SuperCOSMOS Science Archive

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

J

Name Schema Table Database Description Type Length Unit Default Value Unified Content Descriptor

j_2mrat twomass_scn 2MASS J-band average 2nd image moment ratio. real 4 FIT_PARAM_VALUE

j_2mrat twomass_sixx2_scn 2MASS J band average 2nd image moment ratio for scan real 4

j_5sig_ba twomass_xsc 2MASS J minor/major axis ratio fit to the 5-sigma isophote. real 4 PHYS_AXIS-RATIO

j_5sig_phi twomass_xsc 2MASS J angle to 5-sigma major axis (E of N). smallint 2 degrees ERROR

j_5surf twomass_xsc 2MASS J central surface brightness (r<=5). real 4 mag PHOT_SB_GENERAL

j_ba twomass_xsc 2MASS J minor/major axis ratio fit to the 3-sigma isophote. real 4 PHYS_AXIS-RATIO

j_back twomass_xsc 2MASS J coadd median background. real 4 CODE_MISC

j_bisym_chi twomass_xsc 2MASS J bi-symmetric cross-correlation chi. real 4 FIT_PARAM_VALUE

j_bisym_rat twomass_xsc 2MASS J bi-symmetric flux ratio. real 4 PHOT_FLUX_RATIO

j_bndg_amp twomass_xsc 2MASS J banding maximum FT amplitude on this side of coadd. real 4 DN FIT_PARAM_VALUE

j_bndg_per twomass_xsc 2MASS J banding Fourier Transf. period on this side of coadd. int 4 arcsec FIT_PARAM_VALUE

j_chif_ellf twomass_xsc 2MASS J % chi-fraction for elliptical fit to 3-sig isophote. real 4 FIT_PARAM_VALUE

j_cmsig twomass_psc 2MASS Corrected photometric uncertainty for the default J-band magnitude. real 4 mag SPECT_FLUX_VALUE

j_con_indx twomass_xsc 2MASS J concentration index r_75%/r_25%. real 4 PHYS_CONCENT_INDEX

j_d_area twomass_xsc 2MASS J 5-sigma to 3-sigma differential area. smallint 2 FIT_RESIDUAL

j_flg_10 twomass_xsc 2MASS J confusion flag for 10 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_15 twomass_xsc 2MASS J confusion flag for 15 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_20 twomass_xsc 2MASS J confusion flag for 20 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_25 twomass_xsc 2MASS J confusion flag for 25 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_30 twomass_xsc 2MASS J confusion flag for 30 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_40 twomass_xsc 2MASS J confusion flag for 40 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_5 twomass_xsc 2MASS J confusion flag for 5 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_50 twomass_xsc 2MASS J confusion flag for 50 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_60 twomass_xsc 2MASS J confusion flag for 60 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_7 twomass_sixx2_xsc 2MASS J confusion flag for 7 arcsec circular ap. mag smallint 2

j_flg_7 twomass_xsc 2MASS J confusion flag for 7 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_70 twomass_xsc 2MASS J confusion flag for 70 arcsec circular ap. mag. smallint 2 CODE_MISC

j_flg_c twomass_xsc 2MASS J confusion flag for Kron circular mag. smallint 2 CODE_MISC

j_flg_e twomass_xsc 2MASS J confusion flag for Kron elliptical mag. smallint 2 CODE_MISC

j_flg_fc twomass_xsc 2MASS J confusion flag for fiducial Kron circ. mag. smallint 2 CODE_MISC

j_flg_fe twomass_xsc 2MASS J confusion flag for fiducial Kron ell. mag. smallint 2 CODE_MISC

j_flg_i20c twomass_xsc 2MASS J confusion flag for 20mag/sq." iso. circ. mag. smallint 2 CODE_MISC

j_flg_i20e twomass_xsc 2MASS J confusion flag for 20mag/sq." iso. ell. mag. smallint 2 CODE_MISC

j_flg_i21c twomass_xsc 2MASS J confusion flag for 21mag/sq." iso. circ. mag. smallint 2 CODE_MISC

j_flg_i21e twomass_xsc 2MASS J confusion flag for 21mag/sq." iso. ell. mag. smallint 2 CODE_MISC

j_flg_j21fc twomass_xsc 2MASS J confusion flag for 21mag/sq." iso. fid. circ. mag. smallint 2 CODE_MISC

j_flg_j21fe twomass_xsc 2MASS J confusion flag for 21mag/sq." iso. fid. ell. mag. smallint 2 CODE_MISC

j_flg_k20fc twomass_xsc 2MASS J confusion flag for 20mag/sq." iso. fid. circ. mag. smallint 2 CODE_MISC

j_flg_k20fe twomass_sixx2_xsc 2MASS J confusion flag for 20mag/sq.″ iso. fid. ell. mag smallint 2

j_flg_k20fe twomass_xsc 2MASS J confusion flag for 20mag/sq." iso. fid. ell. mag. smallint 2 CODE_MISC

