Note: please credit the usage of the UKIDSS data (details at http://www.ukidss.org/archive/archive.html)

Column	Value		Explain   (UCD)
_r		arcsec	Distance from center (008.042673-00.758197)[FK5/J2000] (pos.angDistance) (POS_ANG_DIST_GENERAL)
_RAJ2000		"h:m:s"	Right ascension (FK5, Equinox=J2000.0) (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.eq.ra) (POS_EQ_RA)
_DEJ2000		"d:m:s"	Declination (FK5, Equinox=J2000.0) (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.eq.dec) (POS_EQ_DEC)
_RAB1950		"h:m:s"	Right ascension (FK4, Equinox=B1950.0) (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.eq.ra) (POS_EQ_RA)
_DEB1950		"d:m:s"	Declination (FK4, Equinox=B1950.0) (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.eq.dec) (POS_EQ_DEC)
_Glon		deg	Galactic longitude (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		deg	Galactic latitude (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)
ULAS	END		(i) Name of source in survey (Note G5)   (meta.id;meta.main) (ID_MAIN)
m			[1/2] "2" indicates a duplicated source (Note G6)   (meta.code.multip) (CODE_MULT_INDEX)
RAJ2000		deg	(i) Right ascension (J2000) (recommended designation of the sources is ULAS JHHMMSS.ss+DMMSS.s, see http://cds.u-strasbg.fr/cgi-bin/Dic?ULAS) (pos.eq.ra;meta.main) (POS_EQ_RA_MAIN)
DEJ2000		deg	(i) Declination (J2000) (recommended designation of the sources is ULAS JHHMMSS.ss+DMMSS.s, see http://cds.u-strasbg.fr/cgi-bin/Dic?ULAS) (pos.eq.dec;meta.main) (POS_EQ_DEC_MAIN)
Ymag		mag	(i) UKIDSS Y default magnitude (yAperMag3) (Note G1)   (phot.mag;em.IR.J) (PHOT_MAG_Y)
e_Ymag		mag	Mean error on Ymag (yAperMag3Err) (stat.error;phot.mag;em.opt.B) (ERROR)
Jmag		mag	(i) UKIDSS J default magnitude (j_1AperMag3) (Note G1)   (phot.mag;em.IR.J) (PHOT_MAG_J)
e_Jmag		mag	Mean error on Jmag (j_1AperMag3Err) (stat.error;phot.mag;em.IR.J) (ERROR)
Hmag		mag	(i) UKIDSS H default magnitude ( hAperMag3) (Note G1)   (phot.mag;em.IR.H) (PHOT_MAG_H)
e_Hmag		mag	Mean error on Hmag (hAperMag3Err) (stat.error;phot.mag;em.IR.H) (ERROR)
Kmag		mag	(i) UKIDSS K default magnitude (kAperMag3) (Note G1)   (phot.mag;em.IR.K) (PHOT_MAG_K)
e_Kmag		mag	Mean error on Kmag (kAperMag3Err) (stat.error;phot.mag;em.IR.K) (ERROR)
ID			Unique ID of this merged detection (sourceID) (meta.id) (ID_NUMBER)
Epoch		yr	Epoch of position measurement (epoch) (time.epoch) (TIME_EPOCH)
nf			Number of frames (nFrames) (meta.number) (NUMBER)
mStat			Merged profile class statistic (mergedClassStat) (stat) (STAT_PROP)
cl			Source class: -3 = probable (70-90%) galaxy, -2 = probable (70-90%) star, -1 = star, 0 = noise, 1 = galaxy (Note)   (meta.code.class;src.class.starGalaxy) (CLASS_CODE)
p*			[0,1] Probability of being a star (pStar) (stat.fit.goodness) (STAT_PROBABILITY)
pG			[0,1] Probability of being a galaxy (pGalaxy) (stat.fit.goodness) (STAT_PROBABILITY)
pN			[0,1] Probability of being noise (pNoise) (stat.fit.goodness) (STAT_PROBABILITY)
Ytot		mag	Total point source Y magnitude (yHallMag) (phot.mag;em.IR.J) (PHOT_MAG_Y)
e_Ytot		mag	Mean error on Ytot (yHallMagErr) (stat.error) (ERROR)
pYmag		mag	Petrosian Y magnitude (yPetroMag) (phot.mag;em.IR.J) (PHOT_MAG_Y)
e_pYmag		mag	Mean error on pYmag (yPetroMagErr) (stat.error;phot.mag) (ERROR)
Ydiam		pix	Y-band RMS of axes of ellipse fit (yGausig) (phys.angSize;src) (EXTENSION_RAD)
Yell			[0,1] Source ellipticity in Y-band (yEll) (src.ellipticity) (PHYS_ELLIPTICITY)
Ypa		deg	[0,180] Position angle of Y-band ellipse (yPA) (pos.posAng;instr.det) (POS_POS-ANG)
