TABLE  firstSource

This table contains brief descriptions of the parameters provided for each source in the FIRST SC. It contains 811,117 sources arranged in order of increasing right ascension. Required constraints: Primary key is (seqNo)

Name	Type	Length	Unit	Description	Default Value	Unified Content Descriptor
fieldName	varchar	12		Name of the coadded image containing the source (encodes the position of the field center).		ID_IMAGE
seqNo	int	4		sequential object number		ID_NUMBER
cx	float	8		unit vector of spherical co-ordinates		POS_EQ_X
cy	float	8		unit vector of spherical co-ordinates		POS_EQ_Y
cz	float	8		unit vector of spherical co-ordinates		POS_EQ_Z
htmID	bigint	8		Hierarchical Triangular Mesh (HTM) index, 20 deep, for equatorial co-ordinates		POS_GENERAL
ra	float	8	degrees	J2000 Celestial Right Ascension		POS_EQ_RA_MAIN
dec	float	8	degrees	J2000 Celestial Declination		POS_EQ_DEC_MAIN
warnFlag	varchar	1		Warning flag indicating that the source may be a sidelobe of a nearby bright source.		CODE_MISC
fPeak	real	4	mJy	peak flux densities		PHOT_FLUX_RADIO_1.4G
fInt	real	4	mJy	integrated flux densities		PHOT_FLUX_RADIO_1.4G
rms	real	4	mJy	local noise estimate at the source position		INST_NOISE
maj	real	4	arcsec	major axes derived from the elliptical Gaussian model for the source after deconvolution.		EXTENSION_FWHM_MAJ
min	real	4	arcsec	minor axes derived from the elliptical Gaussian model for the source after deconvolution.		EXTENSION_FWHM_MIN
pa	real	4	degrees	position angle (east of north) derived from the elliptical Gaussian model for the source		POS_POS-ANG
fMaj	real	4	arcsec	major axes derived from the elliptical Gaussian model for the source before deconvolution.		EXTENSION_FWHM_MAJ
fMin	real	4	arcsec	minor axes derived from the elliptical Gaussian model for the source before deconvolution.		EXTENSION_FWHM_MIN
fPA	real	4	degrees	position angle (east of north) derived from the elliptical Gaussian model for the source before deconvolution.		POS_POS-ANG
Total length		101