USNO-A2.0 1200-06450009

All names: SDSS J100544.90+364838.4, SDSS J100544.92+364838.3, LAMOST J100544.91+364838.4, SDSS J100544.91+364838.4, USNO-A2.0 1200-06450009, SDSS J100544.91+364838.5, Gaia EDR3 801934853032868096, Gaia DR2 801934853032868096, Gaia DR3 801934853032868096, SDSS J100544.91+364838.50, SDSS J100544.90+364838.5, GALEX J100544.9+364838

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Eisenstein et al. 2006 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 10 05 44.93 (0.2) 10 05 44.91 10 05 44.93 (0.2) 10 05 44.93 10 05 44.90 (0.2) 10 05 44.91 10 05 44.91
Declination 36 48 38.20 (0.1) 36 48 38.48 36 48 38.21 (0.2) 36 48 38.20 36 48 38.61 (0.1) 36 48 38.49 36 48 38.49
Spectral type DBA DB DBA HeSDB DBA DB
Effective temperature [K] 14495.0 15172.0 14189.0 15228.0 (1213) 15446.0 (279) 15018.0 (295)
log(g) [cgs] 7.87 7.96 7.87 8.01 (0.1) 8.32 (0.2) 8.39 (0.2)
Mass [M] 0.518 0.566 0.517 0.598 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.1944
log(H/He) -4.826
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] 2.99 (0.2) 2.87 (0.4) 2.99 2.99 (0.2)
Distance [pc] 334.46 (24) 348.80 (48) 334.46 334.46 (24)
Composition He
Proper motion (right ascension) [mas/yr] 21.39487722 (0.2) 21.42048985 (0.5) 21.395 (0.2) 24.9
Proper motion (declination) [mas/yr] -25.83417875 (0.2) -26.45292163 (0.4) -25.834 (0.2) -26.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.69 (0.02) 18.69 (0.02) 18.71 (0.03) 18.71 (0.03)
g magnitude 18.80 (0.008) 18.80 (0.008) 18.82 (0.03) 18.80 (0.03)
r magnitude 19.08 (0.01) 19.08 (0.01) 19.09 (0.02) 19.09 (0.02)
i magnitude 19.30 (0.02) 19.30 (0.02) 19.30 (0.02) 19.30 (0.02)
z magnitude 19.50 (0.07) 19.50 (0.07) 19.53 (0.07) 19.51 (0.07)
G magnitude 18.92 (0.02) 18.96 18.92 18.92 (0.003)
BP magnitude 18.88 (0.02) 18.84
RP magnitude 18.99 (0.04) 18.98
Pan g magnitude 18.84 (0.007)
Pan r magnitude 19.07 (0.009)
Pan i magnitude 19.32 (0.01)
Pan z magnitude 19.55 (0.02)
Pan y magnitude 19.58 (0.1)
E(B-V) 0.017

* 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.