SDSS J081029.20+341112.2

All names: SDSS J081029.20+341112.20, Gaia DR2 902780616423148800, SDSS J081029.19+341112.2, SDSS J081029.20+341112.2, Gaia DR3 902780616423148800, Gaia EDR3 902780616423148800, SDSS J081029.19+341112.0, GALEX J081029.2+341112

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 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 10 29.20 (0.3) 08 10 29.20 08 10 29.20 (0.3) 08 10 29.20 (0.3) 08 10 29.20
Declination 34 11 11.80 (0.2) 34 11 12.08 34 11 11.81 (0.2) 34 11 12.33 (0.2) 34 11 12.21
Spectral type DB DB DB DC
Effective temperature [K] 12275.0 12935.0 11285.0 13305.0 (509)
log(g) [cgs] 7.57 8.12 7.93 8.48 (0.4)
Mass [M] 0.373 0.658 0.543 0.884 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.4114
log(H/He) <-6.141
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] 3.28 (0.4) 3.08 (0.5) 3.28 (0.4)
Distance [pc] 304.69 (36) 324.63 (53) 304.69 (36)
Composition He
Proper motion (right ascension) [mas/yr] 1.934710346 (0.3) 1.730538616 (0.7) 1.935 (0.3)
Proper motion (declination) [mas/yr] -33.51299835 (0.2) -33.47938989 (0.4) -33.513 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.33 (0.03) 19.33 (0.03) 19.33 (0.03)
g magnitude 19.35 (0.01) 19.35 (0.01) 19.36 (0.03)
r magnitude 19.53 (0.01) 19.53 (0.01) 19.54 (0.02)
i magnitude 19.75 (0.02) 19.75 (0.02) 19.73 (0.04)
z magnitude 19.87 (0.07) 19.87 (0.07) 19.85 (0.09)
G magnitude 19.40 (0.03) 19.45 19.40 (0.004)
BP magnitude 19.41 (0.03) 19.47
RP magnitude 19.48 (0.05) 19.32
Pan g magnitude 19.36 (0.008)
Pan r magnitude 19.52 (0.006)
Pan i magnitude 19.72 (0.01)
Pan z magnitude 19.80 (0.06)
Pan y magnitude 19.77 (0.2)
E(B-V) 0.024

* 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.