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V/147/sdss12

The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)

Data Release 12 (469,053,874 primary sources plus 324,960,094 secondary sources); 3,538,079 spectroscopic targets (original column names in green) (794013968 rows)

*Column*	*Value*		*Explain (UCD)*
_r	0.002	arcsec	Distance from center (037.201797+00.349597)[ICRS], at Epoch of catalog (ObsDate) (pos.angDistance) (POS_ANG_DIST_GENERAL)
_RAJ2000	02 28 48.43140	"h:m:s"	Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra) (POS_EQ_RA)
_DEJ2000	+00 20 58.5483	"d:m:s"	Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_RAB1950	02 26 14.51519	"h:m:s"	Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra) (POS_EQ_RA)
_DEB1950	+00 07 36.8368	"d:m:s"	Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_Glon	167.33430202	deg	Galactic longitude at Epoch=J0. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon) (POS_GAL_LON)
_Glat	-53.90779363	deg	Galactic latitude at Epoch=J0. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat) (POS_GAL_LAT)

ra	037.201797	deg	⁽ⁱ⁾ Right Ascension of the object (ICRS) at Epoch="ObsDate" (ra) (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN)
dec	+00.349597	deg	⁽ⁱ⁾ Declination of the object (ICRS) at Epoch="ObsDate" (dec) (pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN)
mode	2		[1/2] 1: primary (469,053,874 sources), 2: secondary (324,960,094 sources) (meta.code.class) (CLASS_CODE)
clean			[+] '+' indicates clean photometry (310,190,812 sources with mode 1+) (clean) (meta.code.qual;instr.setup) (CODE_QUALITY)
class	6		Type of object (3=galaxy, 6=star) (Note 1) (src.class) (CLASS_OBJECT)
SDSS12	J022848.43+002058.5		⁽ⁱ⁾ SDSS-DR12 name, based on J2000 position (meta.id) (ID_ALTERNATIVE)
m_SDSS12	*		[*] The asterisk indicates that 2 different SDSS objects share the same SDSS12 name (meta.code.multip) (CODE_MULT_INDEX)

DR12	Im		Image from SDSS-server (DR12) (meta.ref.url) (DATA_LINK)

SDSS-ID	4868-301-4-0456-0818		⁽ⁱ⁾ [0-9 -] SDSS object identifier (Note 2) (meta.id) (ID_ALTERNATIVE)
objID	1237666382674920242		⁽ⁱ⁾ SDSS unique object identifier (2) (links to SDSS-DR12 details) (Note) (meta.id;meta.main) (ID_MAIN)
Sp-ID			⁽ⁱ⁾ Spectroscopic Plate-MJD-Fiber identifier (7) (Note) (meta.id) (ID_ALTERNATIVE)
SpObjID	0		Pointer to the spectrum of object, or 0 (Note 7) (meta.id) (ID_ALTERNATIVE)
parentID	0		Pointer to parent (if object deblended) (meta.id.parent) (ID_PARENT)
flags	281543965671680		Photo Object Attribute flags (Note 3) (meta.code.error) (CODE_MISC)
Status	1025		Hexadecimal status (Note 4) (meta.code) (CODE_MISC)
raErr	0.095	arcsec	[0/51703] Mean error on RAdeg (raErr) (stat.error;pos.eq.ra) (ERROR)
decErr	0.090	arcsec	[0/20301] Mean error on DEdeg (decErr) (stat.error;pos.eq.dec) (ERROR)
ObsDate	2004.7705	yr	⁽ⁱ⁾ Mean Observation date (Note 6) (time.epoch;obs;stat.mean) (TIME_DATE)
Q	1		[1/3] Quality of the observation: 1=bad 2=acceptable 3=good (meta.code.qual;obs.param;obs) (CODE_QUALITY)
u	22.971	mag	⁽ⁱ⁾ [4/38] Model magnitude in u filter, AB scale (u) (Note 5) (phot.mag;em.opt.U) (PHOT_SDSS_U)
err_u	0.479	mag	Mean error on umag (err_u) (stat.error;phot.mag) (ERROR)
g	23.685	mag	⁽ⁱ⁾ [5/40] Model magnitude in g filter, AB scale (g) (Note 5) (phot.mag;em.opt.B) (PHOT_SDSS_G)
err_g	0.357	mag	Mean error on gmag (err_g) (stat.error;phot.mag) (ERROR)
r	22.349	mag	⁽ⁱ⁾ [4/39] Model magnitude in r filter, AB scale (r) (Note 5) (phot.mag;em.opt.R) (PHOT_SDSS_R)
err_r	0.150	mag	Mean error on rmag (err_r) (stat.error;phot.mag) (ERROR)
i	22.231	mag	⁽ⁱ⁾ [3/40] Model magnitude in i filter, AB scale (i) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_I)
err_i	0.176	mag	Mean error on imag (err_i) (stat.error;phot.mag) (ERROR)
