GALEX 2503018566919396429

All names: SDSS J000122.51+235934.20, USNO-A2.0 1125-00009501, SDSS J000122.51+235934.2, Gaia DR2 2848447668194928000, GALEX 2503018566919396429, Gaia DR3 2848447668194928000, Gaia EDR3 2848447668194928000

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) MWDD HE Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 00 01 22.49 (0.6) 00 01 22.50 00 01 22.49 (1) 00 01 22.50 (1) 00 01 22.51
Declination 23 59 34.00 (0.4) 23 59 34.19 23 59 34.00 (0.6) 23 59 34.24 (0.6) 23 59 34.17
Spectral type DB: DB DB: DB
Effective temperature [K] 12339.0 9319.0 12362.0 (418)
log(g) [cgs] 6.88 8.31 7.66 (0.4)
Mass [M] 0.194 0.775
log(Luminosity) [L]
Cooling age [Gyr] 1.1620
log(H/He) <-5.672
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] 2.11 (0.7) 3.23 (1) 3.23 (1)
Distance [pc] 473.53 (162) 309.73 (142) 309.73 (142)
Composition He
Proper motion (right ascension) [mas/yr] -12.65997494 (0.9) -8.40762013 (3) -8.408 (3)
Proper motion (declination) [mas/yr] -14.44842039 (0.4) -15.62260009 (1) -15.623 (1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.30 (0.3)
V magnitude
R magnitude 19.30 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.52 (0.05) 20.60 (0.06) 20.60 (0.06)
g magnitude 20.37 (0.02) 20.43 (0.03) 20.43 (0.03)
r magnitude 20.43 (0.03) 20.53 (0.03) 20.53 (0.03)
i magnitude 20.50 (0.04) 20.58 (0.04) 20.58 (0.04)
z magnitude 20.66 (0.2) 20.70 (0.2) 20.70 (0.2)
G magnitude 20.37 (0.1) 20.45 20.45 (0.01)
BP magnitude 20.51 (0.1) 20.36
RP magnitude 19.96 (0.09) 20.09
Pan g magnitude 20.41 (0.01)
Pan r magnitude 20.47 (0.02)
Pan i magnitude 20.61 (0.03)
Pan z magnitude 20.63 (0.05)
Pan y magnitude 20.52 (0.2)
E(B-V) 0.055

* 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.