Gaia DR2 749766221750309632

All names: USNO-B1.0 1249-00180410, WDJ103022.22+345602.23, WDJ103022.22+345602.24, LSPM J1030+3456, SDSS J103022.18+345601.3, SDSS J103022.19+345601.4, Gaia DR2 749766221750309632, Gaia EDR3 749766221750309632, Gaia DR3 749766221750309632

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 10 30 22.08 (0.2) 10 30 22.08 10 30 22.08 10 30 22.22 (0.2) 10 30 22.08
Declination 34 55 58.84 (0.2) 34 55 58.95 34 55 58.84 34 56 02.25 (0.2) 34 55 58.95
Spectral type DC DA DA
Effective temperature [K] 5420.0 (56) 5679.0 5409.0 5582.0 (104)
log(g) [cgs] 7.94 (0.03) 8.13 7.96 8.04 (0.05)
Mass [M] 0.532 (0.03) 0.666 0.545 0.61 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 3.7430 3.8810
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 12.15 (0.2) 12.36 (0.3) 12.15 12.15 (0.2) 12.36 (0.3)
Distance [pc] 82.30 (2) 80.89 (2) 82.30 82.30 (2) 80.89 (2)
Composition He
Proper motion (right ascension) [mas/yr] -113.8814166 (0.2) -113.6736635 (0.5) -113.881 (0.2) -113.6736635
Proper motion (declination) [mas/yr] -212.9262304 (0.2) -212.4387994 (0.5) -212.926 (0.2) -212.4387994
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 20.10
V magnitude
R magnitude 18.80
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.38 (0.06) 20.41 (0.05)
g magnitude 19.45 (0.01) 19.44 (0.01)
r magnitude 18.98 (0.01) 18.98 (0.01)
i magnitude 18.80 (0.01) 18.80 (0.01)
z magnitude 18.70 (0.03) 18.77 (0.03)
G magnitude 18.98 (0.03) 19.02 18.98 18.98 (0.004) 19.02
BP magnitude 19.42 (0.03) 19.35 19.35
RP magnitude 18.45 (0.03) 18.43 18.43
Pan g magnitude 19.37 (0.01)
Pan r magnitude 18.96 (0.02)
Pan i magnitude 18.81 (0.008)
Pan z magnitude 18.77 (0.01)
Pan y magnitude 18.76 (0.02)
E(B-V) 0.003

* 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.