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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	0.001	arcsec	Distance from center (006.117671-00.741024)[ICRS], at Epoch of catalog (ObsDate) (pos.angDistance) (POS_ANG_DIST_GENERAL)
_RAJ2000	00 24 28.24099	"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 44 27.6860	"d:m:s"	Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_RAB1950	00 21 54.58312	"h:m:s"	Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra) (POS_EQ_RA)
_DEB1950	-01 01 04.8466	"d:m:s"	Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec) (POS_EQ_DEC)
_Glon	108.03563206	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	-62.83021810	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	006.117671	deg	⁽ⁱ⁾ Right Ascension of the object (ICRS) at Epoch="ObsDate" (ra) (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN)
dec	-00.741024	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	3		Type of object (3=galaxy, 6=star) (Note 1) (src.class) (CLASS_OBJECT)
SDSS12	J002428.24-004427.6		⁽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	3325-301-2-0149-0320		⁽ⁱ⁾ [0-9 -] SDSS object identifier (Note 2) (meta.id) (ID_ALTERNATIVE)
objID	1237659754446520640		⁽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	68987912448		Photo Object Attribute flags (Note 3) (meta.code.error) (CODE_MISC)
Status	1025		Hexadecimal status (Note 4) (meta.code) (CODE_MISC)
raErr	0.142	arcsec	[0/51703] Mean error on RAdeg (raErr) (stat.error;pos.eq.ra) (ERROR)
decErr	0.062	arcsec	[0/20301] Mean error on DEdeg (decErr) (stat.error;pos.eq.dec) (ERROR)
ObsDate	2002.6786	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	24.068	mag	⁽ⁱ⁾ [4/38] Model magnitude in u filter, AB scale (u) (Note 5) (phot.mag;em.opt.U) (PHOT_SDSS_U)
err_u	2.167	mag	Mean error on umag (err_u) (stat.error;phot.mag) (ERROR)
g	21.364	mag	⁽ⁱ⁾ [5/40] Model magnitude in g filter, AB scale (g) (Note 5) (phot.mag;em.opt.B) (PHOT_SDSS_G)
err_g	0.109	mag	Mean error on gmag (err_g) (stat.error;phot.mag) (ERROR)
r	20.532	mag	⁽ⁱ⁾ [4/39] Model magnitude in r filter, AB scale (r) (Note 5) (phot.mag;em.opt.R) (PHOT_SDSS_R)
err_r	0.073	mag	Mean error on rmag (err_r) (stat.error;phot.mag) (ERROR)
i	20.373	mag	⁽ⁱ⁾ [3/40] Model magnitude in i filter, AB scale (i) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_I)
err_i	0.100	mag	Mean error on imag (err_i) (stat.error;phot.mag) (ERROR)
z	19.918	mag	⁽ⁱ⁾ [3/38] Model magnitude in z filter, AB scale (z) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
err_z	0.255	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	9007199388992769		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	2002.6786	yr	Date of observation in u band (Note 6) (time.epoch) (TIME_DATE)
u'mag	24.068	mag	[4/38] Model magnitude in u' filter (= umag) (Note 5) (phot.mag;em.opt.U) (PHOT_SDSS_U)
e_u'mag	2.167	mag	Mean error on u'mag (= e_umag) (stat.error;phot.mag) (ERROR)
psfMag_u	24.006	mag	[5/34] PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U) (PHOT_SDSS_U)
psfMagErr_u	1.015	mag	Mean error on upmag (psfMagErr_u) (stat.error;phot.mag) (ERROR)
petroMag_u	20.988	mag	[3/43] Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U) (PHOT_SDSS_U)
petroMagErr_u	0.390	mag	Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag) (ERROR)
petroRad_u	11.307	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	0.07	arcsec	Offset of u position along RA (offsetRa_u) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_u	0.02	arcsec	Offset of u position along Dec (offsetDec_u) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_u	29.669	arcsec	de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src) (EXTENSION_RAD)
udVell	0.502	arcsec	de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_u	12.4	deg	Position angle of dVrad in u band (deVPhi_u) (pos.posAng) (POS_POS-ANG)
flags_g	275154764032		Detection flags, g band (flags_g) (Note 3) (meta.code) (CODE_MISC)
probPSF_g	0		0=notStar, 1=Star in g band (probPSF_g) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_g	3		Phototype in g band, 6=Star (type_g) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
gDate	2002.6786	yr	Date of observation in g band (Note 6) (time.epoch) (TIME_DATE)
g'mag	21.364	mag	[5/39] Model magnitude in g' filter (= gmag) (Note 5) (phot.mag;em.opt.B) (PHOT_SDSS_G)
e_g'mag	0.109	mag	Mean error on g'mag (= e_gmag) (stat.error;phot.mag) (ERROR)
psfMag_g	22.337	mag	[5/37] PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B) (PHOT_SDSS_G)
psfMagErr_g	0.125	mag	Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag) (ERROR)
petroMag_g	21.470	mag	[4/46] Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B) (PHOT_SDSS_G)
