SDSS J085419.56+423948.5

All names: WD 0851+428, Gaia EDR3 913069846236062080, Gaia DR2 913069846236062080, SDSS J085419.57+423948.5, Gaia DR3 913069846236062080, GALEX J085419.5+423949, SDSS J085419.56+423948.5

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 08 54 19.56 (0.4) 08 54 19.56 08 54 19.56 (0.5) 08 54 19.56 (0.4) 08 54 19.57 08 54 19.80 08 54 19.57
Declination 42 39 48.42 (0.3) 42 39 48.58 42 39 48.42 (0.4) 42 39 48.61 (0.3) 42 39 48.54 42 39 46.44 42 39 48.53
Spectral type DA DA DA_auto DA DA DA
Effective temperature [K] 12834.0 13249.0 (425) 13295.0 (459)
log(g) [cgs] 8.14 7.98 (0.1) 8.06 (0.1)
Mass [M☉] 0.69 0.641 (0.09)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.3789
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] 2.65 (0.5) 2.47 (0.6) 2.65 (0.5)
Distance [pc] 376.91 (75) 405.03 (100) 376.90 (75)
Composition H
Proper motion (right ascension) [mas/yr] 0.602987794 (0.5) 0.949055812 (1) 0.603 (0.5) 10.5
Proper motion (declination) [mas/yr] -12.08257894 (0.4) -12.77837166 (0.8) -12.083 (0.4) -13.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.16 (0.05) 20.16 (0.04) 20.17 (0.05) 20.17 20.18 (0.05)
g magnitude 19.73 (0.01) 19.73 (0.01) 19.76 (0.02) 19.76 19.75 (0.02)
r magnitude 19.96 (0.02) 19.96 (0.02) 19.96 (0.03) 19.96 19.97 (0.03)
i magnitude 20.14 (0.04) 20.14 (0.04) 20.14 (0.04) 20.13 20.18 (0.04)
z magnitude 20.45 (0.1) 20.45 (0.1) 20.48 (0.1) 20.47 20.47 (0.1)
G magnitude 19.84 (0.06) 19.90 19.84 (0.005)
BP magnitude 19.84 (0.06) 19.82
RP magnitude 19.81 (0.09) 19.91
Pan g magnitude 19.72 (0.008)
Pan r magnitude 19.96 (0.02)
Pan i magnitude 20.18 (0.01)
Pan z magnitude 20.38 (0.03)
Pan y magnitude 20.34 (0.1)
E(B-V) 0.025

* 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.