j_h twomass_sixx2_psc 2MASS The J-H color, computed from the J-band and H-band magnitudes (j_m and h_m, respectively) of the source. In cases where the first or second digit in rd_flg is equal to either "0", "4", "6", or "9", no color is computed because the photometry in one or both bands is of lower quality or the source is not detected. real 4

j_k twomass_sixx2_psc 2MASS The J-Ks color, computed from the J-band and Ks-band magnitudes (j_m and k_m, respectively) of the source. In cases where the first or third digit in rd_flg is equal to either "0", "4", "6", or "9", no color is computed because the photometry in one or both bands is of lower quality or the source is not detected. real 4

j_m twomass_psc 2MASS Default J-band magnitude real 4 mag SPECT_FLUX_VALUE

j_m twomass_sixx2_psc 2MASS J selected "default" magnitude real 4 mag

j_m_10 twomass_xsc 2MASS J 10 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_15 twomass_xsc 2MASS J 15 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_20 twomass_xsc 2MASS J 20 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_25 twomass_xsc 2MASS J 25 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_30 twomass_xsc 2MASS J 30 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_40 twomass_xsc 2MASS J 40 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_5 twomass_xsc 2MASS J 5 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_50 twomass_xsc 2MASS J 50 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_60 twomass_xsc 2MASS J 60 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_7 twomass_sixx2_xsc 2MASS J 7 arcsec radius circular aperture magnitude real 4 mag

j_m_7 twomass_xsc 2MASS J 7 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_70 twomass_xsc 2MASS J 70 arcsec radius circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_c twomass_xsc 2MASS J Kron circular aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_e twomass_xsc 2MASS J Kron elliptical aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_ext twomass_sixx2_xsc 2MASS J mag from fit extrapolation real 4 mag

j_m_ext twomass_xsc 2MASS J mag from fit extrapolation. real 4 mag SPECT_FLUX_VALUE

j_m_fc twomass_xsc 2MASS J fiducial Kron circular magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_fe twomass_xsc 2MASS J fiducial Kron ell. mag aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_i20c twomass_xsc 2MASS J 20mag/sq." isophotal circular ap. magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_i20e twomass_xsc 2MASS J 20mag/sq." isophotal elliptical ap. magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_i21c twomass_xsc 2MASS J 21mag/sq." isophotal circular ap. magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_i21e twomass_xsc 2MASS J 21mag/sq." isophotal elliptical ap. magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_j21fc twomass_xsc 2MASS J 21mag/sq." isophotal fiducial circ. ap. mag. real 4 mag SPECT_FLUX_VALUE

j_m_j21fe twomass_xsc 2MASS J 21mag/sq." isophotal fiducial ell. ap. magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_k20fc twomass_xsc 2MASS J 20mag/sq." isophotal fiducial circ. ap. mag. real 4 mag SPECT_FLUX_VALUE

j_m_k20fe twomass_sixx2_xsc 2MASS J 20mag/sq.″ isophotal fiducial ell. ap. magnitude real 4 mag

j_m_k20fe twomass_xsc 2MASS J 20mag/sq." isophotal fiducial ell. ap. magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_stdap twomass_psc 2MASS J-band "standard" aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_m_sys twomass_xsc 2MASS J system photometry magnitude. real 4 mag SPECT_FLUX_VALUE

j_mnsurfb_eff twomass_xsc 2MASS J mean surface brightness at the half-light radius. real 4 mag PHOT_SB_GENERAL

j_msig twomass_sixx2_psc 2MASS J "default" mag uncertainty real 4 mag

j_msig_10 twomass_xsc 2MASS J 1-sigma uncertainty in 10 arcsec circular ap. mag. real 4 mag ERROR

j_msig_15 twomass_xsc 2MASS J 1-sigma uncertainty in 15 arcsec circular ap. mag. real 4 mag ERROR

j_msig_20 twomass_xsc 2MASS J 1-sigma uncertainty in 20 arcsec circular ap. mag. real 4 mag ERROR

j_msig_25 twomass_xsc 2MASS J 1-sigma uncertainty in 25 arcsec circular ap. mag. real 4 mag ERROR

j_msig_30 twomass_xsc 2MASS J 1-sigma uncertainty in 30 arcsec circular ap. mag. real 4 mag ERROR

j_msig_40 twomass_xsc 2MASS J 1-sigma uncertainty in 40 arcsec circular ap. mag. real 4 mag ERROR

j_msig_5 twomass_xsc 2MASS J 1-sigma uncertainty in 5 arcsec circular ap. mag. real 4 mag ERROR

j_msig_50 twomass_xsc 2MASS J 1-sigma uncertainty in 50 arcsec circular ap. mag. real 4 mag ERROR

j_msig_60 twomass_xsc 2MASS J 1-sigma uncertainty in 60 arcsec circular ap. mag. real 4 mag ERROR

j_msig_7 twomass_sixx2_xsc 2MASS J 1-sigma uncertainty in 7 arcsec circular ap. mag real 4 mag

