GALEX 2697948651240556481

All names: SDSS J123108.33-011438.10, USNO-A2.0 0825-07761305, GALEX 2697948651240556481, SDSS J123108.33-011438.1, Gaia EDR3 3695519024031720448, SDSS J123108.31-011438.3, Gaia DR3 3695519024031720448, Gaia DR2 3695519024031720448

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 31 08.34 (0.1) 12 31 08.32 12 31 08.34 (0.1) 12 31 08.34 12 31 08.32 (0.1) 12 31 08.33
Declination -01 14 38.92 (0.07) -01 14 38.35 -01 14 38.91 (0.1) -01 14 38.92 -01 14 38.38 (0.1) -01 14 38.13
Spectral type DB:DC DB DB DB:DC DB
Effective temperature [K] 11639.0 11342.0 11462.0 (103) 11515.0 (258) 12183.0 (247)
log(g) [cgs] 7.95 8.04 8.00 (0) 8.08 (0.03) 8.67 (0.2)
Mass [M] 0.555 0.606 0.633 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.4716
log(H/He) -5.359 -5.43 (0.2)
log(C/He)
log(Ca/He) <-10.41
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] 6.86 (0.1) 6.78 (0.2) 6.86 6.78 (0.2)
Distance [pc] 145.86 (3) 147.46 (3) 149.00 145.86 147.46 (3)
Composition He
Proper motion (right ascension) [mas/yr] 16.69130261 (0.1) 16.67105658 (0.3) 16.671 (0.3)
Proper motion (declination) [mas/yr] -34.11141163 (0.1) -34.25940959 (0.2) -34.259 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.20 (0.3)
V magnitude
R magnitude 17.80 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.80 (0.01) 17.80 (0.01) 17.81 (0.03)
g magnitude 17.75 (0.005) 17.75 (0.005) 17.77 (0.03)
r magnitude 17.95 (0.006) 17.95 (0.006) 17.98 (0.02)
i magnitude 18.12 (0.009) 18.12 (0.009) 18.13 (0.03)
z magnitude 18.25 (0.03) 18.25 (0.03) 18.26 (0.03)
G magnitude 17.83 (0.01) 17.86 17.83 17.86 (0.001)
BP magnitude 17.83 (0.01) 17.80
RP magnitude 17.83 (0.01) 17.78
Pan g magnitude 17.79 (0.005)
Pan r magnitude 17.94 (0.006)
Pan i magnitude 18.14 (0.007)
Pan z magnitude 18.31 (0.01)
Pan y magnitude 18.42 (0.01)
E(B-V) 0.011

* 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.