\ Putative Comet Detection in 2MASS Spring 1999 PSC \ Column Definitions \ \ comet_id = Comet Identification \ j_m = Default J magnitude from PSC \ j_sig = Default J magnitude uncertainty from PSC \ h_m = Default H magnitude from PSC \ h_sig = Default H magnitude uncertainty from PSC \ k_m = Default Ks magnitude from PSC \ k_sig = Default Ks magnitude uncertainty from PSC \ VMag = Predicted V magnitude for asteroids at time of observation \ rd = rd_flg from PSC \ bl = bl_flg from PSC \ cc = cc_flg from PSC \ extd = extd_flg from PSC \ JulDat = Julian date of observations \ ra = (J2000) Right Ascension of 2MASS PSC source \ dec = (J2000) Declination of 2MASS PSC source \ emaj = Position error ellipse semimajor axis (arcsec) \ emin = Position error ellipse semiminor axis(arcsec) \ ang = Position error ellipse position angle (deg E of N) \ ra_pred = Predicted (J2000) right ascension of asteroid at JulDate \ dec_pred = Predicted (J2000) declination of asteroid at JulDate \ EMj = Semimajor axis of prediction error ellipse (arcsec) \ EMn = Semiminor axis of prediction error ellipse (arcsec) \ ErAng = Position angle E major axis of the pred. err ellipse (deg E of N) \ dx = RA (2MASS source) - ra_pred (predicted) in arcsec \ dy = DEC (2MASS source) - dec_pred (predicted) in arcsec \ mu = Proper motion (arcsec/sec) \ theta = Direction of proper motion (E of N) \ RHelio = Predicted heliocentric distance of asteroid \ RGeo = Predicted geocentric distance of asteroid \ Phase = Predicted sun-asteroid-earth angle \ MConf = Match confidence parameter \ n = Number of 2MASS sources within association threshold (max 9) \ id_o = Optical counterpar id from PSC \ b_m_opt = Catalog blue mag of associated optical source \ r_m_opt = Catalog red mag of associated optical source \ dist_o = Distance to associated optical source \ phi_opt = Position angle of 2MASS source relative to optical source \ o = Number of optical sources within 5 arcsec of 2MASS source \ date = 2MASS observation date (YYMMDD) \ h = 2MASS observation hemis \ scn = 2MASS scan number \ designation = 2MASS sexigesimal source designation \ | comet_id| j_m|j_sig| h_m|h_sig| k_m|k_sig| VMag| rd| bl| cc|extd| JulDate| ra| dec|emaj|emin|ang| ra_pred| dec_pred|EMj|EMn|ErAng| dx| dy| mu|theta| RHelio| RGeo| Phase|MConf|n|id_o|b_m_opt|r_m_opt|dist_o |phi_opt|o| date|h|scn| designation| | char | r| r| r| r| r| r| r|char|char|char|char| double| double| double| r| r| r| dbouble| double| r| r| r| r| r| r| r| double| double| double| r|i|char| r| r| r| r|i| i|c| i| char| 42P/Neujmin 3 11.871 0.027 11.644 0.033 11.561 0.031 22.936 222 111 000 0 2450781.95935 109.324508 18.953548 0.11 0.10 0 109.323009 18.953229 1.7 1.0 94.4 5.1 1.2 0.003 274.8 7.35587 6.58366 5.055 7.24 1 U 13.60 13.00 0.38 62 1 971129 N 116 0717178+185712 57P/du Toit-Neujmin-Delporte 11.957 0.027 11.514 0.031 11.347 0.035 22.456 222 111 000 0 2450775.94375 96.001647 19.845730 0.10 0.10 90 96.001081 19.845238 1.1 1.0 92.1 1.9 1.8 0.006 268.5 4.34045 3.49125 7.422 3.81 1 U 14.90 14.00 0.17 67 1 971123 N 77 0624004+195044