SDSS J163014.61+165856.4

All names: SDSS J163014.61+165856.40, Gaia DR2 4466257742888001664, Gaia DR3 4466257742888001664, SDSS J163014.61+165856.3, Gaia EDR3 4466257742888001664, SDSS J163014.61+165856.4, GALEX J163014.6+165856

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 30 14.61 (0.2) 16 30 14.61 16 30 14.61 (0.3) 16 30 14.61 (0.2) 16 30 14.61
Declination 16 58 56.42 (0.2) 16 58 56.38 16 58 56.42 (0.2) 16 58 56.35 (0.2) 16 58 56.37
Spectral type DO DBA DBO: DO
Effective temperature [K] 49322.0 (618) 50777.0 45111.0 50000.0 (496)
log(g) [cgs] 7.83 (0.2) 8.52 7.95 8.18 (0.2)
Mass [M] 0.57 (0.08) 0.948 0.615
log(Luminosity) [L] 0.09 (0.1)
Cooling age [Gyr] 0.0023 (0.0002)
log(H/He) <-2
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] 0.85 (0.3) 0.97 (0.4) 0.85 (0.3)
Distance [pc] 1176.76 (447) 1026.46 (459) 1176.75 (447)
Composition He
Proper motion (right ascension) [mas/yr] -3.275703152 (0.2) -2.588547988 (0.6) -3.276 (0.2)
Proper motion (declination) [mas/yr] 4.882664259 (0.2) 3.693526599 (0.5) 4.883 (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 18.91 (0.02) 18.91 (0.02) 18.89 (0.03)
g magnitude 19.24 (0.01) 19.24 (0.01) 19.26 (0.02)
r magnitude 19.74 (0.02) 19.74 (0.02) 19.76 (0.02)
i magnitude 20.08 (0.03) 20.08 (0.03) 20.14 (0.04)
z magnitude 20.22 (0.1) 20.22 (0.1) 20.43 (0.2)
G magnitude 19.49 (0.02) 19.56 19.49 (0.004)
BP magnitude 19.39 (0.02) 19.32
RP magnitude 19.83 (0.06) 19.80
Pan g magnitude 19.32 (0.02)
Pan r magnitude 19.75 (0.01)
Pan i magnitude 20.11 (0.01)
Pan z magnitude 20.44 (0.04)
Pan y magnitude 20.20 (0.2)
E(B-V) 0.055

* 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.