SDSS J080431.07+120807.6

All names: SDSS J080431.07+120807.6, GALEX J080431.0+120807, Gaia DR2 650022138948718336, SDSS J080431.07+120807.3, Gaia EDR3 650022138948718336, Gaia DR3 650022138948718336, SDSS J080431.07+120807.61, SDSS J080431.06+120807.6

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 08 04 31.07 (0.1) 08 04 31.07 08 04 31.07 (0.1) 08 04 31.07 08 04 31.07 (0.1)
Declination 12 08 07.08 (0.07) 12 08 07.60 12 08 07.11 (0.07) 12 08 07.08 12 08 07.88 (0.07)
Spectral type DC DC DC DC DC DC
Effective temperature [K] 10516.0 10673.0 10403.0 (370) 10252.0 (265)
log(g) [cgs] 8.18 8.13 8.15 (0.3) 8.05 (0.04)
Mass [M] 0.711 0.66 0.612 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.6863 0.6362
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 8.00 (0.1) 7.88 (0.2) 8.00 8.00 (0.1)
Distance [pc] 124.93 (2) 126.90 (2) 124.93 124.93 (2)
Composition
Proper motion (right ascension) [mas/yr] 5.354578642 (0.1) 5.155613595 (0.2) 5.355 (0.1)
Proper motion (declination) [mas/yr] -49.98032781 (0.08) -50.1430029 (0.1) -49.98 (0.08)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.82 (0.01) 17.82 (0.01) 17.82 (0.01)
g magnitude 17.73 (0.005) 17.73 (0.01) 17.73 (0.005)
r magnitude 17.88 (0.006) 17.88 (0.01) 17.88 (0.006)
i magnitude 18.04 (0.008) 18.04 (0.01) 18.04 (0.008)
z magnitude 18.22 (0.02) 18.22 (0.02) 18.22 (0.02)
G magnitude 17.78 (0.01) 17.81 17.78 17.78 (0.003)
BP magnitude 17.82 (0.01) 17.80
RP magnitude 17.76 (0.01) 17.72
Pan g magnitude 17.78 (0.004)
Pan r magnitude 17.89 (0.004)
Pan i magnitude 18.06 (0.003)
Pan z magnitude 18.24 (0.007)
Pan y magnitude 18.35 (0.01)
E(B-V) 0.004

* 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.