SDSS J125721.74+512722.6

All names: SDSS J125721.75+512722.7, GALEX J125721.8+512722, WD 1255+517, SDSS J125721.74+512722.6, SDSS J125721.74+512722.7, Gaia DR2 1557524191442926336, SDSS J125721.73+512722.5, WDJ125721.77+512722.69, Gaia EDR3 1557524191442926336, Gaia DR3 1557524191442926336, J1257+5127

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 57 21.59 (0.1) 12 57 21.75 12 57 21.59 (0.1) 12 57 21.59 12 57 21.77 (0.1) 12 57 21.59 12 57 21.75 12 57 21.29 12 57 21.75
Declination 51 27 22.23 (0.1) 51 27 22.65 51 27 22.25 (0.1) 51 27 22.23 51 27 22.69 (0.1) 51 27 22.25 51 27 22.69 51 27 18.00 51 27 22.72
Spectral type DA DA DA DA DA DA DA DA_auto DA DA DA
Effective temperature [K] 7473.0 (52) 7535.0 (53) 7473.0 (52) 7473.0 7686.0 (199) 8106.0 (73) 7661.0 (77)
log(g) [cgs] 8.45 (0.02) 8.46 (0.02) 8.45 (0.02) 8.45 8.51 (0.04) 8.76 (0.2) 8.50 (0.1)
Mass [M] 0.883 (0.02) 0.893 (0.02) 0.883 (0.02) 0.883 0.923 (0.04) 0.903 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 3.2900 3.0880
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] 10.29 (0.2) 10.29 (0.2) 10.29 (0.2) 10.29 10.29 (0.2) 10.29 (0.2)
Distance [pc] 97.19 (2) 97.18 (2) 97.20 (2) 97.19 97.19 (2) 97.20 (2)
Composition H H H
Proper motion (right ascension) [mas/yr] -107.9539892 (0.1) -107.8283663 (0.3) -107.954 (0.1) -107.828 -108.6
Proper motion (declination) [mas/yr] -28.71481031 (0.1) -28.77221605 (0.3) -28.715 (0.1) -28.772 -29.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.43 (0.03) 19.41 (0.03) 19.43 (0.03) 19.41 (0.03) 19.45 (0.03) 19.45 19.44 (0.03)
g magnitude 18.97 (0.009) 18.96 (0.009) 18.97 (0.009) 18.97 (0.02) 18.97 18.97 (0.02)
r magnitude 18.86 (0.01) 18.86 (0.01) 18.85 (0.01) 18.86 (0.02) 18.86 18.86 (0.02)
i magnitude 18.87 (0.01) 18.87 (0.01) 18.82 (0.01) 18.87 (0.02) 18.87 18.87 (0.02)
z magnitude 18.91 (0.04) 18.91 (0.04) 18.96 (0.04) 18.88 (0.04) 18.88 18.91 (0.04)
G magnitude 18.81 (0.02) 18.85 18.81 18.81 (0.003) 18.85
BP magnitude 18.96 (0.02) 18.89 18.89
RP magnitude 18.59 (0.02) 18.56 18.56
Pan g magnitude 18.96 (0.005) 18.96 (0.004)
Pan r magnitude 18.84 (0.007) 18.84 (0.008)
Pan i magnitude 18.87 (0.005) 18.87 (0.005)
Pan z magnitude 18.95 (0.009) 18.95 (0.01)
Pan y magnitude 18.93 (0.01) 18.93 (0.02)
E(B-V) 0.007

* 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.