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Glossary of WSA attributes
This Glossary alphabetically lists all attributes used in the SSA database(s) held in the WSA. If you would like to have more information about the schema tables please use the SSA Schema Browser (other Browser versions).

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

R
Name	Schema Table	Database	Description	Type	Length	Unit	Default Value	Unified Content Descriptor
r_3sig	twomass_xsc	2MASS	3-sigma K isophotal semi-major axis.	real	4	arcsec		ERROR
r_ext	twomass_xsc	2MASS	extrapolation/total radius.	real	4	arcsec		EXTENSION_RAD
r_fc	twomass_xsc	2MASS	K fiducial Kron circular aperture radius.	real	4	arcsec		EXTENSION_RAD
r_fe	twomass_xsc	2MASS	K fiducial Kron elliptical aperture semi-major axis.	real	4	arcsec		EXTENSION_RAD
r_j21fc	twomass_xsc	2MASS	21mag/sq." isophotal J fiducial circular ap. radius.	real	4	arcsec		EXTENSION_RAD
r_j21fe	twomass_xsc	2MASS	21mag/sq." isophotal J fiducial ell. ap. semi-major axis.	real	4	arcsec		EXTENSION_RAD
r_k20fc	twomass_xsc	2MASS	20mag/sq." isophotal K fiducial circular ap. radius.	real	4	arcsec		EXTENSION_RAD
r_k20fe	twomass_xsc	2MASS	20mag/sq." isophotal K fiducial ell. ap. semi-major axis.	real	4	arcsec		EXTENSION_RAD
ra	Detection	SSA	Celestial Right Ascension	float	8	degrees		POS_EQ_RA_MAIN
ra	Source	SSA	Mean RA, computed from detections merged in this catalogue	float	8	degrees		POS_EQ_RA_MAIN
ra	twomass_psc	2MASS	J2000 right ascension with respect to the ICRS	float	8	degrees		POS_EQ_RA_MAIN
ra	twomass_scn	2MASS	Right ascension of scan center for equinox J2000.	float	8	degrees		POS_EQ_RA_MAIN
ra	twomass_xsc	2MASS	Right ascension (J2000 decimal deg) based on peak pixel.	float	8	degrees		POS_EQ_RA_MAIN
ra_1	twomass_scn	2MASS	J2000 right ascension of the eastern corner at start of scan.	float	8	degrees		POS_EQ_RA_MAIN
ra_2	twomass_scn	2MASS	J2000 right ascension of the western corner at start of scan.	float	8	degrees		POS_EQ_RA_MAIN
ra_3	twomass_scn	2MASS	J2000 right ascension of the eastern corner at end of scan.	float	8	degrees		POS_EQ_RA_MAIN
ra_4	twomass_scn	2MASS	J2000 right ascension of the western corner at end of scan.	float	8	degrees		POS_EQ_RA_MAIN
raCol	Plate	SSA	Name of RA column in reference catalogue	varchar	16			REMARKS
radecSys	Plate	SSA	Co-ordinate system of raPnt/decPnt, eg. FK4	varchar	4			POS_REFERENCE-SYSTEM
raPMCol	Plate	SSA	Name of RA proper motion column in reference catalogue	varchar	16			REMARKS
raPnt	Plate	SSA	Mean plate centre RA	real	4	degrees		POS_EQ_RA_MAIN
rCritAbs	Plate	SSA	Absolute object rejection criterion	real	4	microns		REDUCT_PARAM
rCritFin	Plate	SSA	Final residual tolerance	real	4	sigma		REDUCT_PARAM
rCritIni	Plate	SSA	Initial matching tolerance for refstars	real	4	microns		REDUCT_PARAM
rCritRel	Plate	SSA	Relative object rejection criterion	real	4			REDUCT_PARAM
rd_flg	twomass_psc	2MASS	Read flag.	varchar	3			CODE_MISC
recNum	Detection	SSA	The record number in the original IAM file	int	4			RECORD
rel0	twomass_scn	2MASS	Flag indicating whether the scan is contained in the TWOMASS Sampler Release.	smallint	2			CODE_MISC
rel1	twomass_scn	2MASS	Flag indicating whether the scan is contained in the TWOMASS First Incremental Data Release (IDR1).	smallint	2			CODE_MISC
rel2	twomass_scn	2MASS	Flag indicating whether the scan is contained in the TWOMASS Second Incremental Data Release (IDR2).	smallint	2			CODE_MISC
rh	twomass_scn	2MASS	Relative humidity of telescope enclosure at beginning of scan.	smallint	2	%		OBS_CONDITIONS
rvCol	Plate	SSA	Name of radial velocity column in reference catalogue	varchar	16			REMARKS