EGGR 31

All names: Cl* Melotte 25 HZ 2, PLX 927.02, 2MASS J04124355+1151487, BPS BS 17571-0005, GALEX J041243.5+115147, HZ 2, uvby98 620020031, WD 0410+11, TIC 408000326, GEN# +6.20020031, WD 0410+117, UBV 4090, WDJ041243.56+115148.97, EGGR 31, GCRV 54842, CSI+11-04101, Gaia DR3 3304090857318319232, GSC 00674-00012, FB 36, LAMOST J041243.59+115147.9, USNO-B1.0 1018-00037881, KUV 04100+1144, Gaia EDR3 3304090857318319232, Gaia DR2 3304090857318319232

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Koester et al. 2009 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 04 12 43.62 (0.03) 04 12 43.62 (0.04) 04 12 43.62 04 12 43.56 (0.03) 04 12 43.62 04 12 52.18
Declination 11 51 47.52 (0.02) 11 51 47.57 (0.03) 11 51 47.52 11 51 48.98 (0.02) 11 51 47.57 11 51 48.96
Spectral type DA DA DA DA2.3 DA3
Effective temperature [K] 19637.0 21600.0 (335) 21074.0 (22) 22135.0 (213)
log(g) [cgs] 7.93 7.98 (0.05) 7.84 (0.004) 8.06 (0.008)
Mass [M] 0.586 0.61 (0.03) 0.662 (0.007)
log(Luminosity) [L]
Cooling age [Gyr] 0.0628
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] 23.04 (0.03) 23.06 (0.05) 23.04 23.04 (0.03) 23.06 (0.05) 8.00 (8)
Distance [pc] 43.40 (0.06) 43.37 (0.09) 45.00 43.40 43.40 (0.06) 43.37 (0.09) 125.00 (125)
Composition H H
Proper motion (right ascension) [mas/yr] 59.16386257 (0.04) 59.17912768 (0.1) 59.164 (0.04) 59.17912768
Proper motion (declination) [mas/yr] -91.01592483 (0.03) -90.67352356 (0.08) -91.016 (0.03) -90.67352356
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 13.79
V magnitude 13.86 13.88
R magnitude 13.98
I magnitude 14.09
J magnitude 14.34 (0.03)
H magnitude 14.53 (0.06)
K magnitude 14.44 (0.06)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 13.89 (0.001) 13.91 13.89 13.89 (0.003) 13.91
BP magnitude 13.80 (0.001) 13.76 13.76
RP magnitude 14.08 (0.0008) 14.08 14.08
Pan g magnitude 13.74 (0.004)
Pan r magnitude 14.10 (0.004)
Pan i magnitude 14.40 (0.002)
Pan z magnitude 14.67 (0.002)
Pan y magnitude 14.85 (0.003)
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.