SDSS J080630.85+271750.9

All names: SDSS J080630.86+271751.1, SDSS J080630.85+271750.9, Gaia DR3 683808344562873984, SDSS J080630.85+271750.92, Gaia DR2 683808344562873984, Gaia EDR3 683808344562873984

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 08 06 30.84 (0.2) 08 06 30.87 08 06 30.84 (0.3) 08 06 30.87 (0.2)
Declination 27 17 50.82 (0.2) 27 17 51.12 27 17 50.83 (0.2) 27 17 51.20 (0.2)
Spectral type DB DB DB DB
Effective temperature [K] 11755.0 12475.0 11684.0 11854.0 (157) 11763.0 (149)
log(g) [cgs] 7.07 8.16 8.04 8.00 (0) 8.00 (0)
Mass [M] 0.227 0.682 0.609
log(Luminosity) [L]
Cooling age [Gyr] 0.4377
log(H/He) -6.182 <-5.5
log(C/He)
log(Ca/He) <-9.76
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] 3.29 (0.3) 3.53 (0.4) 3.29 (0.3)
Distance [pc] 303.76 (25) 283.49 (32) 295.00 303.76 (25)
Composition He
Proper motion (right ascension) [mas/yr] -32.70350646 (0.3) -32.77041848 (0.7) -32.704 (0.3)
Proper motion (declination) [mas/yr] -24.08668652 (0.2) -23.77634274 (0.4) -24.087 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.18 (0.02) 19.18 (0.02) 19.18 (0.02)
g magnitude 19.14 (0.01) 19.14 (0.01) 19.14 (0.01)
r magnitude 19.36 (0.01) 19.36 (0.01) 19.36 (0.01)
i magnitude 19.55 (0.02) 19.55 (0.02) 19.55 (0.02)
z magnitude 19.79 (0.08) 19.79 (0.08) 19.79 (0.08)
G magnitude 19.19 (0.03) 19.24 19.19 (0.004)
BP magnitude 19.21 (0.03) 19.13
RP magnitude 19.23 (0.08) 18.98
Pan g magnitude 19.13 (0.009)
Pan r magnitude 19.31 (0.005)
Pan i magnitude 19.51 (0.008)
Pan z magnitude 19.66 (0.02)
Pan y magnitude 19.78 (0.08)
E(B-V) 0.017

* 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.