SDSS J125607.24+155115.1

All names: SDSS J125607.24+155115.1, GALEX J125607.2+155114, Gaia EDR3 3931506719368273792, SDSS J125607.24+155115.2, J1256+1551, WDJ125607.26+155115.33, Gaia DR3 3931506719368273792, SDSS J125607.23+155115.2, Gaia DR2 3931506719368273792, ULAS J125607.22+155115.1

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 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 56 07.17 (0.1) 12 56 07.24 12 56 07.18 (0.1) 12 56 07.17 12 56 07.26 (0.1) 12 56 07.18 12 56 07.24
Declination 15 51 14.84 (0.07) 15 51 15.22 15 51 14.85 (0.09) 15 51 14.84 15 51 15.32 (0.07) 15 51 14.85 15 51 15.20
Spectral type DA DA DA DA DA DA DA DA
Effective temperature [K] 8643.0 (98) 8924.0 (90) 8644.0 (98) 8686.0 9075.0 (155) 8702.0 (38)
log(g) [cgs] 8.39 (0.02) 8.45 (0.02) 8.38 (0.02) 8.39 8.47 (0.03) 8.51 (0.05)
Mass [M] 0.843 (0.02) 0.882 (0.02) 0.839 (0.02) 0.845 0.896 (0.02) 0.91 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 1.8900 1.7080
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] 12.48 (0.1) 12.43 (0.1) 12.43 (0.2) 12.48 12.48 (0.1) 12.43 (0.2)
Distance [pc] 80.16 (0.8) 80.45 (1) 80.48 (1) 80.16 80.16 (0.8) 80.48 (1)
Composition H H H
Proper motion (right ascension) [mas/yr] -78.42381042 (0.1) -78.32252673 (0.3) -78.424 (0.1) -78.32252673
Proper motion (declination) [mas/yr] -30.29734781 (0.2) -30.51303744 (0.2) -30.297 (0.2) -30.51303744
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.60
V magnitude
R magnitude 17.90
I magnitude
J magnitude 17.57 (0.04) 17.56 (0.04)
H magnitude 17.43 (0.04) 17.43 (0.04)
K magnitude 17.45 (0.1) 17.45 (0.1)
u magnitude 18.23 (0.01) 18.23 (0.01) 18.23 (0.01) 18.49 (0.01) 18.23 (0.03)
g magnitude 17.85 (0.006) 17.85 (0.006) 19.22 (0.01) 17.86 (0.02)
r magnitude 17.84 (0.006) 17.84 (0.006) 17.85 (0.006) 17.87 (0.02)
i magnitude 17.89 (0.008) 17.89 (0.008) 17.89 (0.008) 17.86 (0.02)
z magnitude 18.04 (0.03) 18.04 (0.03) 21.10 (0.4) 18.06 (0.03)
G magnitude 17.78 (0.009) 17.81 17.78 17.78 (0.003) 17.81
BP magnitude 17.87 (0.009) 17.87 17.87
RP magnitude 17.60 (0.01) 17.61 17.61
Pan g magnitude 17.85 (0.006) 17.85 (0.007)
Pan r magnitude 17.86 (0.004) 17.86 (0.004)
Pan i magnitude 17.91 (0.007) 17.91 (0.007)
Pan z magnitude 18.03 (0.009) 18.03 (0.008)
Pan y magnitude 18.10 (0.04) 18.10 (0.04)
E(B-V) 0.003

* 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.