USNO-A2.0 0900-06429515

All names: WD 0929+033, Gaia EDR3 3850868055550727296, Gaia DR3 3850868055550727296, GALEX J093138.3+031013, SDSS J093138.29+031012.70, SDSS J093138.28+031012.7, USNO-A2.0 0900-06429515, Gaia DR2 3850868055550727296, SDSS J093138.29+031012.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 31 38.30 (0.4) 09 31 38.28 09 31 38.30 (0.5) 09 31 38.29 (0.4) 09 31 38.29 09 31 38.06 09 31 38.29
Declination 03 10 12.80 (0.3) 03 10 12.78 03 10 12.80 (0.5) 03 10 12.77 (0.3) 03 10 12.77 03 10 08.04 03 10 12.70
Spectral type DB DB DB DB DB DB
Effective temperature [K] 20386.0 21433.0 12851.0 23162.0 (3566) 25352.0 (2678)
log(g) [cgs] 8.38 8.82 8.26 8.49 (0.2) 8.58 (0.2)
Mass [M] 0.832 1.104 0.749 0.957 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.4799
log(H/He) <-4.797
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] 2.52 (0.4) 3.06 (0.5) 2.52 (0.4)
Distance [pc] 396.74 (61) 326.62 (58) 396.73 (61)
Composition He
Proper motion (right ascension) [mas/yr] 9.306011883 (0.5) 7.41397118 (1) 9.306 (0.5) -6.8
Proper motion (declination) [mas/yr] 2.370210728 (0.3) 1.647808002 (1) 2.37 (0.3) 0.8
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.60 (0.3)
V magnitude
R magnitude 19.00 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.30 (0.03) 19.30 (0.03) 19.31 (0.04) 19.30 19.30 (0.04)
g magnitude 19.41 (0.01) 19.41 (0.01) 19.42 (0.03) 19.41 19.42 (0.03)
r magnitude 19.77 (0.02) 19.77 (0.02) 19.81 (0.02) 19.80 19.80 (0.02)
i magnitude 20.05 (0.03) 20.05 (0.03) 20.07 (0.03) 20.06 20.07 (0.03)
z magnitude 20.09 (0.1) 20.09 (0.1) 20.08 (0.1) 20.07 20.08 (0.1)
G magnitude 19.60 (0.04) 19.66 19.60 (0.004)
BP magnitude 19.56 (0.04) 19.44
RP magnitude 19.69 (0.07) 19.41
Pan g magnitude 19.46 (0.009)
Pan r magnitude 19.77 (0.01)
Pan i magnitude 20.05 (0.01)
Pan z magnitude 20.28 (0.06)
Pan y magnitude 20.14 (0.003)
E(B-V) 0.027

* 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.