j_msig_7 twomass_xsc 2MASS J 1-sigma uncertainty in 7 arcsec circular ap. mag. real 4 mag ERROR

j_msig_70 twomass_xsc 2MASS J 1-sigma uncertainty in 70 arcsec circular ap. mag. real 4 mag ERROR

j_msig_c twomass_xsc 2MASS J 1-sigma uncertainty in Kron circular mag. real 4 mag ERROR

j_msig_e twomass_xsc 2MASS J 1-sigma uncertainty in Kron elliptical mag. real 4 mag ERROR

j_msig_ext twomass_sixx2_xsc 2MASS J 1-sigma uncertainty in mag from fit extrapolation real 4 mag

j_msig_ext twomass_xsc 2MASS J 1-sigma uncertainty in mag from fit extrapolation. real 4 mag ERROR

j_msig_fc twomass_xsc 2MASS J 1-sigma uncertainty in fiducial Kron circ. mag. real 4 mag ERROR

j_msig_fe twomass_xsc 2MASS J 1-sigma uncertainty in fiducial Kron ell. mag. real 4 mag ERROR

j_msig_i20c twomass_xsc 2MASS J 1-sigma uncertainty in 20mag/sq." iso. circ. mag. real 4 mag ERROR

j_msig_i20e twomass_xsc 2MASS J 1-sigma uncertainty in 20mag/sq." iso. ell. mag. real 4 mag ERROR

j_msig_i21c twomass_xsc 2MASS J 1-sigma uncertainty in 21mag/sq." iso. circ. mag. real 4 mag ERROR

j_msig_i21e twomass_xsc 2MASS J 1-sigma uncertainty in 21mag/sq." iso. ell. mag. real 4 mag ERROR

j_msig_j21fc twomass_xsc 2MASS J 1-sigma uncertainty in 21mag/sq." iso.fid.circ.mag. real 4 mag ERROR

j_msig_j21fe twomass_xsc 2MASS J 1-sigma uncertainty in 21mag/sq." iso.fid.ell.mag. real 4 mag ERROR

j_msig_k20fc twomass_xsc 2MASS J 1-sigma uncertainty in 20mag/sq." iso.fid.circ. mag. real 4 mag ERROR

j_msig_k20fe twomass_xsc 2MASS J 1-sigma uncertainty in 20mag/sq." iso.fid.ell.mag. real 4 mag ERROR

j_msig_stdap twomass_psc 2MASS Uncertainty in the J-band standard aperture magnitude. real 4 mag SPECT_FLUX_VALUE

j_msig_sys twomass_xsc 2MASS J 1-sigma uncertainty in system photometry mag. real 4 mag ERROR

j_msigcom twomass_psc 2MASS Combined, or total photometric uncertainty for the default J-band magnitude. real 4 mag SPECT_FLUX_VALUE

j_msigcom twomass_sixx2_psc 2MASS combined (total) J band photometric uncertainty real 4 mag

j_msnr10 twomass_scn 2MASS The estimated J-band magnitude at which SNR=10 is achieved for this scan. real 4 mag SPECT_FLUX_VALUE

j_msnr10 twomass_sixx2_scn 2MASS J mag at which SNR=10 is achieved, from j_psp and j_zp_ap real 4 mag

j_n_snr10 twomass_scn 2MASS Number of point sources at J-band with SNR>10 (instrumental mag <=15.8) int 4 NUMBER

j_n_snr10 twomass_sixx2_scn 2MASS number of J point sources with SNR>10 (instrumental m<=15.8) int 4

j_pchi twomass_xsc 2MASS J chi^2 of fit to rad. profile (LCSB: alpha scale len). real 4 FIT_PARAM_VALUE

j_peak twomass_xsc 2MASS J peak pixel brightness. real 4 mag PHOT_SB_GENERAL

j_perc_darea twomass_xsc 2MASS J 5-sigma to 3-sigma percent area change. smallint 2 FIT_PARAM

j_phi twomass_xsc 2MASS J angle to 3-sigma major axis (E of N). smallint 2 degrees POS_POS-ANG

j_psfchi twomass_psc 2MASS Reduced chi-squared goodness-of-fit value for the J-band profile-fit photometry made on the 1.3 s "Read_2" exposures. real 4 FIT_PARAM_VALUE

j_psp twomass_scn 2MASS J-band photometric sensitivity paramater (PSP). real 4 INST_SENSITIVITY

j_psp twomass_sixx2_scn 2MASS J photometric sensitivity param: j_shape_avg*(j_fbg_avg^.29) real 4

j_pts_noise twomass_scn 2MASS Base-10 logarithm of the mode of the noise distribution for all point source detections in the scan, where the noise is estimated from the measured J-band photometric errors and is expressed in units of mJy. real 4 INST_NOISE

j_pts_noise twomass_sixx2_scn 2MASS log10 of J band modal point src noise estimate real 4 logmJy

j_r_c twomass_xsc 2MASS J Kron circular aperture radius. real 4 arcsec EXTENSION_RAD

