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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 (044.707986+00.299739)[ICRS], at Epoch of catalog (ObsDate) (pos.angDistance) (POS_ANG_DIST_GENERAL)
_RAJ2000	02 58 49.91655	"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 17 59.0613	"d:m:s"	Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_RAB1950	02 56 16.00633	"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 06 02.7966	"d:m:s"	Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_Glon	176.32466941	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	-48.90330253	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	044.707986	deg	⁽ⁱ⁾ Right Ascension of the object (ICRS) at Epoch="ObsDate" (ra) (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN)
dec	+00.299739	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	J025849.91+001759.0		⁽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	2738-301-4-0217-0185		⁽ⁱ⁾ [0-9 -] SDSS object identifier (Note 2) (meta.id) (ID_ALTERNATIVE)
objID	1237657234378916025		⁽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	1237657234378916024		Pointer to parent (if object deblended) (meta.id.parent) (ID_PARENT)
flags	17661241201480		Photo Object Attribute flags (Note 3) (meta.code.error) (CODE_MISC)
Status	1025		Hexadecimal status (Note 4) (meta.code) (CODE_MISC)
raErr	0.008	arcsec	[0/51703] Mean error on RAdeg (raErr) (stat.error;pos.eq.ra) (ERROR)
decErr	0.008	arcsec	[0/20301] Mean error on DEdeg (decErr) (stat.error;pos.eq.dec) (ERROR)
ObsDate	2001.8900	yr	⁽ⁱ⁾ Mean Observation date (Note 6) (time.epoch;obs;stat.mean) (TIME_DATE)
Q	3		[1/3] Quality of the observation: 1=bad 2=acceptable 3=good (meta.code.qual;obs.param;obs) (CODE_QUALITY)
u	23.999	mag	⁽ⁱ⁾ [4/38] Model magnitude in u filter, AB scale (u) (Note 5) (phot.mag;em.opt.U) (PHOT_SDSS_U)
err_u	0.967	mag	Mean error on umag (err_u) (stat.error;phot.mag) (ERROR)
g	20.973	mag	⁽ⁱ⁾ [5/40] Model magnitude in g filter, AB scale (g) (Note 5) (phot.mag;em.opt.B) (PHOT_SDSS_G)
err_g	0.038	mag	Mean error on gmag (err_g) (stat.error;phot.mag) (ERROR)
r	19.380	mag	⁽ⁱ⁾ [4/39] Model magnitude in r filter, AB scale (r) (Note 5) (phot.mag;em.opt.R) (PHOT_SDSS_R)
err_r	0.015	mag	Mean error on rmag (err_r) (stat.error;phot.mag) (ERROR)
i	17.823	mag	⁽ⁱ⁾ [3/40] Model magnitude in i filter, AB scale (i) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_I)
err_i	0.007	mag	Mean error on imag (err_i) (stat.error;phot.mag) (ERROR)
z	16.956	mag	⁽ⁱ⁾ [3/38] Model magnitude in z filter, AB scale (z) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
err_z	0.012	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	9007199472878921		Detection flags, u band (flags_u) (Note 3) (meta.code) (CODE_MISC)
probPSF_u	1		0=notStar, 1=Star in u band (probPSF_u) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_u	6		[0/6] Phototype in u band, 6=Star (type_u) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
uDate	2001.8900	yr	Date of observation in u band (Note 6) (time.epoch) (TIME_DATE)
u'mag	23.999	mag	[4/38] Model magnitude in u' filter (= umag) (Note 5) (phot.mag;em.opt.U) (PHOT_SDSS_U)
e_u'mag	0.967	mag	Mean error on u'mag (= e_umag) (stat.error;phot.mag) (ERROR)
psfMag_u	23.741	mag	[5/34] PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U) (PHOT_SDSS_U)
psfMagErr_u	0.833	mag	Mean error on upmag (psfMagErr_u) (stat.error;phot.mag) (ERROR)
petroMag_u	24.785	mag	[3/43] Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U) (PHOT_SDSS_U)
petroMagErr_u	2.027	mag	Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag) (ERROR)
petroRad_u	11.305	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	0.03	arcsec	Offset of u position along RA (offsetRa_u) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_u	-0.04	arcsec	Offset of u position along Dec (offsetDec_u) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_u	0.232	arcsec	de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src) (EXTENSION_RAD)
udVell	0.095	arcsec	de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_u	104.9	deg	Position angle of dVrad in u band (deVPhi_u) (pos.posAng) (POS_POS-ANG)
flags_g	17867416442184		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	2001.8900	yr	Date of observation in g band (Note 6) (time.epoch) (TIME_DATE)
g'mag	20.973	mag	[5/39] Model magnitude in g' filter (= gmag) (Note 5) (phot.mag;em.opt.B) (PHOT_SDSS_G)
e_g'mag	0.038	mag	Mean error on g'mag (= e_gmag) (stat.error;phot.mag) (ERROR)
psfMag_g	20.965	mag	[5/37] PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B) (PHOT_SDSS_G)
