SDSS J081251.05+160728.7

All names: Gaia DR2 655677889322675584, Gaia EDR3 655677889322675584, SDSS J081251.04+160728.6, SDSS J081251.05+160728.7, SDSS J081251.05+160728.70, GALEX J081251.0+160728, Gaia DR3 655677889322675584

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 12 51.06 (0.5) 08 12 51.05 08 12 51.06 (0.6) 08 12 51.04 (0.5) 08 12 51.05
Declination 16 07 28.59 (0.3) 16 07 28.64 16 07 28.59 (0.3) 16 07 28.69 (0.3) 16 07 28.69
Spectral type DB DB DB DB
Effective temperature [K] 14356.0 14743.0 13341.0 14702.0 (365)
log(g) [cgs] 7.52 7.98 7.87 7.74 (0.3)
Mass [M] 0.357 0.58 0.516 0.454 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.2358
log(H/He) -5.771
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] 1.93 (0.6) 2.00 (0.8) 1.93 (0.6)
Distance [pc] 517.99 (151) 499.23 (190) 518.00 (151)
Composition He
Proper motion (right ascension) [mas/yr] 15.2194947 (0.6) 14.39180563 (1) 15.219 (0.6)
Proper motion (declination) [mas/yr] -6.140786279 (0.4) -5.876761842 (0.7) -6.141 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.69 (0.03) 19.69 (0.03) 19.67 (0.04)
g magnitude 19.73 (0.01) 19.73 (0.01) 19.74 (0.02)
r magnitude 19.99 (0.02) 19.98 (0.02) 19.96 (0.02)
i magnitude 20.21 (0.03) 20.21 (0.03) 20.22 (0.04)
z magnitude 20.68 (0.2) 20.68 (0.2) 20.63 (0.2)
G magnitude 19.86 (0.07) 19.92 19.86 (0.006)
BP magnitude 19.93 (0.07) 19.85
RP magnitude 19.89 (0.1) 19.83
Pan g magnitude 19.78 (0.01)
Pan r magnitude 19.99 (0.02)
Pan i magnitude 20.22 (0.01)
Pan z magnitude 20.40 (0.05)
Pan y magnitude 21.14 (0.3)
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.