j_r_e twomass_xsc 2MASS J Kron elliptical aperture semi-major axis. real 4 arcsec EXTENSION_RAD

j_r_eff twomass_xsc 2MASS J half-light (integrated half-flux point) radius. real 4 arcsec EXTENSION_RAD

j_r_i20c twomass_xsc 2MASS J 20mag/sq." isophotal circular aperture radius. real 4 arcsec EXTENSION_RAD

j_r_i20e twomass_xsc 2MASS J 20mag/sq." isophotal elliptical ap. semi-major axis. real 4 arcsec EXTENSION_RAD

j_r_i21c twomass_xsc 2MASS J 21mag/sq." isophotal circular aperture radius. real 4 arcsec EXTENSION_RAD

j_r_i21e twomass_xsc 2MASS J 21mag/sq." isophotal elliptical ap. semi-major axis. real 4 arcsec EXTENSION_RAD

j_resid_ann twomass_xsc 2MASS J residual annulus background median. real 4 DN CODE_MISC

j_sc_1mm twomass_xsc 2MASS J 1st moment (score) (LCSB: super blk 2,4,8 SNR). real 4 CODE_MISC

j_sc_2mm twomass_xsc 2MASS J 2nd moment (score) (LCSB: SNRMAX - super SNR max). real 4 CODE_MISC

j_sc_msh twomass_xsc 2MASS J median shape score. real 4 CODE_MISC

j_sc_mxdn twomass_xsc 2MASS J mxdn (score) (LCSB: BSNR - block/smoothed SNR). real 4 CODE_MISC

j_sc_r1 twomass_xsc 2MASS J r1 (score). real 4 CODE_MISC

j_sc_r23 twomass_xsc 2MASS J r23 (score) (LCSB: TSNR - integrated SNR for r=15). real 4 CODE_MISC

j_sc_sh twomass_xsc 2MASS J shape (score). real 4 CODE_MISC

j_sc_vint twomass_xsc 2MASS J vint (score). real 4 CODE_MISC

j_sc_wsh twomass_xsc 2MASS J wsh (score) (LCSB: PSNR - peak raw SNR). real 4 CODE_MISC

j_seetrack twomass_xsc 2MASS J band seetracking score. real 4 CODE_MISC

j_sh0 twomass_xsc 2MASS J ridge shape (LCSB: BSNR limit). real 4 FIT_PARAM

j_shape_avg twomass_scn 2MASS J-band average seeing shape for scan. real 4 INST_SEEING

j_shape_avg twomass_sixx2_scn 2MASS J band average seeing shape for scan real 4

j_shape_rms twomass_scn 2MASS RMS-error of J-band average seeing shape. real 4 INST_SEEING

j_shape_rms twomass_sixx2_scn 2MASS rms of J band avg seeing shape for scan real 4

j_sig_sh0 twomass_xsc 2MASS J ridge shape sigma (LCSB: B2SNR limit). real 4 FIT_PARAM

j_snr twomass_psc 2MASS J-band "scan" signal-to-noise ratio. real 4 mag INST_NOISE

j_snr twomass_sixx2_psc 2MASS J band "scan" signal-to-noise ratio real 4

j_subst2 twomass_xsc 2MASS J residual background #2 (score). real 4 CODE_MISC

j_zp_ap twomass_scn 2MASS Photometric zero-point for J-band aperture photometry. real 4 mag PHOT_ZP

j_zp_ap twomass_sixx2_scn 2MASS J band ap. calibration photometric zero-point for scan real 4 mag

jCorr twompzPhotoz TWOMPZ J 20mag/sq." isophotal fiducial ell. ap. magnitude with Galactic dust correction {image primary HDU keyword: Jcorr} real 4 mag -0.9999995e9 phot.mag;em.IR.J

jCorrErr twompzPhotoz TWOMPZ J 1-sigma uncertainty in 20mag/sq." aperture {image primary HDU keyword: j_msig_k20fe} real 4 mag -0.9999995e9

jdate twomass_psc 2MASS The Julian Date of the source measurement accurate to +-30 seconds. float 8 Julian days TIME_DATE

jdate twomass_scn 2MASS Julian Date at beginning of scan. float 8 Julian days TIME_DATE

jdate twomass_sixx2_psc 2MASS julian date of source measurement to +/- 30 sec float 8 jdate

jdate twomass_sixx2_scn 2MASS Julian date beginning UT of scan data float 8 jdate

jdate twomass_xsc 2MASS Julian date of the source measurement accurate to +-3 minutes. float 8 Julian days TIME_DATE

junkSource JunkDetection PSSA Source of junk: 1=satellite track; 2=diffraction spike; 3=bright stellar halo tinyint 1 CLASS_CODE

junkSource JunkDetection SSA Source of junk: 1=satellite track; 2=diffraction spike; 3=bright stellar halo tinyint 1 CLASS_CODE