Ybad			Y-band zero confidence pixels (yErrBits) (Note G3)   (meta.code) (CODE_MISC)
Ycl			Source class: -3 = probable (70-90%) galaxy, -2 = probable (70-90%) star, -1 = star, 0 = noise, 1 = galaxy (Note)   (meta.code.class;src.class.starGalaxy) (CLASS_STAR/GALAXY)
Yflags			[0,8388607] Y-band flags (yppErrBits) (Note G4)   (meta.code.error) (CODE_ERROR)
Jtot		mag	Total point source J magnitude (j_1HallMag) (phot.mag;em.IR.J) (PHOT_INT-MAG_J)
e_Jtot		mag	Mean error on Jtot (j_1HallMagErr) (stat.error) (ERROR)
pJmag		mag	Petrosian J magnitude (j_1PetroMag) (phot.mag;em.IR.J) (PHOT_MAG_J)
e_pJmag		mag	Mean error on pJmag (j_1PetroMagErr) (stat.error;phot.mag) (ERROR)
Jdiam		pix	J-band RMS of axes of ellipse fit (j_1Gausig) (phys.angSize;src) (EXTENSION_RAD)
Jell			[0/1] J-band ellipticity (G1-b/a) (j_1Ell) (src.ellipticity) (PHYS_ELLIPTICITY)
Jpa		deg	[0,180] J-band position angle (j_1PA) (pos.posAng) (POS_POS-ANG)
Jbad			J-band zero confidence pixels (j_1ErrBits) (Note G3)   (meta.code) (CODE_MISC)
Jcl			Source class: -3 = probable (70-90%) galaxy, -2 = probable (70-90%) star, -1 = star, 0 = noise, 1 = galaxy (Note)   (meta.code.class;src.class.starGalaxy) (CLASS_STAR/GALAXY)
Jflags			[0,8388607] J-band flags (j_1ppErrBits) (Note G4)   (meta.code.error) (CODE_ERROR)
Jdx		arcsec	ξ offset to Y-band source (j_1Xi) (pos;arith.diff) (POS_OFFSET)
Jdy		arcsec	η offset to Y-band source (j_1Eta) (pos;arith.diff) (POS_OFFSET)
Htot		mag	Total point source H magnitude (hHallMag) (phot.mag;em.IR.H) (PHOT_INT-MAG_H)
e_Htot		mag	Mean error on Htot (hHallMagErr) (stat.error) (ERROR)
pHmag		mag	Petrosian H magnitude (hPetroMag) (phot.mag;em.IR.H) (PHOT_MAG_H)
e_pHmag		mag	Mean error on Hpag (hPetroMagErr) (stat.error;phot.mag) (ERROR)
Hdiam		pix	RMS of axes of ellipse fit in H-band (hGausig) (phys.angSize;src) (EXTENSION_RAD)
Hell			Ellipticity in H-band (hEll) (src.ellipticity) (PHYS_ELLIPTICITY)
Hpa		deg	[0,180] H-band position angle (hPA) (pos.posAng) (POS_POS-ANG)
Hbad			H-band zero confidence pixels (hErrBits) (Note G3)   (meta.code) (CODE_MISC)
Hcl			Source class: -3 = probable (70-90%) galaxy, -2 = probable (70-90%) star, -1 = star, 0 = noise, 1 = galaxy (Note)   (meta.code.class;src.class.starGalaxy) (CLASS_STAR/GALAXY)
Hflags			[0,8388607] flags (hppErrBits) (Note G4)   (meta.code.error) (CODE_ERROR)
Hdx		arcsec	ξ offset to Y-band source (hXi) (pos;arith.diff) (POS_OFFSET)
Hdy		arcsec	η offset to Y-band source (hEta) (pos;arith.diff) (POS_OFFSET)
Ktot		mag	Total point source K magnitude (kHallMag) (phot.mag;em.IR.K) (PHOT_INT-MAG_K)
e_Ktot		mag	Mean error on Ktot (kHallMagErr) (stat.error) (ERROR)
pKmag		mag	Petrosian K magnitude (kPetroMag) (phot.mag;em.IR.K) (PHOT_MAG_K)
e_pKmag		mag	Mean error on pKmag (kPetroMagErr) (stat.error;phot.mag) (ERROR)
Kdiam		pix	RMS of axes of ellipse fit in K-band (kGausig) (phys.angSize;src) (EXTENSION_RAD)
Kell			K-band ellipticity (kEll) (src.ellipticity) (PHYS_ELLIPTICITY)
Kpa		deg	[0,180] K-band position angle (kPA) (pos.posAng) (POS_POS-ANG)
Kbad			K-band zero confidence pixels (kErrBits) (Note G3)   (meta.code) (CODE_MISC)
Kcl			Source class: -3 = probable (70-90%) galaxy, -2 = probable (70-90%) star, -1 = star, 0 = noise, 1 = galaxy (Note)   (meta.code.class;src.class.starGalaxy) (CLASS_STAR/GALAXY)
Kflags			[0,8388607] flags (kppErrBits) (Note G4)   (meta.code.error) (CODE_ERROR)
Kdx		arcsec	ξ offset to Y-band source (kXi) (pos;arith.diff) (POS_OFFSET)
Kdy		arcsec	η offset to Y-band source (kEta) (pos;arith.diff) (POS_OFFSET)

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