SDSS J074651.08+181430.1

All names: Gaia EDR3 671599397511141376, GALEX J074650.9+181429, SDSS J074651.08+181430.18, Gaia DR3 671599397511141376, Gaia DR2 671599397511141376, SDSS J074651.08+181430.1

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 07 46 51.06 (0.6) 07 46 51.08 07 46 51.06 (0.8) 07 46 51.09 (0.6)
Declination 18 14 30.12 (0.4) 18 14 30.18 18 14 30.12 (0.5) 18 14 30.22 (0.4)
Spectral type DB: DB: DC DC
Effective temperature [K] 11032.0 11484.0 10465.0 12893.0 (1000)
log(g) [cgs] 6.98 8.22 8.07 8.42 (0.05)
Mass [M] 0.205 0.723 0.622
log(Luminosity) [L]
Cooling age [Gyr] 0.6107
log(H/He) <-6.015
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] 2.24 (0.7) 2.75 (0.8) 2.24 (0.7)
Distance [pc] 446.65 (134) 364.07 (108) 446.65 (134)
Composition He
Proper motion (right ascension) [mas/yr] -30.4706953 (0.6) -29.80336225 (1) -30.471 (0.6)
Proper motion (declination) [mas/yr] -6.751582343 (0.5) -6.89873918 (1) -6.752 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.12 (0.04) 20.12 (0.04) 20.12 (0.04)
g magnitude 20.03 (0.02) 20.03 (0.02) 20.03 (0.02)
r magnitude 20.10 (0.02) 20.10 (0.02) 20.10 (0.02)
i magnitude 20.30 (0.03) 20.30 (0.03) 20.30 (0.03)
z magnitude 20.74 (0.2) 20.74 (0.2) 20.74 (0.2)
G magnitude 20.09 (0.1) 20.17 20.09 (0.007)
BP magnitude 20.12 (0.1) 20.01
RP magnitude 20.04 (0.2) 20.24
Pan g magnitude 20.03 (0.02)
Pan r magnitude 20.15 (0.01)
Pan i magnitude 20.33 (0.03)
Pan z magnitude 20.43 (0.05)
Pan y magnitude 20.41 (0.1)
E(B-V) 0.025

* 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.