J
Name	Schema Table	Database	Description	Type	Length	Unit	Default Value	Unified Content Descriptor
j_2mrat	twomass_scn	2MASS	J-band average 2nd image moment ratio.	real	4			FIT_PARAM_VALUE
j_2mrat	twomass_sixx2_scn	2MASS	J band average 2nd image moment ratio for scan	real	4
j_5sig_ba	twomass_xsc	2MASS	J minor/major axis ratio fit to the 5-sigma isophote.	real	4			PHYS_AXIS-RATIO
j_5sig_phi	twomass_xsc	2MASS	J angle to 5-sigma major axis (E of N).	smallint	2	degrees		ERROR
j_5surf	twomass_xsc	2MASS	J central surface brightness (r<=5).	real	4	mag		PHOT_SB_GENERAL
j_ba	twomass_xsc	2MASS	J minor/major axis ratio fit to the 3-sigma isophote.	real	4			PHYS_AXIS-RATIO
j_back	twomass_xsc	2MASS	J coadd median background.	real	4			CODE_MISC
j_bisym_chi	twomass_xsc	2MASS	J bi-symmetric cross-correlation chi.	real	4			FIT_PARAM_VALUE
j_bisym_rat	twomass_xsc	2MASS	J bi-symmetric flux ratio.	real	4			PHOT_FLUX_RATIO
j_bndg_amp	twomass_xsc	2MASS	J banding maximum FT amplitude on this side of coadd.	real	4	DN		FIT_PARAM_VALUE
j_bndg_per	twomass_xsc	2MASS	J banding Fourier Transf. period on this side of coadd.	int	4	arcsec		FIT_PARAM_VALUE
j_chif_ellf	twomass_xsc	2MASS	J % chi-fraction for elliptical fit to 3-sig isophote.	real	4			FIT_PARAM_VALUE
j_cmsig	twomass_psc	2MASS	Corrected photometric uncertainty for the default J-band magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_con_indx	twomass_xsc	2MASS	J concentration index r_75%/r_25%.	real	4			PHYS_CONCENT_INDEX
j_d_area	twomass_xsc	2MASS	J 5-sigma to 3-sigma differential area.	smallint	2			FIT_RESIDUAL
j_flg_10	twomass_xsc	2MASS	J confusion flag for 10 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_15	twomass_xsc	2MASS	J confusion flag for 15 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_20	twomass_xsc	2MASS	J confusion flag for 20 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_25	twomass_xsc	2MASS	J confusion flag for 25 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_30	twomass_xsc	2MASS	J confusion flag for 30 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_40	twomass_xsc	2MASS	J confusion flag for 40 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_5	twomass_xsc	2MASS	J confusion flag for 5 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_50	twomass_xsc	2MASS	J confusion flag for 50 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_60	twomass_xsc	2MASS	J confusion flag for 60 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_7	twomass_sixx2_xsc	2MASS	J confusion flag for 7 arcsec circular ap. mag	smallint	2
j_flg_7	twomass_xsc	2MASS	J confusion flag for 7 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_70	twomass_xsc	2MASS	J confusion flag for 70 arcsec circular ap. mag.	smallint	2			CODE_MISC
j_flg_c	twomass_xsc	2MASS	J confusion flag for Kron circular mag.	smallint	2			CODE_MISC
j_flg_e	twomass_xsc	2MASS	J confusion flag for Kron elliptical mag.	smallint	2			CODE_MISC
j_flg_fc	twomass_xsc	2MASS	J confusion flag for fiducial Kron circ. mag.	smallint	2			CODE_MISC
j_flg_fe	twomass_xsc	2MASS	J confusion flag for fiducial Kron ell. mag.	smallint	2			CODE_MISC
j_flg_i20c	twomass_xsc	2MASS	J confusion flag for 20mag/sq." iso. circ. mag.	smallint	2			CODE_MISC
j_flg_i20e	twomass_xsc	2MASS	J confusion flag for 20mag/sq." iso. ell. mag.	smallint	2			CODE_MISC
j_flg_i21c	twomass_xsc	2MASS	J confusion flag for 21mag/sq." iso. circ. mag.	smallint	2			CODE_MISC
j_flg_i21e	twomass_xsc	2MASS	J confusion flag for 21mag/sq." iso. ell. mag.	smallint	2			CODE_MISC
j_flg_j21fc	twomass_xsc	2MASS	J confusion flag for 21mag/sq." iso. fid. circ. mag.	smallint	2			CODE_MISC
j_flg_j21fe	twomass_xsc	2MASS	J confusion flag for 21mag/sq." iso. fid. ell. mag.	smallint	2			CODE_MISC
j_flg_k20fc	twomass_xsc	2MASS	J confusion flag for 20mag/sq." iso. fid. circ. mag.	smallint	2			CODE_MISC
j_flg_k20fe	twomass_sixx2_xsc	2MASS	J confusion flag for 20mag/sq.″ iso. fid. ell. mag	smallint	2
j_flg_k20fe	twomass_xsc	2MASS	J confusion flag for 20mag/sq." iso. fid. ell. mag.	smallint	2			CODE_MISC
