EGGR 185

All names: PG 1143+321, UCAC2 42929906, UBV 10601, BPS BS 16077-0049, SDSS J114556.62+314929.6, ** GIC 102A, Gaia DR3 4021565827014024576, uvby98 980148007, Gaia EDR3 4021565827014024576, EGGR 185, WDJ114556.67+314930.69, SDSS J114556.61+314929.6, J1145+3149, ASCC 586522, US 2910, GCRV 21674, NLTT 28470, LSPM J1145+3149E, 2MASS J11455668+3149312, CBS 48, CSI+32-11433 2, Gaia DR2 4021565827014024576, WD 1143+32, EGGR 83, UBV M 53812, G 148-7, WD 1135+321, G148-7, USNO 234, GEN# +9.80148007, WDS J11460+3149A, GALEX J114556.7+314929, 11459+3149W, TIC 82311843, WD 1143+321

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 McCleery et al. 2020 Kilic et al. 2020 MWDD H Gaia DR2 Bedard et al. 2017 Stilism Limoges et al. 2015 Gianninas et al. 2011 Liebert et al. 2005 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 11 45 56.48 (0.02) 11 45 56.48 (0.04) 11 45 56.48 (0.04) 11 45 56.48 11 45 56.67 (0.02) 11 45 56.48 11 45 57.55
Declination 31 49 26.49 (0.02) 31 49 26.62 (0.05) 31 49 26.62 (0.05) 31 49 26.49 31 49 30.69 (0.02) 31 49 26.62 31 49 32.16
Spectral type DA DA DA DA DA DA DA DA DA DA3.1 DA3.5
Effective temperature [K] 16053.0 (116) 15735.0 (284) 16029.6 (185) 16053.0 (116) 14943.0 16332.0 (245) 15890.0 (265) 16290.0 (246) 14940.0 (231) 16012.0 (126)
log(g) [cgs] 8.03 (0.005) 8.00 (0.02) 8.03 (0.02) 8.03 (0.005) 7.95 8.17 (0.04) 8.05 (0.05) 8.17 (0.04) 7.93 (0.05) 8.02 (0.006)
Mass [M] 0.63 (0.005) 0.612 (0.01) 0.63 (0.005) 0.584 0.79 (0.2) 0.64 (0.03) 0.72 (0.03) 0.57 (0.03) 0.628 (0.005)
log(Luminosity) [L] -2.04 -2.08
Cooling age [Gyr] 0.1845 0.2089
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 31.91 (0.03) 31.91 (0.03) 31.91 (0.05) 31.91 (0.05) 31.60 (2) 31.91 31.91 (0.03) 31.91 (0.05) 30.00 (3)
Distance [pc] 31.33 (0.03) 31.34 (0.03) 31.34 (0.05) 31.34 (0.05) 30.20 (3) 31.60 (2) 28.00 31.00 31.33 31.33 (0.03) 31.34 (0.05) 33.33 (3)
Composition H H H H H
Proper motion (right ascension) [mas/yr] -154.1883178 (0.02) -153.9077321 (0.08) -154.188 (0.02) -153.9077321
Proper motion (declination) [mas/yr] -262.4732515 (0.03) -262.5019228 (0.1) -262.473 (0.03) -262.5019228
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes
B magnitude 13.66
V magnitude 13.65 13.60
R magnitude 14.00
I magnitude
J magnitude 14.01 (0.04)
H magnitude 13.98 (0.06)
K magnitude 14.03 (0.08)
u magnitude 13.77 (0.003) 13.77 (0.003) 13.77
g magnitude 13.64 (0.009) 13.64 (0.009) 13.61
r magnitude 13.84 (0.003) 13.84 (0.003) 13.86
i magnitude 14.13 (0.003) 14.13 (0.003) 14.11
z magnitude 14.42 (0.004) 14.42 (0.004) 14.43
G magnitude 13.71 (0.001) 13.73 13.73 13.71 13.71 (0.003) 13.73
BP magnitude 13.66 (0.001) 13.65 13.65
RP magnitude 13.83 (0.002) 13.84 13.84
Pan g magnitude 13.59 (0.03)
Pan r magnitude 13.88 (0.003)
Pan i magnitude 14.14 (0.007)
Pan z magnitude 14.40 (0.001)
Pan y magnitude 14.54 (0.008)
E(B-V) 0.001

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.