SDSS J163415.68+195414.3

All names: SDSS J163415.68+195414.3, SDSS J163415.68+195414.30, Gaia DR3 4563766759068958336, SDSS J163415.67+195414.3, Gaia DR2 4563766759068958336, GALEX J163415.6+195414, Gaia EDR3 4563766759068958336

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 34 15.67 (0.2) 16 34 15.68 16 34 15.67 (0.2) 16 34 15.67 16 34 15.68 (0.2) 16 34 15.68
Declination 19 54 14.36 (0.2) 19 54 14.35 19 54 14.36 (0.2) 19 54 14.36 19 54 14.35 (0.2) 19 54 14.33
Spectral type DB DZ DB DB DB
Effective temperature [K] 14224.0 12786.0 11489.0 10314.0 (533) 14416.0 (276)
log(g) [cgs] 8.25 8.09 7.98 7.60 (0.1) 8.55 (0.2)
Mass [M] 0.746 0.642 0.573 0.38 (0.07) 0.931 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.4197
log(H/He) <-6.172
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] 3.46 (0.2) 3.42 (0.3) 3.46 3.46 (0.2)
Distance [pc] 289.40 (20) 292.23 (23) 289.40 289.39 (20)
Composition He
Proper motion (right ascension) [mas/yr] -11.62072179 (0.2) -11.72098914 (0.4) -11.621 (0.2)
Proper motion (declination) [mas/yr] 0.302972686 (0.2) 0.429899434 (0.4) 0.303 (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 19.19 (0.02) 19.19 (0.02) 19.18 (0.03)
g magnitude 19.13 (0.01) 19.13 (0.01) 19.13 (0.02)
r magnitude 19.32 (0.01) 19.32 (0.01) 19.32 (0.02)
i magnitude 19.50 (0.02) 19.50 (0.02) 19.50 (0.02)
z magnitude 19.76 (0.06) 19.76 (0.06) 19.78 (0.06)
G magnitude 19.20 (0.02) 19.24 19.20 19.20 (0.004)
BP magnitude 19.21 (0.02) 19.20
RP magnitude 19.16 (0.04) 19.24
Pan g magnitude 19.16 (0.009)
Pan r magnitude 19.32 (0.007)
Pan i magnitude 19.51 (0.01)
Pan z magnitude 19.67 (0.02)
Pan y magnitude 19.86 (0.05)
E(B-V) 0.043

* 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.