SDSS J092248.39+073638.9

All names: Gaia DR3 587185874052506112, Gaia EDR3 587185874052506112, SDSS J092248.39+073638.9, SDSS J092248.40+073638.9, SDSS J092248.40+073639.0, GALEX J092248.4+073638, Gaia DR2 587185874052506112, WD 0920+078, SDSS J092248.40+073639.00

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) 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 22 48.39 (0.9) 09 22 48.40 09 22 48.39 (1) 09 22 48.40 (0.9) 09 22 48.40 09 22 48.53 09 22 48.40
Declination 07 36 38.92 (0.8) 07 36 38.97 07 36 38.92 (1) 07 36 39.00 (0.8) 07 36 38.97 07 36 32.04 07 36 38.97
Spectral type DB DB DB DB DB DB
Effective temperature [K] 17773.0 20770.0 19452.0 (1216) 18612.0 (900)
log(g) [cgs] 8.00 7.09 8.02 (0.3) 8.17 (0.2)
Mass [M] 0.593 0.266 0.691 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.0302
log(H/He) <-5.465
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] 1.65 (1) -0.60 (2) 1.65 (1)
Distance [pc] 606.46 (352) 606.46 (352)
Composition He
Proper motion (right ascension) [mas/yr] -3.978814377 (1) -4.323478845 (3) -3.979 (1) -3.3
Proper motion (declination) [mas/yr] -4.761931252 (0.8) -10.03840155 (3) -4.762 (0.8) -14.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.10 (0.04) 20.09 (0.04) 20.10 (0.04) 20.10 20.13 (0.04)
g magnitude 20.26 (0.02) 20.26 (0.02) 20.27 (0.02) 20.27 20.29 (0.02)
r magnitude 20.56 (0.03) 20.56 (0.04) 20.61 (0.04) 20.60 20.61 (0.03)
i magnitude 20.79 (0.06) 20.79 (0.07) 20.81 (0.06) 20.80 20.82 (0.06)
z magnitude 21.23 (0.4) 21.22 (0.4) 21.12 (0.3) 21.11 21.11 (0.3)
G magnitude 20.43 (0.07) 20.51 20.43 (0.009)
BP magnitude 20.34 (0.07) 20.59
RP magnitude 20.36 (0.2) 20.54
Pan g magnitude 20.33 (0.02)
Pan r magnitude 20.62 (0.02)
Pan i magnitude 20.84 (0.06)
Pan z magnitude 20.98 (0.09)
Pan y magnitude
E(B-V) 0.028

* 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.