SDSS J125650.43+452922.2

All names: WD 1254+457, Gaia EDR3 1530735694441212800, SDSS J125650.43+452922.2, Gaia DR2 1530735694440567808, SDSS J125650.44+452922.2, Gaia DR3 1530735694441212800, GALEX J125650.4+452922

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 56 50.46 (0.2) 12 56 50.43 12 56 50.46 (0.3) 12 56 50.43 (0.2) 12 56 50.44 12 56 50.33 12 56 50.44
Declination 45 29 21.97 (0.2) 45 29 22.25 45 29 21.98 (0.3) 45 29 22.36 (0.2) 45 29 22.24 45 29 17.52 45 29 22.24
Spectral type DA DA DA_auto DA DA DA
Effective temperature [K] 14754.0 18653.0 (566) 18743.0 (565)
log(g) [cgs] 7.19 8.08 (0.1) 8.11 (0.1)
Mass [M☉] 0.283 0.679 (0.09)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.0882
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 1.50 (0.3) 1.16 (0.5) 1.50 (0.3)
Distance [pc] 664.92 (152) 862.38 (347) 664.94 (152)
Composition H
Proper motion (right ascension) [mas/yr] 19.7457378 (0.3) 19.33285482 (0.5) 19.746 (0.3) 21.9
Proper motion (declination) [mas/yr] -24.59803371 (0.3) -25.35373622 (0.6) -24.598 (0.3) -22.5
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) 19.83 (0.04) 19.83 19.85 (0.04)
g magnitude 19.65 (0.01) 19.64 (0.01) 19.70 (0.03) 19.69 19.69 (0.03)
r magnitude 20.02 (0.02) 20.02 (0.02) 20.01 (0.03) 20.01 20.01 (0.03)
i magnitude 20.27 (0.03) 20.27 (0.03) 20.27 (0.03) 20.27 20.27 (0.03)
z magnitude 20.30 (0.1) 20.30 (0.1) 20.29 (0.1) 20.28 20.28 (0.1)
G magnitude 19.84 (0.05) 19.89 19.84 (0.004)
BP magnitude 19.72 (0.05) 19.69
RP magnitude 19.90 (0.06) 19.87
Pan g magnitude 19.71 (0.01)
Pan r magnitude 19.99 (0.02)
Pan i magnitude 20.30 (0.02)
Pan z magnitude 20.49 (0.05)
Pan y magnitude 20.64 (0.2)
E(B-V) 0.018

* 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.