SDSS J091206.50+383711.7

All names: GALEX J091206.4+383712, SDSS J091206.50+383711.7, Gaia DR3 812144333892640640, Gaia DR2 812144333892640640, Gaia EDR3 812144333892640640, SDSS J091206.49+383711.7, WD 0908+388

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 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 09 12 06.45 (0.2) 09 12 06.50 09 12 06.45 (0.2) 09 12 06.45 09 12 06.50 (0.2) 09 12 06.50 09 12 05.83 09 12 06.50
Declination 38 37 11.90 (0.1) 38 37 11.74 38 37 11.89 (0.2) 38 37 11.90 38 37 11.66 (0.1) 38 37 11.72 38 37 09.84 38 37 11.74
Spectral type DA DA DA DA DA_auto DA DA DA
Effective temperature [K] 10497.0 11420.0 (170) 10633.0 (282) 11198.0 (102) 11101.0 (110)
log(g) [cgs] 7.12 8.28 (0.08) 7.14 (0.07) 8.18 (0.08) 8.15 (0.08)
Mass [M] 0.248 0.78 (0.05) 0.253 (0.03) 0.688 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.2271 0.6761
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] 2.97 (0.2) 2.89 (0.3) 2.97 2.96 (0.2)
Distance [pc] 337.27 (22) 346.54 (36) 337.27 337.27 (22)
Composition H H
Proper motion (right ascension) [mas/yr] -38.03738765 (0.2) -38.64941225 (0.4) -38.037 (0.2) -36.3
Proper motion (declination) [mas/yr] 14.62953239 (0.2) 14.89567615 (0.4) 14.63 (0.2) 14.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.86 (0.02) 18.86 (0.02) 18.87 (0.03) 18.87 18.84 (0.03)
g magnitude 18.37 (0.007) 18.37 (0.007) 18.42 (0.03) 18.42 18.40 (0.03)
r magnitude 18.57 (0.009) 18.57 (0.009) 18.60 (0.03) 18.60 18.60 (0.03)
i magnitude 18.74 (0.01) 18.74 (0.01) 18.75 (0.02) 18.75 18.75 (0.02)
z magnitude 18.96 (0.05) 18.96 (0.05) 18.98 (0.05) 18.99 18.99 (0.05)
G magnitude 18.47 (0.01) 18.51 18.47 18.47 (0.003)
BP magnitude 18.50 (0.01) 18.48
RP magnitude 18.42 (0.02) 18.39
Pan g magnitude 18.43 (0.006)
Pan r magnitude 18.57 (0.005)
Pan i magnitude 18.77 (0.006)
Pan z magnitude 18.94 (0.009)
Pan y magnitude 19.10 (0.03)
E(B-V) 0.020

* 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.