SDSS J002247.10+152831.9

All names: Gaia DR2 2792364397560292480, GALEX J002247.1+152832, SDSS J002247.10+152831.9, SDSS J002247.12+152831.90, SDSS J002247.11+152831.9, WD 0020+151, Gaia DR3 2792364397560292480, Gaia EDR3 2792364397560292480, SDSS J002247.12+152831.9

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 00 22 47.11 (0.4) 00 22 47.11 00 22 47.11 (0.6) 00 22 47.12 (0.4) 00 22 47.11 00 22 46.49 00 22 47.12
Declination 15 28 31.71 (0.3) 15 28 31.98 15 28 31.72 (0.5) 15 28 31.95 (0.3) 15 28 31.97 15 28 31.80 15 28 31.90
Spectral type DB DB DB DB DB DB
Effective temperature [K] 18529.0 14412.0 18408.0 (545) 18947.0 (976)
log(g) [cgs] 8.08 6.32 7.95 (0.2) 7.89 (0.2)
Mass [M] 0.644 0.117 0.532 (0.1)
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He) <-5.275
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] 0.79 (0.5) -0.60 (0.9) 0.79 (0.5)
Distance [pc] 1268.95 (747) 1268.87 (747)
Composition He
Proper motion (right ascension) [mas/yr] -5.408330169 (0.5) -2.139162355 (2) -5.408 (0.5) -3.7
Proper motion (declination) [mas/yr] -14.69155885 (0.5) -13.09139386 (1) -14.692 (0.5) -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 19.82 (0.03) 19.82 (0.03) 19.80 (0.03) 19.80 19.81 (0.03)
g magnitude 19.86 (0.02) 19.86 (0.02) 19.86 (0.02) 19.86 19.86 (0.02)
r magnitude 20.14 (0.02) 20.14 (0.02) 20.12 (0.03) 20.12 20.12 (0.03)
i magnitude 20.44 (0.04) 20.44 (0.04) 20.45 (0.04) 20.44 20.45 (0.04)
z magnitude 20.54 (0.2) 20.55 (0.2) 20.51 (0.2) 20.50 20.50 (0.1)
G magnitude 19.99 (0.06) 20.06 19.99 (0.005)
BP magnitude 19.82 (0.06) 19.76
RP magnitude 19.87 (0.09) 19.92
Pan g magnitude 19.87 (0.01)
Pan r magnitude 20.19 (0.02)
Pan i magnitude 20.42 (0.02)
Pan z magnitude 20.53 (0.07)
Pan y magnitude
E(B-V) 0.047

* 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.