z	21.443	mag	⁽ⁱ⁾ [3/38] Model magnitude in z filter, AB scale (z) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
err_z	0.365	mag	Mean error on zmag (err_z) (stat.error;phot.mag) (ERROR)
zsp			⁽ⁱ⁾ [-0.02/7.1] Spectroscopic redshift (when SpObjID>0) (Note 7) (src.redshift) (REDSHIFT_HC)
e_zsp			Mean error on zsp (negative for bad fit) (Note 7) (stat.error) (ERROR)
f_zsp			[0/196] "zwarning" flag (Note 9) (meta.code) (CODE_MISC)
velDisp		km/s	[0/850] Velocity dispersion (velDisp) (phys.veloc.dispersion) (VELOC_DISP)
velDispErr		km/s	Mean error on Vdisp (velDispErr) (stat.error) (ERROR)
instrument			Spectral instrument used (SDSS or BOSS) (instrument) (meta.id;instr) (INST_ID)
sourceType			Source type (sourceType) (10) (list of types) (Note) (src.class) (CLASS_OBJECT)
spCl			Spectroscopic class: GALAXY, QSO, STAR (meta.code.class;pos.parallax.spect) (CLASS_STAR/GALAXY)
subClass			Spectroscopic subclass (subClass) (Note 11) (src.spType) (SPECT_GENERAL)
snMedian			[0/132] Median signal-to-noise over all good pixels (snMedian) (em.wl.central;stat.median) (INST_S/N)
flags_u	134251777		Detection flags, u band (flags_u) (Note 3) (meta.code) (CODE_MISC)
probPSF_u	0		0=notStar, 1=Star in u band (probPSF_u) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_u	3		[0/6] Phototype in u band, 6=Star (type_u) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
uDate	2004.7705	yr	Date of observation in u band (Note 6) (time.epoch) (TIME_DATE)
u'mag	22.971	mag	[4/38] Model magnitude in u' filter (= umag) (Note 5) (phot.mag;em.opt.U) (PHOT_SDSS_U)
e_u'mag	0.479	mag	Mean error on u'mag (= e_umag) (stat.error;phot.mag) (ERROR)
psfMag_u	22.902	mag	[5/34] PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U) (PHOT_SDSS_U)
psfMagErr_u	0.444	mag	Mean error on upmag (psfMagErr_u) (stat.error;phot.mag) (ERROR)
petroMag_u	22.771	mag	[3/43] Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U) (PHOT_SDSS_U)
petroMagErr_u	0.722	mag	Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag) (ERROR)
petroRad_u	7.359	arcsec	[0/260] Petrosian radius in u band (petroRad_u) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_u		arcsec	Mean error in uPrad (petroRadErr_u) (stat.error) (ERROR)
offsetRa_u	0.02	arcsec	Offset of u position along RA (offsetRa_u) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_u	-0.00	arcsec	Offset of u position along Dec (offsetDec_u) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_u	29.667	arcsec	de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src) (EXTENSION_RAD)
udVell	0.050	arcsec	de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_u	66.5	deg	Position angle of dVrad in u band (deVPhi_u) (pos.posAng) (POS_POS-ANG)
flags_g	142606593		Detection flags, g band (flags_g) (Note 3) (meta.code) (CODE_MISC)
probPSF_g	1		0=notStar, 1=Star in g band (probPSF_g) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_g	6		Phototype in g band, 6=Star (type_g) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
gDate	2004.7705	yr	Date of observation in g band (Note 6) (time.epoch) (TIME_DATE)
g'mag	23.685	mag	[5/39] Model magnitude in g' filter (= gmag) (Note 5) (phot.mag;em.opt.B) (PHOT_SDSS_G)
e_g'mag	0.357	mag	Mean error on g'mag (= e_gmag) (stat.error;phot.mag) (ERROR)
psfMag_g	23.585	mag	[5/37] PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B) (PHOT_SDSS_G)
psfMagErr_g	0.321	mag	Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag) (ERROR)
petroMag_g	23.622	mag	[4/46] Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B) (PHOT_SDSS_G)
petroMagErr_g	0.590	mag	Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag) (ERROR)
petroRad_g	2.970	arcsec	Petrosian radius in g band (petroRad_g) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_g		arcsec	Mean error in gPrad (petroRadErr_g) (stat.error) (ERROR)
