The starting point for the PS1 data archive is at Pan-STARRS1 data archive home page.
Description: Contains the positional information for objects in a number of coordinate systems. The objects associate single epoch detections and the stacked detections within a one arcsecond radius. The mean position from the single epoch data is used as the basis for coordinates when available, or the position of an object in the stack when it is not. The right ascension and declination for both the stack and single epoch mean is provided. The number of detections in each filter from single epoch data is listed, along with which filters the object has a stack detection. References: Szalay, A. S., Gray, J., Fekete, G., et al. 2007, arXiv:cs/0701164. Note that as of June 2022 the raMean and decMean positions have been updated using Gaia EDR3 and new columns have been added with proper motions for a subset of objects. See the PS1 Astrometry Correction Using Gaia EDR3 for more information.Name Unit Data Type Size Default Value Description objName dimensionless VARCHAR(32) 32 NA IAU name for this object. objPSOName dimensionless VARCHAR(32) 32 NA Alternate Pan-STARRS name for this object. objAltName1 dimensionless VARCHAR(32) 32 NA Alternate name for this object. objAltName2 dimensionless VARCHAR(32) 32 Altername name for this object. objAltName3 dimensionless VARCHAR(32) 32 Altername name for this object. objPopularName dimensionless VARCHAR(140) 140 Well known name for this object. objID dimensionless BIGINT 8 NA Unique object identifier. uniquePspsOBid dimensionless BIGINT 8 NA Unique internal PSPS object identifier. ippObjID dimensionless BIGINT 8 NA IPP internal object identifier. surveyID dimensionless TINYINT 1 NA Survey identifier. Details in the Survey table. htmID dimensionless BIGINT 8 NA Hierarchical triangular mesh (Szalay 2007) index. zoneID dimensionless INT 4 NA Local zone index, found by dividing the sky into bands of declination 1/2 arcminute in height: zoneID = floor((90 + declination)/0.0083333). tessID dimensionless TINYINT 1 0 Tessellation identifier. Details in the TessellationType table. projectionID dimensionless SMALLINT 2 -1 Projection cell identifier. skyCellID dimensionless TINYINT 1 255 Skycell region identifier. randomID dimensionless FLOAT 8 NA Random value drawn from the interval between zero and one. batchID dimensionless BIGINT 8 NA Internal database batch identifier. dvoRegionID dimensionless INT 4 -1 Internal DVO region identifier. processingVersion dimensionless TINYINT 1 NA Data release version. objInfoFlag dimensionless INT 4 0 Information flag bitmask indicating details of the photometry. Values listed in ObjectInfoFlags and here astrometryCorrectionFlag dimensionless INT 4 0 Information flag bitmask indicating details of the astrometry correction. Values listed in AstrometryCorrectionFlags and here qualityFlag dimensionless TINYINT 1 0 Subset of objInfoFlag denoting whether this object is real or a likely false positive. Values listed in ObjectQualityFlags and here raStack degrees FLOAT 8 -999 Right ascension from stack detections, weighted mean value across filters, in equinox J2000. See StackObjectThin for stack epoch information. decStack degrees FLOAT 8 -999 Declination from stack detections, weighted mean value across filters, in equinox J2000. See StackObjectThin for stack epoch information. raStackErr arcsec REAL 4 -999 Right ascension standard deviation from stack detections. decStackErr arcsec REAL 4 -999 Declination standard deviation from stack detections. raMean degrees FLOAT 8 -999 Right ascension from single epoch detections (weighted mean) in equinox J2000 at the mean epoch given by epochMean. decMean degrees FLOAT 8 -999 Declination from single epoch detections (weighted mean) in equinox J2000 at the mean epoch given by epochMean. raMeanErr arcsec REAL 4 -999 Right ascension standard deviation from single epoch detections. decMeanErr arcsec REAL 4 -999 Declination standard deviation from single epoch detections. pmra milliarcseconds per year FLOAT 8 NULL Proper motion in right ascension direction from single epoch detections. pmdec milliarcseconds per year FLOAT 8 NULL Proper motion in right ascension direction from single epoch detections. pmraErr milliarcseconds per year FLOAT 8 NULL RA proper motion standard deviation. pmdecErr milliarcseconds per year FLOAT 8 NULL Dec proper motion standard deviation. epochMean days FLOAT 8 -999 Modified Julian Date of the mean epoch corresponding to raMean, decMean and pmra, pmdec (equinox J2000). This is a weighted mean of the PS1 observation epochs. posMeanChisq dimensionless REAL 4 -999 Reduced chi squared value of mean position. cx dimensionless FLOAT 8 NA Cartesian x on a unit sphere. cy dimensionless FLOAT 8 NA Cartesian y on a unit sphere. cz dimensionless FLOAT 8 NA Cartesian z on a unit sphere. lambda degrees FLOAT 8 -999 Ecliptic longitude. beta degrees FLOAT 8 -999 Ecliptic latitude. l degrees FLOAT 8 -999 Galactic longitude. b degrees FLOAT 8 -999 Galactic latitude. nStackObjectRows dimensionless SMALLINT 2 -999 Number of independent StackObjectThin rows associated with this object. nStackDetections dimensionless SMALLINT 2 -999 Number of stack detections. nDetections dimensionless SMALLINT 2 -999 Number of single epoch detections in all filters. ng dimensionless SMALLINT 2 -999 Number of single epoch detections in g filter. nr dimensionless SMALLINT 2 -999 Number of single epoch detections in r filter. ni dimensionless SMALLINT 2 -999 Number of single epoch detections in i filter. nz dimensionless SMALLINT 2 -999 Number of single epoch detections in z filter. ny dimensionless SMALLINT 2 -999 Number of single epoch detections in y filter.
