SDSS J125649.17+511802.8

All names: SDSS J125649.17+511802.8, GALEX J125649.2+511803, SDSS J125649.17+511802.9, WD 1254+515, Gaia DR2 1557498146761175808, USNO-A2.0 1350-08191787, Gaia DR3 1557498146761175808, Gaia EDR3 1557498146761175808, SDSS J125649.16+511802.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 56 49.15 (0.1) 12 56 49.17 12 56 49.15 (0.2) 12 56 49.15 12 56 49.18 (0.1) 12 56 49.17 12 56 48.60 12 56 49.17
Declination 51 18 02.56 (0.1) 51 18 02.84 51 18 02.57 (0.2) 51 18 02.56 51 18 02.87 (0.1) 51 18 02.85 51 17 59.64 51 18 02.89
Spectral type DA DA DA DA_auto DA DA DA
Effective temperature [K] 10504.0 10142.0 (330) 10604.0 (125) 10509.0 (123)
log(g) [cgs] 8.01 7.89 (0.07) 7.86 (0.1) 7.75 (0.1)
Mass [M] 0.608 0.537 (0.06) 0.484 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.5371
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] 4.14 (0.2) 4.24 (0.2) 4.14 4.14 (0.2)
Distance [pc] 241.46 (1e+01) 236.02 (13) 241.46 241.46 (1e+01)
Composition H
Proper motion (right ascension) [mas/yr] -15.50321159 (0.1) -15.49188348 (0.4) -15.503 (0.1) -11.2
Proper motion (declination) [mas/yr] -19.43923266 (0.2) -19.62357675 (0.3) -19.439 (0.2) -19.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.10 (0.3)
V magnitude
R magnitude 18.80 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.26 (0.03) 19.26 (0.03) 19.32 (0.05) 19.32 19.28 (0.05)
g magnitude 18.84 (0.009) 18.84 (0.009) 18.81 (0.02) 18.81 18.80 (0.02)
r magnitude 18.99 (0.01) 18.98 (0.01) 18.98 (0.02) 18.98 18.97 (0.02)
i magnitude 19.14 (0.02) 19.14 (0.02) 19.15 (0.03) 19.15 19.15 (0.03)
z magnitude 19.37 (0.06) 19.37 (0.06) 19.36 (0.06) 19.36 19.39 (0.06)
G magnitude 18.90 (0.02) 18.93 18.90 18.90 (0.003)
BP magnitude 18.97 (0.02) 18.98
RP magnitude 18.87 (0.03) 18.82
Pan g magnitude 18.87 (0.004)
Pan r magnitude 18.99 (0.009)
Pan i magnitude 19.14 (0.01)
Pan z magnitude 19.36 (0.03)
Pan y magnitude 19.43 (0.03)
E(B-V) 0.016

* 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.