psfMagErr_g	0.044	mag	Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag) (ERROR)
petroMag_g	21.019	mag	[4/46] Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B) (PHOT_SDSS_G)
petroMagErr_g	0.059	mag	Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag) (ERROR)
petroRad_g	43.775	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	-0.01	arcsec	Offset of g position along RA (offsetRa_g) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_g	0.03	arcsec	Offset of g position along Dec (offsetDec_g) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_g	0.055	arcsec	de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src) (EXTENSION_RAD)
gdVell	0.145	arcsec	de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_g	105.7	deg	Position angle of dVrad in g band (deVPhi_g) (pos.posAng) (POS_POS-ANG)
flags_r	4503599988113480		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	2001.8900	yr	Date of observation in r band (Note 6) (time.epoch) (TIME_DATE)
r'mag	19.380	mag	[4/39] Model magnitude in r' filter (= rmag) (Note 5) (phot.mag;em.opt.R) (PHOT_SDSS_R)
e_r'mag	0.015	mag	Mean error on r'mag (= e_rmag) (stat.error;phot.mag) (ERROR)
psfMag_r	19.371	mag	[4/33] PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R) (PHOT_SDSS_R)
psfMagErr_r	0.023	mag	Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag) (ERROR)
petroMag_r	19.448	mag	[4/43] Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R) (PHOT_SDSS_R)
petroMagErr_r	0.024	mag	Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag) (ERROR)
petroRad_r	1.210	arcsec	Petrosian radius in r band (petroRad_r) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_r	0.040	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	0.000	arcsec	de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src) (EXTENSION_RAD)
rdVell	0.612	arcsec	de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_r	69.7	deg	Position angle of dVrad in r band (deVPhi_r) (pos.posAng) (POS_POS-ANG)
flags_i	352354376		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	2001.8900	yr	Date of observation in i band (Note 6) (time.epoch) (TIME_DATE)
i'mag	17.823	mag	[3/40] Model magnitude in i' filter (= imag) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_I)
e_i'mag	0.007	mag	Mean error on i'mag (= e_imag) (stat.error;phot.mag) (ERROR)
psfMag_i	17.824	mag	[3/34] PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I) (PHOT_SDSS_I)
psfMagErr_i	0.031	mag	Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag) (ERROR)
petroMag_i	17.870	mag	[3/45] Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I) (PHOT_SDSS_I)
petroMagErr_i	0.009	mag	Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag) (ERROR)
petroRad_i	1.130	arcsec	Petrosian radius in i band (petroRad_i) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_i	0.013	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	0.021	arcsec	de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src) (EXTENSION_RAD)
idVell	1.000	arcsec	de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_i	43.6	deg	Position angle of dVrad in i band (deVPhi_i) (pos.posAng) (POS_POS-ANG)
flags_z	486572616		Detection flags, z band (flags_z) (Note 3) (meta.code) (CODE_MISC)
probPSF_z	1		0=notStar, 1=Star in z band (probPSF_z) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_z	6		Phototype in z band, 6=Star (type_z) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
zDate	2001.8900	yr	Date of observation in z band (Note 6) (time.epoch) (TIME_DATE)
z'mag	16.956	mag	[3/38] Model magnitude in z filter (= zmag) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
e_z'mag	0.012	mag	Mean error on z'mag (= e_zmag) (stat.error;phot.mag) (ERROR)
psfMag_z	16.961	mag	[3/32] PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
psfMagErr_z	0.018	mag	Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag) (ERROR)
petroMag_z	17.017	mag	[3/42] Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
petroMagErr_z	0.017	mag	Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag) (ERROR)
petroRad_z	1.368	arcsec	Petrosian radius in z band (petroRad_z) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_z	0.038	arcsec	Mean error in zPrad (petroRadErr_z) (stat.error) (ERROR)
offsetRa_z	-0.03	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	0.066	arcsec	de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src) (EXTENSION_RAD)
zdVell	0.821	arcsec	de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_z	106.4	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)