WD 0012+008

All names: SDSS J001529.75+010521.40, GALEX J001529.7+010522, USNO-B1.0 0910-00002765, Gaia DR3 2546405570572258944, SDSS J001529.75+010521.3, WD 0012+008, Gaia EDR3 2546405570572258944, SDSS J001529.75+010521.4, SDSS J001529.74+010521.3, LAMOST J001529.74+010521.1, Gaia DR2 2546405570572258944, PB 5823

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Nitta et al. 2009 Eisenstein et al. 2006 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 00 15 29.74 (0.2) 00 15 29.74 00 15 29.74 (0.3) 00 15 29.74 00 15 29.75 (0.2) 00 15 28.82 00 15 29.75
Declination 01 05 21.12 (0.2) 01 05 21.30 01 05 21.13 (0.2) 01 05 21.32 01 05 21.39 (0.2) 01 05 22.20 01 05 21.38
Spectral type DB DB DB DB DB1.4 DB DB
Effective temperature [K] 39203.0 (913) 34751.0 31649.0 18779.0 34379.0 (1079) 40000.0 (800) 33894.0 (1345)
log(g) [cgs] 7.79 (0.09) 8.02 8.07 7.62 7.96 (0.2) 8.31 (0.1) 7.96 (0.2)
Mass [M] 0.53 (0.04) 0.635 0.658 0.408 0.6 (0.08)
log(Luminosity) [L] -0.30 (0.07)
Cooling age [Gyr] 0.0042 (0.0005) 0.0508
log(H/He) -2.429
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] 1.51 (0.3) 1.60 (0.4) 1.51 (0.3)
Distance [pc] 662.83 (129) 625.66 (151) 662.82 (129)
Composition He He
Proper motion (right ascension) [mas/yr] -2.016347939 (0.3) -3.066892764 (0.8) -2.016 (0.3)
Proper motion (declination) [mas/yr] -17.03555539 (0.2) -17.49114384 (0.6) -17.036 (0.2)
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.00
V magnitude
R magnitude
I magnitude
J magnitude 19.80 (0.1)
H magnitude
K magnitude
u magnitude 18.72 (0.02) 18.71 (0.03) 18.72 (0.02) 18.73 18.73 (0.03)
g magnitude 18.93 (0.009) 18.94 18.94 (0.04) 18.93 (0.009) 18.93 18.95 (0.04)
r magnitude 19.39 (0.01) 19.42 (0.02) 19.39 (0.01) 19.42 19.42 (0.02)
i magnitude 19.69 (0.02) 19.73 (0.03) 19.69 (0.02) 19.73 19.73 (0.03)
z magnitude 20.02 (0.1) 20.09 (0.1) 20.02 (0.1) 20.11 20.08 (0.1)
G magnitude 19.17 (0.02) 19.21 19.17 (0.004)
BP magnitude 19.09 (0.02) 18.98
RP magnitude 19.69 (0.06) 19.40
Pan g magnitude 19.05 (0.01)
Pan r magnitude 19.41 (0.009)
Pan i magnitude 19.68 (0.02)
Pan z magnitude 19.94 (0.04)
Pan y magnitude 19.95 (0.07)
E(B-V) 0.028

* 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.