SDSS J091234.45+351808.0

All names: Gaia EDR3 714359988831030656, SDSS J091234.45+351808.00, GALEX J091234.4+351807, Gaia DR2 714359988831030656, WD 0909+355, Gaia DR3 714359988831030656, SDSS J091234.44+351808.0, SDSS J091234.45+351808.0

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 09 12 34.45 (0.6) 09 12 34.45 09 12 34.45 (0.8) 09 12 34.45 (0.6) 09 12 34.45 09 12 34.66 09 12 34.45
Declination 35 18 07.92 (0.4) 35 18 08.04 35 18 07.93 (0.6) 35 18 08.07 (0.4) 35 18 08.05 35 18 02.16 35 18 08.04
Spectral type DB DB DB DB DB DB
Effective temperature [K] 21914.0 21085.0 15973.0 21239.0 (1137) 21275.0 (1239)
log(g) [cgs] 8.09 8.40 8.09 8.11 (0.2) 8.05 (0.2)
Mass [M] 0.655 0.846 0.642 0.625 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.1897
log(H/He) <-4.384
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] 2.74 (0.8) 1.47 (1) 2.74 (0.8)
Distance [pc] 365.60 (110) 679.45 (500) 365.60 (110)
Composition He
Proper motion (right ascension) [mas/yr] -2.725898178 (0.8) -3.260148845 (1) -2.726 (0.8)
Proper motion (declination) [mas/yr] -9.095456352 (0.7) -11.03271137 (1) -9.095 (0.7)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.09 (0.04) 20.09 (0.04) 20.14 (0.04) 20.13 20.11 (0.04)
g magnitude 20.22 (0.02) 20.23 (0.02) 20.23 (0.02) 20.23 20.21 (0.02)
r magnitude 20.57 (0.03) 20.57 (0.03) 20.56 (0.03) 20.56 20.56 (0.03)
i magnitude 20.93 (0.06) 20.93 (0.07) 20.95 (0.07) 20.95 20.93 (0.07)
z magnitude 20.94 (0.2) 20.96 (0.2) 20.96 (0.2) 20.96 20.94 (0.2)
G magnitude 20.40 (0.06) 20.49 20.40 (0.006)
BP magnitude 20.29 (0.06) 20.43
RP magnitude 20.47 (0.09) 20.38
Pan g magnitude 20.27 (0.01)
Pan r magnitude 20.61 (0.01)
Pan i magnitude 20.87 (0.02)
Pan z magnitude 20.99 (0.04)
Pan y magnitude 19.36 (0.2)
E(B-V) 0.019

* 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.