SDSS J085253.92+000739.2

All names: Gaia DR3 3074614873566843008, GALEX J085253.9+000739, SDSS J085253.92+000739.23, Gaia EDR3 3074614873566843008, SDSS J085253.92+000739.2, Gaia DR2 3074614873566843008, SDSS J085253.91+000739.2

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 52 53.92 (0.2) 08 52 53.92 08 52 53.92 (0.3) 08 52 53.92 (0.2)
Declination 00 07 39.23 (0.1) 00 07 39.22 00 07 39.23 (0.2) 00 07 39.17 (0.1)
Spectral type DB DB DB DB+MS
Effective temperature [K] 22862.0 23076.0 18389.0 22976.0 (535) 22196.0 (300)
log(g) [cgs] 8.01 8.17 7.98 7.81 (0.06) 7.93 (0.005)
Mass [M] 0.607 0.703 0.582 0.521 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.0928
log(H/He) <-4.616 <-3.29
log(C/He)
log(Ca/He) <-4.0
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] 1.78 (0.3) 2.06 (0.3) 1.78 (0.3)
Distance [pc] 560.73 (83) 486.15 (82) 606.00 560.73 (83)
Composition He
Proper motion (right ascension) [mas/yr] 1.249182092 (0.3) 2.327906926 (0.6) 1.249 (0.3)
Proper motion (declination) [mas/yr] 3.437257584 (0.2) 3.490193643 (0.3) 3.437 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.94 (0.02) 18.94 (0.02) 18.94 (0.02)
g magnitude 19.04 (0.009) 19.04 (0.01) 19.04 (0.009)
r magnitude 19.41 (0.01) 19.41 (0.01) 19.41 (0.01)
i magnitude 19.71 (0.02) 19.71 (0.02) 19.71 (0.02)
z magnitude 20.11 (0.1) 20.11 (0.1) 20.11 (0.1)
G magnitude 19.19 (0.02) 19.24 19.19 (0.004)
BP magnitude 19.09 (0.02) 19.06
RP magnitude 19.58 (0.04) 19.43
Pan g magnitude 19.07 (0.01)
Pan r magnitude 19.38 (0.009)
Pan i magnitude 19.68 (0.01)
Pan z magnitude 19.92 (0.01)
Pan y magnitude 19.94 (0.1)
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.