WD 1246+022

All names: SDSS J124854.91+015908.8, SDSS J124854.93+015908.70, SDSS J124854.93+015908.6, SDSS J124854.92+015908.6, Gaia DR3 3702624854148046976, SDSS J124854.93+015908.7, WD 1246+022, 2QZ J124854.9+015907, Gaia DR2 3702624854148046976, Gaia EDR3 3702624854148046976, GALEX J124854.9+015909

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 48 54.90 (0.2) 12 48 54.91 12 48 54.90 (0.3) 12 48 54.93 (0.2) 12 48 54.93 12 48 54.24 12 48 54.93
Declination 01 59 09.06 (0.1) 01 59 08.82 01 59 09.04 (0.2) 01 59 08.71 (0.1) 01 59 08.65 01 59 03.48 01 59 08.66
Spectral type DB DB DB DB2.5 DB DB+MS
Effective temperature [K] 19614.0 24983.0 16621.0 19281.0 (361) 19874.0 (784)
log(g) [cgs] 7.98 7.74 7.37 8.05 (0.1) 8.00 (0.1)
Mass [M] 0.585 0.476 0.316 0.594 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.0704
log(H/He) <-5.105
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] 2.05 (0.3) 1.67 (0.3) 2.05 (0.3)
Distance [pc] 487.08 (61) 598.05 (122) 487.07 (61)
Composition He
Proper motion (right ascension) [mas/yr] -27.53621306 (0.4) -27.90575287 (0.8) -27.536 (0.4) -33.2
Proper motion (declination) [mas/yr] 21.71697889 (0.3) 21.32248314 (0.5) 21.717 (0.3) 20.8
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.67 (0.02) 18.67 (0.02) 18.65 (0.02) 18.67 18.65 (0.02)
g magnitude 18.81 (0.009) 18.81 (0.009) 18.83 (0.02) 18.81 18.83 (0.02)
r magnitude 19.18 (0.01) 19.18 (0.01) 19.18 (0.02) 19.18 19.16 (0.02)
i magnitude 19.45 (0.02) 19.45 (0.02) 19.43 (0.03) 19.42 19.42 (0.03)
z magnitude 19.80 (0.08) 19.80 (0.08) 19.67 (0.1) 19.66 19.67 (0.1)
G magnitude 18.99 (0.02) 19.03 18.99 (0.003)
BP magnitude 18.96 (0.02) 18.92
RP magnitude 19.17 (0.04) 19.09
Pan g magnitude 18.87 (0.009)
Pan r magnitude 19.17 (0.02)
Pan i magnitude 19.47 (0.009)
Pan z magnitude 19.67 (0.02)
Pan y magnitude 19.79 (0.05)
E(B-V) 0.021

* 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.