 = stack position used for mean astrometry
2097152 = mean astrometry used for stack position
4194304 = failure to measure proper-motion model
8388608 = extended in our data (eg, PS)
16777216 = extended in external data (eg, 2MASS)
33554432 = good-quality measurement in our data (eg,PS)
67108864 = good-quality measurement in external data (eg, 2MASS)
134217728 = good-quality object in the stack (>1 good stack measurement)
268435456 = the primary stack measurements are the best measurements
536870912 = suspect object in the stack (no more than 1 good measurement,
2 or more suspect or good stack measurement)
1073741824 = poor-quality stack object (no more than 1 good or suspect
measurement)
Note (3): Quality flags from ObjectQualityFlags:
1 = Extended in our data (eg, PS)
2 = Extended in external data (eg, 2MASS)
4 = Good-quality measurement in our data (eg,PS)
8 = Good-quality measurement in external data (eg, 2MASS)
16 = good-quality object in the stack (>1 good stack measurement)
32 = the primary stack measurements are the best measurements
64 = suspect object in the stack (no more than 1 good measurement,
2 or more suspect or good stack measurement)
128 = poor-quality stack object (no more than 1 good or suspect measurement)
Note (4): Flag values from ObjectFilterFlags table:
1 = Used within relphot (SECFSTARFEW): skip star.
2 = Used within relphot (SECFSTARPOOR): skip star.
4 = Synthetic photometry used in average measurement.
8 = Ubercal photometry used in average measurement.
16 = PS1 photometry used in average measurement.
32 = PS1 stack photometry exists.
64 = Tycho photometry used for synthetic magnitudes.
128 = Synthetic magnitudes repaired with zeropoint map.
256 = Average magnitude calculated in 0th pass.
512 = Average magnitude calculated in 1th pass.
1024 = Average magnitude calculated in 2th pass.
2048 = Average magnitude calculated in 3th pass.
4096 = Average magnitude calculated in 4th pass.
8192 = Extended in this band (PSPS only).
16384 = PS1 stack photometry comes from primary skycell.
32768 = PS1 stack best measurement (SECFSTACKBESTDET) is a detection
(not forced).
65536 = PS1 stack primary measurement (SECFSTACKPRIMDET) is a detection
(not forced).
1048576 = This photcode has SDSS photometry.
2097152 = This photcode has HSC photometry.
4194304 = This photcode has CFH photometry (mostly Megacam).
8388608 = This photcode has DES photometry.
16777216 = Extended in this band.
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History:
From https://outerspace.stsci.edu/display/PANSTARRS/
(End) F.-X. Pineau, G. Monari & E. Perret [CDS] 24-Jun-2025