SDSS J081040.75+191811.9

All names: SDSS J081040.75+191812.0, SDSS J081040.75+191811.9, Gaia EDR3 669563686091897216, SDSS J081040.75+191811.95, Gaia DR3 669563686091897216, GALEX J081040.7+191812, Gaia DR2 669563686091897216

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 08 10 40.75 (0.2) 08 10 40.76 08 10 40.75 (0.2) 08 10 40.76 (0.2)
Declination 19 18 11.95 (0.1) 19 18 11.99 19 18 11.95 (0.1) 19 18 11.97 (0.1)
Spectral type DBA DBA DBA DB
Effective temperature [K] 23192.0 19020.0 15890.0 20335.0 (281) 22140.0 (508)
log(g) [cgs] 8.02 7.93 7.69 7.91 (0.05) 7.95 (0.04)
Mass [M] 0.613 0.559 0.431 0.574 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.1025
log(H/He) -2 -2.84 (0.2)
log(C/He)
log(Ca/He) <-4.64
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] 2.54 (0.2) 2.39 (0.3) 2.54 (0.2)
Distance [pc] 393.53 (31) 418.86 (55) 437.00 393.53 (31)
Composition He
Proper motion (right ascension) [mas/yr] -12.35012628 (0.2) -12.41721822 (0.5) -12.35 (0.2)
Proper motion (declination) [mas/yr] -1.382394929 (0.1) -1.23218287 (0.3) -1.382 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.54 (0.02) 18.54 (0.02) 18.55 (0.02)
g magnitude 18.65 (0.008) 18.65 (0.01) 18.65 (0.008)
r magnitude 18.93 (0.01) 18.93 (0.01) 18.93 (0.01)
i magnitude 19.23 (0.01) 19.23 (0.01) 19.23 (0.01)
z magnitude 19.53 (0.06) 19.53 (0.06) 19.53 (0.06)
G magnitude 18.79 (0.02) 18.83 18.79 (0.004)
BP magnitude 18.76 (0.02) 18.66
RP magnitude 18.89 (0.05) 18.84
Pan g magnitude 18.68 (0.01)
Pan r magnitude 18.96 (0.006)
Pan i magnitude 19.25 (0.009)
Pan z magnitude 19.46 (0.02)
Pan y magnitude 19.60 (0.06)
E(B-V) 0.022

* 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.