SDSS J082323.20+360834.7

All names: Gaia DR3 904371575389293440, SDSS J082323.20+360835.1, LAMOST J082323.19+360834.7, SDSS J082323.20+360834.8, Gaia EDR3 904371575389293440, SDSS J082323.19+360834.9, SDSS J082323.20+360834.7, Gaia DR2 904371575389293440, GALEX J082323.0+360835, SDSS J082323.20+360834.79

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 23 23.19 (0.3) 08 23 23.20 08 23 23.19 (0.3) 08 23 23.20 (0.3)
Declination 36 08 34.68 (0.2) 36 08 35.14 36 08 34.69 (0.3) 36 08 35.23 (0.2)
Spectral type DB DB DB DB
Effective temperature [K] 15180.0 14876.0 11895.0 15387.0 (80) 15507.0 (100)
log(g) [cgs] 8.09 7.59 7.30 8.00 (0) 8.31 (0.009)
Mass [M] 0.645 0.387 0.28 0.797 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.1985
log(H/He) <-6.208 <-5.19
log(C/He)
log(Ca/He) <-7.09
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] 2.80 (0.3) 2.12 (0.4) 2.80 (0.3)
Distance [pc] 357.43 (38) 472.37 (88) 378.00 357.44 (38)
Composition He
Proper motion (right ascension) [mas/yr] -14.72050146 (0.3) -15.16976524 (0.7) -14.721 (0.3)
Proper motion (declination) [mas/yr] -34.76527238 (0.2) -34.34638024 (0.6) -34.765 (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 19.09 (0.02) 19.09 (0.02) 19.09 (0.02)
g magnitude 19.13 (0.01) 19.13 (0.01) 19.13 (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 19.82 (0.07) 19.82 (0.07) 19.82 (0.07)
G magnitude 19.23 (0.05) 19.27 19.23 (0.004)
BP magnitude 19.24 (0.05) 19.22
RP magnitude 19.38 (0.05) 19.30
Pan g magnitude 19.16 (0.009)
Pan r magnitude 19.39 (0.02)
Pan i magnitude 19.62 (0.01)
Pan z magnitude 19.77 (0.02)
Pan y magnitude 19.74 (0.03)
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.