[VV2006b] J080856.9+314615

All names: [VV2006b] J080856.9+314615, SDSS J080856.86+314615.5, SDSS J080856.85+314615.5, Gaia EDR3 901867540736418176, SDSS J080856.86+314615.50, GALEX J080856.8+314615, Gaia DR3 901867540736418176, Gaia DR2 901867540736418176, [VV2010b] J080856.9+314615

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 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 08 56.85 (0.5) 08 08 56.85 08 08 56.85 (0.7) 08 08 56.86 (0.5) 08 08 56.86
Declination 31 46 15.50 (0.4) 31 46 15.56 31 46 15.51 (0.6) 31 46 15.59 (0.4) 31 46 15.49
Spectral type DB DB DB DZ:
Effective temperature [K] 12120.0 12210.0 12027.0 12953.0 (529)
log(g) [cgs] 7.41 8.79 8.77 7.89 (0.5)
Mass [M] 0.311 1.083 1.073 0.518 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 1.4300
log(H/He) -5.604
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] 2.74 (0.6) 4.00 (0.9) 2.74 (0.6)
Distance [pc] 365.50 (74) 250.25 (56) 365.50 (74)
Composition He
Proper motion (right ascension) [mas/yr] -4.70061298 (0.7) -3.364243571 (1) -4.701 (0.7)
Proper motion (declination) [mas/yr] -5.604539013 (0.4) -4.021419985 (1) -5.605 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 20.21
V magnitude 20.16
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.02 (0.03) 20.04 (0.03) 20.04 (0.03)
g magnitude 20.04 (0.02) 20.04 (0.01) 20.05 (0.03)
r magnitude 20.22 (0.02) 20.22 (0.02) 20.22 (0.02)
i magnitude 20.39 (0.03) 20.39 (0.03) 20.36 (0.04)
z magnitude 20.64 (0.1) 20.62 (0.1) 20.62 (0.1)
G magnitude 20.09 (0.08) 20.17 20.09 (0.006)
BP magnitude 20.32 (0.08) 20.04
RP magnitude 19.90 (0.09) 20.02
Pan g magnitude 20.08 (0.01)
Pan r magnitude 20.20 (0.01)
Pan i magnitude 20.44 (0.02)
Pan z magnitude 20.52 (0.05)
Pan y magnitude
E(B-V) 0.027

* 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.