petroMagErr_g	0.252	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	-0.18	arcsec	Offset of g position along RA (offsetRa_g) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_g	-0.05	arcsec	Offset of g position along Dec (offsetDec_g) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_g	2.716	arcsec	de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src) (EXTENSION_RAD)
gdVell	0.053	arcsec	de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_g	98.6	deg	Position angle of dVrad in g band (deVPhi_g) (pos.posAng) (POS_POS-ANG)
flags_r	4503874773745664		Detection flags, r band (flags_r) (Note 3) (meta.code) (CODE_MISC)
probPSF_r	0		0=notStar, 1=Star in r band (probPSF_r) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_r	3		Phototype in r band, 6=Star (type_r) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
rDate	2002.6786	yr	Date of observation in r band (Note 6) (time.epoch) (TIME_DATE)
r'mag	20.532	mag	[4/39] Model magnitude in r' filter (= rmag) (Note 5) (phot.mag;em.opt.R) (PHOT_SDSS_R)
e_r'mag	0.073	mag	Mean error on r'mag (= e_rmag) (stat.error;phot.mag) (ERROR)
psfMag_r	21.571	mag	[4/33] PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R) (PHOT_SDSS_R)
psfMagErr_r	0.081	mag	Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag) (ERROR)
petroMag_r	20.751	mag	[4/43] Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R) (PHOT_SDSS_R)
petroMagErr_r	0.194	mag	Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag) (ERROR)
petroRad_r	3.169	arcsec	Petrosian radius in r band (petroRad_r) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_r	0.650	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	2.372	arcsec	de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src) (EXTENSION_RAD)
rdVell	0.200	arcsec	de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_r	89.0	deg	Position angle of dVrad in r band (deVPhi_r) (pos.posAng) (POS_POS-ANG)
flags_i	275146375168		Detection flags, i band (flags_i) (Note 3) (meta.code) (CODE_MISC)
probPSF_i	0		0=notStar, 1=Star in i band (probPSF_i) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
type_i	3		Phototype in i band, 6=Star (type_i) (Note 1) (src.class.starGalaxy) (CLASS_STAR/GALAXY)
iDate	2002.6786	yr	Date of observation in i band (Note 6) (time.epoch) (TIME_DATE)
i'mag	20.373	mag	[3/40] Model magnitude in i' filter (= imag) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_I)
e_i'mag	0.100	mag	Mean error on i'mag (= e_imag) (stat.error;phot.mag) (ERROR)
psfMag_i	21.432	mag	[3/34] PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I) (PHOT_SDSS_I)
psfMagErr_i	0.111	mag	Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag) (ERROR)
petroMag_i	20.542	mag	[3/45] Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I) (PHOT_SDSS_I)
petroMagErr_i	0.265	mag	Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag) (ERROR)
petroRad_i	3.236	arcsec	Petrosian radius in i band (petroRad_i) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_i	0.676	arcsec	Mean error in iPrad (petroRadErr_i) (stat.error) (ERROR)
offsetRa_i	-0.16	arcsec	Offset of i position along RA (offsetRa_i) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_i	-0.04	arcsec	Offset of i position along Dec (offsetDec_i) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_i	1.759	arcsec	de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src) (EXTENSION_RAD)
idVell	0.399	arcsec	de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity) (PHYS_ELLIPTICITY)
deVPhi_i	105.2	deg	Position angle of dVrad in i band (deVPhi_i) (pos.posAng) (POS_POS-ANG)
flags_z	134266881		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	2002.6786	yr	Date of observation in z band (Note 6) (time.epoch) (TIME_DATE)
z'mag	19.918	mag	[3/38] Model magnitude in z filter (= zmag) (Note 5) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
e_z'mag	0.255	mag	Mean error on z'mag (= e_zmag) (stat.error;phot.mag) (ERROR)
psfMag_z	20.798	mag	[3/32] PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
psfMagErr_z	0.248	mag	Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag) (ERROR)
petroMag_z	20.292	mag	[3/42] Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I) (PHOT_SDSS_Z)
petroMagErr_z	0.803	mag	Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag) (ERROR)
petroRad_z	2.103	arcsec	Petrosian radius in z band (petroRad_z) (phys.angSize;src) (EXTENSION_RAD)
petroRadErr_z	0.486	arcsec	Mean error in zPrad (petroRadErr_z) (stat.error) (ERROR)
offsetRa_z	0.04	arcsec	Offset of z position along RA (offsetRa_z) (pos.angDistance) (POS_EQ_RA_OFF)
offsetDec_z	0.03	arcsec	Offset of z position along Dec (offsetDec_z) (pos.angDistance) (POS_EQ_DEC_OFF)
deVRad_z	1.099	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	114.9	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)