SDSS J083231.47+443337.1

All names: Gaia EDR3 917768815335524224, WD 0829+447, GALEX J083231.5+443337, Gaia DR3 917768815335524224, SDSS J083231.47+443337.10, Gaia DR2 917768815335524224, SDSS J083231.47+443337.1

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 08 32 31.46 (0.3) 08 32 31.47 08 32 31.46 (0.4) 08 32 31.47 (0.3) 08 32 31.48 08 32 30.96 08 32 31.47
Declination 44 33 37.03 (0.3) 44 33 37.18 44 33 37.03 (0.3) 44 33 37.10 (0.3) 44 33 37.11 44 33 35.28 44 33 37.09
Spectral type DB DB DB DB DB DB
Effective temperature [K] 18746.0 19235.0 15320.0 20597.0 (699) 20282.0 (767)
log(g) [cgs] 8.32 7.66 7.36 8.53 (0.1) 8.45 (0.2)
Mass [M] 0.795 0.428 0.308 0.871 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 0.0917
log(H/He) -3.652
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] 1.28 (0.5) 1.16 (0.6) 1.28 (0.5)
Distance [pc] 779.02 (292) 858.99 (435) 779.00 (292)
Composition He
Proper motion (right ascension) [mas/yr] -9.295706687 (0.5) -8.213464782 (0.9) -9.296 (0.5) -6.8
Proper motion (declination) [mas/yr] -4.604457158 (0.4) -5.789136896 (0.7) -4.604 (0.4) -9.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.68 (0.03) 19.68 (0.03) 19.71 (0.03) 19.71 19.72 (0.03)
g magnitude 19.76 (0.01) 19.76 (0.01) 19.81 (0.02) 19.81 19.81 (0.02)
r magnitude 20.11 (0.02) 20.11 (0.02) 20.15 (0.02) 20.15 20.16 (0.02)
i magnitude 20.33 (0.04) 20.33 (0.04) 20.38 (0.04) 20.37 20.38 (0.04)
z magnitude 20.39 (0.1) 20.39 (0.1) 20.41 (0.1) 20.40 20.41 (0.1)
G magnitude 19.97 (0.03) 20.02 19.97 (0.005)
BP magnitude 19.87 (0.03) 19.89
RP magnitude 20.14 (0.08) 20.08
Pan g magnitude 19.84 (0.02)
Pan r magnitude 20.15 (0.02)
Pan i magnitude 20.40 (0.02)
Pan z magnitude 20.58 (0.06)
Pan y magnitude 19.66 (0.2)
E(B-V) 0.029

* 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.