offsetRa_g	0.04	arcsec	Offset of g position along RA (offsetRa_g) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_g	0.01	arcsec	Offset of g position along Dec (offsetDec_g) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_g	0.533	arcsec	de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src) (EXTENSION_RAD)
gdVell	0.050	arcsec	de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_g	167.4	deg	Position angle of dVrad in g band (deVPhi_g) (pos.posAng) (POS_POS-ANG)
flags_r	4503874773712896		Detection flags, r band (flags_r) (Note 3) (meta.code) (CODE_MISC)
probPSF_r	1		0=notStar, 1=Star in r band (probPSF_r) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_r	6		Phototype in r band, 6=Star (type_r) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
rDate	2004.7705	yr	Date of observation in r band (Note 6) (time.epoch) (TIME_DATE)
r'mag	22.349	mag	[4/39] Model magnitude in r' filter (= rmag) (Note 5) (phot.mag;em.opt.R) (PHOT_SDSS_R)
e_r'mag	0.150	mag	Mean error on r'mag (= e_rmag) (stat.error;phot.mag) (ERROR)
psfMag_r	22.335	mag	[4/33] PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R) (PHOT_SDSS_R)
psfMagErr_r	0.143	mag	Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag) (ERROR)
petroMag_r	22.882	mag	[4/43] Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R) (PHOT_SDSS_R)
petroMagErr_r	0.516	mag	Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag) (ERROR)
petroRad_r	1.114	arcsec	Petrosian radius in r band (petroRad_r) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_r	0.173	arcsec	Mean error in rPrad (petroRadErr_r) (stat.error) (ERROR)
offsetRa_r	0.00	arcsec	Offset of r position along RA (offsetRa_r) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_r	0.00	arcsec	Offset of r position along Dec (offsetDec_r) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_r	0.002	arcsec	de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src) (EXTENSION_RAD)
rdVell	0.093	arcsec	de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_r	53.5	deg	Position angle of dVrad in r band (deVPhi_r) (pos.posAng) (POS_POS-ANG)
flags_i	275281608704		Detection flags, i band (flags_i) (Note 3) (meta.code) (CODE_MISC)
probPSF_i	1		0=notStar, 1=Star in i band (probPSF_i) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_i	6		Phototype in i band, 6=Star (type_i) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
iDate	2004.7705	yr	Date of observation in i band (Note 6) (time.epoch) (TIME_DATE)
i'mag	22.231	mag	[3/40] Model magnitude in i' filter (= imag) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_I)
e_i'mag	0.176	mag	Mean error on i'mag (= e_imag) (stat.error;phot.mag) (ERROR)
psfMag_i	22.241	mag	[3/34] PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I) (PHOT_SDSS_I)
psfMagErr_i	0.169	mag	Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag) (ERROR)
petroMag_i	24.037	mag	[3/45] Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I) (PHOT_SDSS_I)
petroMagErr_i	1.479	mag	Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag) (ERROR)
petroRad_i	1.033	arcsec	Petrosian radius in i band (petroRad_i) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_i	0.082	arcsec	Mean error in iPrad (petroRadErr_i) (stat.error) (ERROR)
offsetRa_i	-0.02	arcsec	Offset of i position along RA (offsetRa_i) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_i	0.01	arcsec	Offset of i position along Dec (offsetDec_i) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_i	0.105	arcsec	de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src) (EXTENSION_RAD)
idVell	0.238	arcsec	de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_i	87.0	deg	Position angle of dVrad in i band (deVPhi_i) (pos.posAng) (POS_POS-ANG)
flags_z	9007199388975105		Detection flags, z band (flags_z) (Note 3) (meta.code) (CODE_MISC)
