SDSS J125433.77+423738.4

All names: Gaia DR3 1528468016130749440, SDSS J125433.77+423738.40, Gaia EDR3 1528468016130749440, GALEX J125433.8+423738, Gaia DR2 1528468016130749440, SDSS J125433.77+423738.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Kleinman et al. 2013
Right ascension 12 54 33.77 (0.4) 12 54 33.77 12 54 33.77 (0.6) 12 54 33.77 (0.4) 12 54 33.77
Declination 42 37 38.41 (0.5) 42 37 38.34 42 37 38.41 (0.5) 42 37 38.32 (0.5) 42 37 38.39
Spectral type DB DB DB
Effective temperature [K] 13758.0 15115.0 18398.0 14863.0 (767)
log(g) [cgs] 8.31 8.05 8.37 8.84 (0.5)
Mass [M] 0.78 0.621 0.826 1.12 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.2063
log(H/He) <-6.01
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] 0.75 (0.7) 1.46 (0.9) 0.75 (0.7)
Distance [pc] 1340.38 (1331) 683.49 (429) 1340.30 (1331)
Composition He
Proper motion (right ascension) [mas/yr] -4.40091931 (0.6) -5.376127801 (1) -4.401 (0.6)
Proper motion (declination) [mas/yr] 6.050057355 (0.6) 5.340529011 (1) 6.05 (0.6)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.34 (0.05) 20.33 (0.06) 20.33 (0.06)
g magnitude 20.42 (0.02) 20.44 (0.03) 20.44 (0.03)
r magnitude 20.64 (0.04) 20.65 (0.04) 20.65 (0.04)
i magnitude 20.94 (0.07) 20.95 (0.07) 20.95 (0.07)
z magnitude 21.44 (0.3) 21.44 (0.3) 21.44 (0.3)
G magnitude 20.52 (0.06) 20.60 20.52 (0.006)
BP magnitude 20.56 (0.06) 20.32
RP magnitude 20.25 (0.1) 20.37
Pan g magnitude 20.47 (0.02)
Pan r magnitude 20.68 (0.03)
Pan i magnitude 20.85 (0.02)
Pan z magnitude 20.94 (0.07)
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.