j_h	twomass_sixx2_psc	2MASS	The J-H color, computed from the J-band and H-band magnitudes (j_m and h_m, respectively) of the source. In cases where the first or second digit in rd_flg is equal to either "0", "4", "6", or "9", no color is computed because the photometry in one or both bands is of lower quality or the source is not detected.	real	4
j_k	twomass_sixx2_psc	2MASS	The J-Ks color, computed from the J-band and Ks-band magnitudes (j_m and k_m, respectively) of the source. In cases where the first or third digit in rd_flg is equal to either "0", "4", "6", or "9", no color is computed because the photometry in one or both bands is of lower quality or the source is not detected.	real	4
j_m	twomass_psc	2MASS	Default J-band magnitude	real	4	mag		SPECT_FLUX_VALUE
j_m	twomass_sixx2_psc	2MASS	J selected "default" magnitude	real	4	mag
j_m_10	twomass_xsc	2MASS	J 10 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_15	twomass_xsc	2MASS	J 15 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_20	twomass_xsc	2MASS	J 20 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_25	twomass_xsc	2MASS	J 25 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_30	twomass_xsc	2MASS	J 30 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_40	twomass_xsc	2MASS	J 40 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_5	twomass_xsc	2MASS	J 5 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_50	twomass_xsc	2MASS	J 50 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_60	twomass_xsc	2MASS	J 60 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_7	twomass_sixx2_xsc	2MASS	J 7 arcsec radius circular aperture magnitude	real	4	mag
j_m_7	twomass_xsc	2MASS	J 7 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_70	twomass_xsc	2MASS	J 70 arcsec radius circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_c	twomass_xsc	2MASS	J Kron circular aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_e	twomass_xsc	2MASS	J Kron elliptical aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_ext	twomass_sixx2_xsc	2MASS	J mag from fit extrapolation	real	4	mag
j_m_ext	twomass_xsc	2MASS	J mag from fit extrapolation.	real	4	mag		SPECT_FLUX_VALUE
j_m_fc	twomass_xsc	2MASS	J fiducial Kron circular magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_fe	twomass_xsc	2MASS	J fiducial Kron ell. mag aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_i20c	twomass_xsc	2MASS	J 20mag/sq." isophotal circular ap. magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_i20e	twomass_xsc	2MASS	J 20mag/sq." isophotal elliptical ap. magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_i21c	twomass_xsc	2MASS	J 21mag/sq." isophotal circular ap. magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_i21e	twomass_xsc	2MASS	J 21mag/sq." isophotal elliptical ap. magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_j21fc	twomass_xsc	2MASS	J 21mag/sq." isophotal fiducial circ. ap. mag.	real	4	mag		SPECT_FLUX_VALUE
j_m_j21fe	twomass_xsc	2MASS	J 21mag/sq." isophotal fiducial ell. ap. magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_k20fc	twomass_xsc	2MASS	J 20mag/sq." isophotal fiducial circ. ap. mag.	real	4	mag		SPECT_FLUX_VALUE
j_m_k20fe	twomass_sixx2_xsc	2MASS	J 20mag/sq.″ isophotal fiducial ell. ap. magnitude	real	4	mag
j_m_k20fe	twomass_xsc	2MASS	J 20mag/sq." isophotal fiducial ell. ap. magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_stdap	twomass_psc	2MASS	J-band "standard" aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_m_sys	twomass_xsc	2MASS	J system photometry magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_mnsurfb_eff	twomass_xsc	2MASS	J mean surface brightness at the half-light radius.	real	4	mag		PHOT_SB_GENERAL
j_msig	twomass_sixx2_psc	2MASS	J "default" mag uncertainty	real	4	mag
