WD 0922+023

All names: USNO-A2.0 0900-06393433, LAMOST J092452.74+020712.2, GALEX J092452.7+020712, WD 0922+023, SDSS J092452.74+020712.3, SDSS J092452.73+020712.2, Gaia DR2 3844688422246115968, Gaia EDR3 3844688422246115968, Gaia DR3 3844688422246115968, SDSS J092452.74+020712.30, SDSS J092452.74+020712.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 24 52.71 (0.2) 09 24 52.74 09 24 52.71 (0.4) 09 24 52.71 09 24 52.74 (0.2) 09 24 52.74 09 24 51.38 09 24 52.74
Declination 02 07 12.80 (0.2) 02 07 12.28 02 07 12.79 (0.3) 02 07 12.80 02 07 12.25 (0.2) 02 07 12.28 02 07 08.40 02 07 12.26
Spectral type DB DB DB DB DB3.4 DB DB+MS
Effective temperature [K] 13878.0 13100.0 12646.0 14330.0 (97) 14116.0 (672) 15231.0 (147) 14322.0 (167)
log(g) [cgs] 8.01 8.13 8.12 8.00 (0) 8.04 (0.08) 8.49 (0.1) 8.33 (0.1)
Mass [M] 0.596 0.666 0.655 0.611 (0.07) 0.787 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.3967
log(H/He) -5.9 <-5.47
log(C/He)
log(Ca/He) <-8.02
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] 3.67 (0.2) 4.31 (0.5) 3.67 3.67 (0.2)
Distance [pc] 272.28 (15) 231.77 (26) 274.00 272.28 272.28 (15)
Composition He
Proper motion (right ascension) [mas/yr] -26.87699297 (0.2) -28.45499173 (1) -26.877 (0.2) -21.8
Proper motion (declination) [mas/yr] 34.84812707 (0.2) 34.26115608 (0.8) 34.848 (0.2) 25.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude 17.80 (0.3)
V magnitude
R magnitude 18.60 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.54 (0.02) 18.54 (0.02) 18.55 (0.02) 18.56 18.55 (0.02)
g magnitude 18.54 (0.007) 18.54 (0.007) 18.56 (0.03) 18.56 18.55 (0.03)
r magnitude 18.77 (0.01) 18.77 (0.01) 18.79 (0.02) 18.79 18.78 (0.02)
i magnitude 18.95 (0.01) 18.95 (0.01) 18.97 (0.02) 18.97 18.96 (0.02)
z magnitude 19.28 (0.08) 19.28 (0.08) 19.27 (0.08) 19.28 19.27 (0.08)
G magnitude 18.66 (0.02) 18.69 18.66 18.66 (0.003)
BP magnitude 18.63 (0.02) 18.61
RP magnitude 18.73 (0.03) 18.66
Pan g magnitude 18.59 (0.01)
Pan r magnitude 18.79 (0.008)
Pan i magnitude 19.03 (0.01)
Pan z magnitude 19.21 (0.02)
Pan y magnitude 19.31 (0.04)
E(B-V) 0.023

* 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.