SDSS J012212.19+325957.3

All names: Gaia DR2 316773766729205632, J0122+3259, Gaia DR3 316773766729205632, WDJ012212.14+325957.06, SDSS J012212.19+325957.3, Gaia EDR3 316773766729205632

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 01 22 12.32 (0.2) 01 22 12.19 01 22 12.31 (0.3) 01 22 12.32 01 22 12.14 (0.2) 01 22 12.31 01 22 12.19
Declination 32 59 57.93 (0.2) 32 59 57.34 32 59 57.90 (0.3) 32 59 57.93 32 59 57.05 (0.2) 32 59 57.90 32 59 57.31
Spectral type DC DC DC DC DC DC DC DC:
Effective temperature [K] 5401.0 (50) 5677.0 (54) 5856.0 5600.0 6300.0 (3)
log(g) [cgs] 7.96 (0.03) 8.17 (0.03) 8.28 8.13 10.00 (0.003)
Mass [M☉] 0.547 (0.02) 0.676 (0.03) 0.765 0.653
log(Luminosity) [L☉]
Cooling age [Gyr] 4.9300 4.5200 4.7170
log(H/He) -5.0
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 13.56 (0.2) 13.74 (0.3) 13.74 (0.3) 13.56 13.56 (0.2) 13.74 (0.3)
Distance [pc] 73.77 (1) 72.78 (2) 72.80 (2) 73.77 73.77 (1) 72.80 (2)
Composition He
Proper motion (right ascension) [mas/yr] 141.3590542 (0.2) 140.7082039 (0.6) 141.359 (0.2) 140.7082039
Proper motion (declination) [mas/yr] 54.50150831 (0.2) 53.92096897 (0.6) 54.502 (0.2) 53.92096897
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.01 (0.06)
H magnitude
K magnitude
u magnitude 20.06 (0.04) 20.08 (0.05) 20.07 (0.04) 20.07 (0.04) 20.10 (0.04)
g magnitude 19.22 (0.01) 19.22 (0.01) 19.22 (0.01) 19.22 (0.02)
r magnitude 18.81 (0.009) 18.82 (0.009) 18.82 (0.009) 18.81 (0.02)
i magnitude 18.69 (0.01) 18.69 (0.01) 18.69 (0.01) 18.71 (0.02)
z magnitude 18.63 (0.03) 18.63 (0.03) 18.63 (0.03) 18.64 (0.03)
G magnitude 18.83 (0.03) 18.85 18.83 18.83 (0.003) 18.85
BP magnitude 19.10 (0.03) 19.13 19.13
RP magnitude 18.37 (0.02) 18.39 18.39
Pan g magnitude 19.19 (0.01) 19.19 (0.01)
Pan r magnitude 18.82 (0.008) 18.82 (0.009)
Pan i magnitude 18.69 (0.005) 18.69 (0.005)
Pan z magnitude 18.68 (0.01) 18.68 (0.01)
Pan y magnitude 18.65 (0.02) 18.65 (0.03)
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.