j_msig_10	twomass_xsc	2MASS	J 1-sigma uncertainty in 10 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_15	twomass_xsc	2MASS	J 1-sigma uncertainty in 15 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_20	twomass_xsc	2MASS	J 1-sigma uncertainty in 20 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_25	twomass_xsc	2MASS	J 1-sigma uncertainty in 25 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_30	twomass_xsc	2MASS	J 1-sigma uncertainty in 30 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_40	twomass_xsc	2MASS	J 1-sigma uncertainty in 40 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_5	twomass_xsc	2MASS	J 1-sigma uncertainty in 5 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_50	twomass_xsc	2MASS	J 1-sigma uncertainty in 50 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_60	twomass_xsc	2MASS	J 1-sigma uncertainty in 60 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_7	twomass_sixx2_xsc	2MASS	J 1-sigma uncertainty in 7 arcsec circular ap. mag	real	4	mag
j_msig_7	twomass_xsc	2MASS	J 1-sigma uncertainty in 7 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_70	twomass_xsc	2MASS	J 1-sigma uncertainty in 70 arcsec circular ap. mag.	real	4	mag		ERROR
j_msig_c	twomass_xsc	2MASS	J 1-sigma uncertainty in Kron circular mag.	real	4	mag		ERROR
j_msig_e	twomass_xsc	2MASS	J 1-sigma uncertainty in Kron elliptical mag.	real	4	mag		ERROR
j_msig_ext	twomass_sixx2_xsc	2MASS	J 1-sigma uncertainty in mag from fit extrapolation	real	4	mag
j_msig_ext	twomass_xsc	2MASS	J 1-sigma uncertainty in mag from fit extrapolation.	real	4	mag		ERROR
j_msig_fc	twomass_xsc	2MASS	J 1-sigma uncertainty in fiducial Kron circ. mag.	real	4	mag		ERROR
j_msig_fe	twomass_xsc	2MASS	J 1-sigma uncertainty in fiducial Kron ell. mag.	real	4	mag		ERROR
j_msig_i20c	twomass_xsc	2MASS	J 1-sigma uncertainty in 20mag/sq." iso. circ. mag.	real	4	mag		ERROR
j_msig_i20e	twomass_xsc	2MASS	J 1-sigma uncertainty in 20mag/sq." iso. ell. mag.	real	4	mag		ERROR
j_msig_i21c	twomass_xsc	2MASS	J 1-sigma uncertainty in 21mag/sq." iso. circ. mag.	real	4	mag		ERROR
j_msig_i21e	twomass_xsc	2MASS	J 1-sigma uncertainty in 21mag/sq." iso. ell. mag.	real	4	mag		ERROR
j_msig_j21fc	twomass_xsc	2MASS	J 1-sigma uncertainty in 21mag/sq." iso.fid.circ.mag.	real	4	mag		ERROR
j_msig_j21fe	twomass_xsc	2MASS	J 1-sigma uncertainty in 21mag/sq." iso.fid.ell.mag.	real	4	mag		ERROR
j_msig_k20fc	twomass_xsc	2MASS	J 1-sigma uncertainty in 20mag/sq." iso.fid.circ. mag.	real	4	mag		ERROR
j_msig_k20fe	twomass_xsc	2MASS	J 1-sigma uncertainty in 20mag/sq." iso.fid.ell.mag.	real	4	mag		ERROR
j_msig_stdap	twomass_psc	2MASS	Uncertainty in the J-band standard aperture magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_msig_sys	twomass_xsc	2MASS	J 1-sigma uncertainty in system photometry mag.	real	4	mag		ERROR
j_msigcom	twomass_psc	2MASS	Combined, or total photometric uncertainty for the default J-band magnitude.	real	4	mag		SPECT_FLUX_VALUE
j_msigcom	twomass_sixx2_psc	2MASS	combined (total) J band photometric uncertainty	real	4	mag
j_msnr10	twomass_scn	2MASS	The estimated J-band magnitude at which SNR=10 is achieved for this scan.	real	4	mag		SPECT_FLUX_VALUE
j_msnr10	twomass_sixx2_scn	2MASS	J mag at which SNR=10 is achieved, from j_psp and j_zp_ap	real	4	mag
j_n_snr10	twomass_scn	2MASS	Number of point sources at J-band with SNR>10 (instrumental mag <=15.8)	int	4			NUMBER
j_n_snr10	twomass_sixx2_scn	2MASS	number of J point sources with SNR>10 (instrumental m<=15.8)	int	4
j_pchi	twomass_xsc	2MASS	J chi^2 of fit to rad. profile (LCSB: alpha scale len).	real	4			FIT_PARAM_VALUE
j_peak	twomass_xsc	2MASS	J peak pixel brightness.	real	4	mag		PHOT_SB_GENERAL
j_perc_darea	twomass_xsc	2MASS	J 5-sigma to 3-sigma percent area change.	smallint	2			FIT_PARAM
j_phi	twomass_xsc	2MASS	J angle to 3-sigma major axis (E of N).	smallint	2	degrees		POS_POS-ANG
j_psfchi	twomass_psc	2MASS	Reduced chi-squared goodness-of-fit value for the J-band profile-fit photometry made on the 1.3 s "Read_2" exposures.	real	4			FIT_PARAM_VALUE
j_psp	twomass_scn	2MASS	J-band photometric sensitivity paramater (PSP).	real	4			INST_SENSITIVITY
j_psp	twomass_sixx2_scn	2MASS	J photometric sensitivity param: j_shape_avg*(j_fbg_avg^.29)	real	4
j_pts_noise	twomass_scn	2MASS	Base-10 logarithm of the mode of the noise distribution for all point source detections in the scan, where the noise is estimated from the measured J-band photometric errors and is expressed in units of mJy.	real	4			INST_NOISE
