SDSS J125702.38+231812.8

All names: Gaia DR2 3956644544476440320, Gaia EDR3 3956644544476440320, Gaia DR3 3956644544476440320, GALEX J125702.4+231813, SDSS J125702.38+231812.8

Parameter Unit Gaia EDR3 Stilism Vincent et al. 2024 Simbad
Right ascension 12 57 02.39 (0.2) 12 57 02.39 12 57 02.38 (0.2)
Declination 23 18 12.93 (0.2) 23 18 12.93 23 18 12.81 (0.2)
Spectral type DB DB
Effective temperature [K] 12856.0 (661)
log(g) [cgs] 8.23 (0.08)
Mass [M☉] 0.728 (0.07)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 4.39 (0.2) 4.39 4.39 (0.2)
Distance [pc] 227.99 (13) 227.99 227.99 (13)
Composition
Proper motion (right ascension) [mas/yr] 8.158 (0.3) 8.158 (0.3)
Proper motion (declination) [mas/yr] 6.886 (0.3) 6.886 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.73 (0.02)
g magnitude 18.71 (0.008)
r magnitude 18.91 (0.01)
i magnitude 19.10 (0.02)
z magnitude 19.30 (0.05)
G magnitude 18.79 (0.004) 18.79 18.79 (0.004)
BP magnitude 18.74 (0.02)
RP magnitude 18.84 (0.04)
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
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.