SDSS J012215.76+082712.8

All names: SDSS J012215.77+082712.8, GALEX J012215.6+082712, Gaia EDR3 2578511413182367744, SDSS J012215.76+082712.7, Gaia DR2 2578511413182367744, Gaia DR3 2578511413182367744, SDSS J012215.76+082712.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 01 22 15.80 (0.9) 01 22 15.78 01 22 15.80 (1) 01 22 15.75 (0.9) 01 22 15.76
Declination 08 27 12.69 (0.6) 08 27 12.87 08 27 12.69 (0.9) 08 27 12.78 (0.6) 08 27 12.83
Spectral type DA DAH DAH DAH DA
Effective temperature [K] 9498.4 (320) 8514.0 9127.0 (167)
log(g) [cgs] 8.29 (0.2) 8.08 9.00 (0.2)
Mass [M] 0.7809214886856967 (0.4) 0.644
log(Luminosity) [L]
Cooling age [Gyr] 1.0280
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] 2.55 (1) 3.08 (1) 2.55 (1)
Distance [pc] 391.76 (154) 324.28 (127) 391.76 (154)
Composition H
Proper motion (right ascension) [mas/yr] 45.27378033 (2) 45.92153043 (3) 45.274 (2)
Proper motion (declination) [mas/yr] -6.144312725 (1) -7.355054807 (3) -6.144 (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 20.74 (0.09) 20.73 (0.09) 20.66 (0.09)
g magnitude 20.49 (0.03) 20.49 (0.03) 20.48 (0.03)
r magnitude 20.48 (0.04) 20.45 (0.04) 20.45 (0.04)
i magnitude 20.50 (0.05) 20.50 (0.05) 20.51 (0.06)
z magnitude 20.93 (0.3) 20.30 (0.2) 20.30 (0.2)
G magnitude 20.39 (0.09) 20.46 20.39 (0.008)
BP magnitude 20.27 (0.09) 20.50
RP magnitude 19.90 (0.1) 20.05
Pan g magnitude 20.45 (0.02)
Pan r magnitude 20.49 (0.02)
Pan i magnitude 20.52 (0.03)
Pan z magnitude 20.59 (0.05)
Pan y magnitude 19.97 (0.2)
E(B-V) 0.036

* 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.