j_pts_noise	twomass_sixx2_scn	2MASS	log10 of J band modal point src noise estimate	real	4	logmJy
j_r_c	twomass_xsc	2MASS	J Kron circular aperture radius.	real	4	arcsec		EXTENSION_RAD
j_r_e	twomass_xsc	2MASS	J Kron elliptical aperture semi-major axis.	real	4	arcsec		EXTENSION_RAD
j_r_eff	twomass_xsc	2MASS	J half-light (integrated half-flux point) radius.	real	4	arcsec		EXTENSION_RAD
j_r_i20c	twomass_xsc	2MASS	J 20mag/sq." isophotal circular aperture radius.	real	4	arcsec		EXTENSION_RAD
j_r_i20e	twomass_xsc	2MASS	J 20mag/sq." isophotal elliptical ap. semi-major axis.	real	4	arcsec		EXTENSION_RAD
j_r_i21c	twomass_xsc	2MASS	J 21mag/sq." isophotal circular aperture radius.	real	4	arcsec		EXTENSION_RAD
j_r_i21e	twomass_xsc	2MASS	J 21mag/sq." isophotal elliptical ap. semi-major axis.	real	4	arcsec		EXTENSION_RAD
j_resid_ann	twomass_xsc	2MASS	J residual annulus background median.	real	4	DN		CODE_MISC
j_sc_1mm	twomass_xsc	2MASS	J 1st moment (score) (LCSB: super blk 2,4,8 SNR).	real	4			CODE_MISC
j_sc_2mm	twomass_xsc	2MASS	J 2nd moment (score) (LCSB: SNRMAX - super SNR max).	real	4			CODE_MISC
j_sc_msh	twomass_xsc	2MASS	J median shape score.	real	4			CODE_MISC
j_sc_mxdn	twomass_xsc	2MASS	J mxdn (score) (LCSB: BSNR - block/smoothed SNR).	real	4			CODE_MISC
j_sc_r1	twomass_xsc	2MASS	J r1 (score).	real	4			CODE_MISC
j_sc_r23	twomass_xsc	2MASS	J r23 (score) (LCSB: TSNR - integrated SNR for r=15).	real	4			CODE_MISC
j_sc_sh	twomass_xsc	2MASS	J shape (score).	real	4			CODE_MISC
j_sc_vint	twomass_xsc	2MASS	J vint (score).	real	4			CODE_MISC
j_sc_wsh	twomass_xsc	2MASS	J wsh (score) (LCSB: PSNR - peak raw SNR).	real	4			CODE_MISC
j_seetrack	twomass_xsc	2MASS	J band seetracking score.	real	4			CODE_MISC
j_sh0	twomass_xsc	2MASS	J ridge shape (LCSB: BSNR limit).	real	4			FIT_PARAM
j_shape_avg	twomass_scn	2MASS	J-band average seeing shape for scan.	real	4			INST_SEEING
j_shape_avg	twomass_sixx2_scn	2MASS	J band average seeing shape for scan	real	4
j_shape_rms	twomass_scn	2MASS	RMS-error of J-band average seeing shape.	real	4			INST_SEEING
j_shape_rms	twomass_sixx2_scn	2MASS	rms of J band avg seeing shape for scan	real	4
j_sig_sh0	twomass_xsc	2MASS	J ridge shape sigma (LCSB: B2SNR limit).	real	4			FIT_PARAM
j_snr	twomass_psc	2MASS	J-band "scan" signal-to-noise ratio.	real	4	mag		INST_NOISE
j_snr	twomass_sixx2_psc	2MASS	J band "scan" signal-to-noise ratio	real	4
j_subst2	twomass_xsc	2MASS	J residual background #2 (score).	real	4			CODE_MISC
j_zp_ap	twomass_scn	2MASS	Photometric zero-point for J-band aperture photometry.	real	4	mag		PHOT_ZP
j_zp_ap	twomass_sixx2_scn	2MASS	J band ap. calibration photometric zero-point for scan	real	4	mag
jCorr	twompzPhotoz	TWOMPZ	J 20mag/sq." isophotal fiducial ell. ap. magnitude with Galactic dust correction {image primary HDU keyword: Jcorr}	real	4	mag	-0.9999995e9	phot.mag;em.IR.J
jCorrErr	twompzPhotoz	TWOMPZ	J 1-sigma uncertainty in 20mag/sq." aperture {image primary HDU keyword: j_msig_k20fe}	real	4	mag	-0.9999995e9
jdate	twomass_psc	2MASS	The Julian Date of the source measurement accurate to +-30 seconds.	float	8	Julian days		TIME_DATE
jdate	twomass_scn	2MASS	Julian Date at beginning of scan.	float	8	Julian days		TIME_DATE
jdate	twomass_sixx2_psc	2MASS	julian date of source measurement to +/- 30 sec	float	8	jdate
jdate	twomass_sixx2_scn	2MASS	Julian date beginning UT of scan data	float	8	jdate
jdate	twomass_xsc	2MASS	Julian date of the source measurement accurate to +-3 minutes.	float	8	Julian days		TIME_DATE
junkSource	JunkDetection	PSSA	Source of junk: 1=satellite track; 2=diffraction spike; 3=bright stellar halo	tinyint	1			CLASS_CODE
junkSource	JunkDetection	SSA	Source of junk: 1=satellite track; 2=diffraction spike; 3=bright stellar halo	tinyint	1			CLASS_CODE

WFAU, Institute for Astronomy,
Royal Observatory, Blackford Hill
Edinburgh, EH9 3HJ, UK

mar@roe.ac.uk
22/11/2016

Glossary of SSA attributes

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

J