probPSF_z	0		0=notStar, 1=Star in z band (probPSF_z) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_z	3		Phototype in z band, 6=Star (type_z) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
zDate	2004.7705	yr	Date of observation in z band (Note 6) (time.epoch) (TIME_DATE)
z'mag	21.443	mag	[3/38] Model magnitude in z filter (= zmag) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
e_z'mag	0.365	mag	Mean error on z'mag (= e_zmag) (stat.error;phot.mag) (ERROR)
psfMag_z	21.463	mag	[3/32] PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
psfMagErr_z	0.357	mag	Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag) (ERROR)
petroMag_z	21.881	mag	[3/42] Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
petroMagErr_z	0.990	mag	Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag) (ERROR)
petroRad_z	0.836	arcsec	Petrosian radius in z band (petroRad_z) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_z	0.636	arcsec	Mean error in zPrad (petroRadErr_z) (stat.error) (ERROR)
offsetRa_z	0.02	arcsec	Offset of z position along RA (offsetRa_z) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_z	0.00	arcsec	Offset of z position along Dec (offsetDec_z) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_z	2.647	arcsec	de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src) (EXTENSION_RAD)
zdVell	0.050	arcsec	de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_z	93.0	deg	Position angle of dVrad in z band (deVPhi_z) (pos.posAng) (POS_POS-ANG)
pmRa		mas/yr	[-6121/4129] Proper motion along Right Ascension (pmRa) (Note 8) (pos.pm;pos.eq.ra) (POS_EQ_PMRA)
pmRaErr		mas/yr	Mean error on pmRA (pmRaErr) (Note 8) (stat.error;pos.pm;pos.eq.ra) (ERROR)
pmDec		mas/yr	[-4846/4437] Proper motion along Declination (pmDec) (Note 8) (pos.pm;pos.eq.dec) (POS_EQ_PMDEC)
pmDecErr		mas/yr	Mean error on pmDE (pmDecErr) (Note 8) (stat.error;pos.pm;pos.eq.dec) (ERROR)
sigRA		mas	[0/8662] RMS residual of proper motion fit in RA (Note 8) (stat.fit.residual) (FIT_RESIDUAL)
sigDE		mas	[0/10625] RMS residual of proper motion fit in Dec (Note 8) (stat.fit.residual) (FIT_RESIDUAL)
match			[1/4] Number of USNO-B objects matched within 1arcsec (match) (Note 8) (meta.number) (NUMBER)
nFit			[4/6] Number of detections used in the pm fit, including SDSS (nFit) (Note 8) (meta.number) (NUMBER)
g(O)			Magnitude from O plate recalibrated to g (Note 8) (phot.mag;em.opt.B) (PHOT_PHG_B)
r(E)			Magnitude from E plate recalibrated to r (Note 8) (phot.mag;em.opt.R) (PHOT_PHG_R)
g(J)			Magnitude from J plate recalibrated to g (Note 8) (phot.mag;em.opt.B) (PHOT_PHG_B)
r(F)			Magnitude from F plate recalibrated to r (Note 8) (phot.mag;em.opt.R) (PHOT_PHG_R)
i(N)			Magnitude from N plate recalibrated to i (Note 8) (phot.mag;em.opt.I) (PHOT_PHG_I)
zph			⁽ⁱ⁾ [-9999/] Photometric redshift; estimated by robust fit to nearest neighbors in a reference set (Note 12) (src.redshift) (REDSHIFT_PHOT)
zErr			[-9999/] Estimated error of the photometric redshift (zErr) (Note 12) (stat.error) (ERROR)
nnAvgZ			[0.009/0.9] average redshift of the nearest neighbors; if significantly different from zph this might be a better estimate than zph (nnAvgZ) (src.redshift.phot) (REDSHIFT_PHOT)
chisq_zph			Chi-square value for the minimum chi-square template fit (chisq_zph) (stat.value) (FIT_CHI2)
absMagU		mag	[-644/4] rest frame u' absolute magnitude (absMagU) (phys.magAbs) (PHOT_ABS-MAG_BAND)
absMagG		mag	[-472/3] rest frame g' absolute magnitude (absMagG) (phys.magAbs) (PHOT_ABS-MAG_BAND)
absMagR		mag	[-351/3] rest frame r' absolute magnitude (absMagR) (phys.magAbs) (PHOT_ABS-MAG_BAND)
absMagI		mag	[-271/7] rest frame i' absolute magnitude (absMagI) (phys.magAbs) (PHOT_ABS-MAG_BAND)
absMagZ		mag	[-199/3] rest frame z' absolute magnitude (absMagZ) (phys.magAbs) (PHOT_ABS-MAG_BAND)