SDSS J163401.23+243049.8

All names: SDSS J163401.22+243049.7, Gaia DR3 1300738748334473728, SDSS J163401.23+243049.8, SDSS J163401.23+243049.7, Gaia EDR3 1300738748334473728, GALEX J163401.2+243050, Gaia DR2 1300738748334473728, SDSS J163401.22+243049.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 34 01.24 (0.08) 16 34 01.22 16 34 01.24 (0.1) 16 34 01.24 16 34 01.22 (0.08) 16 34 01.23
Declination 24 30 49.83 (0.1) 24 30 49.79 24 30 49.83 (0.1) 24 30 49.83 24 30 49.76 (0.1) 24 30 49.78
Spectral type DBAHM: DB DBAH+M DBAHM: DB
Effective temperature [K] 11519.0 12310.0 (121) 11862.0 (364) 13256.0 (248)
log(g) [cgs] 8.11 8.00 (0) 8.10 (0.05) 8.72 (0.2)
Mass [M] 0.647 0.646 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.5015
log(H/He) <-5.64
log(C/He)
log(Ca/He) <-9.61
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] 4.68 (0.1) 4.81 (0.2) 4.68 4.68 (0.1)
Distance [pc] 213.79 (7) 208.10 (8) 232.00 213.79 213.79 (7)
Composition He
Proper motion (right ascension) [mas/yr] 18.42367986 (0.1) 18.25516389 (0.3) 18.424 (0.1)
Proper motion (declination) [mas/yr] 4.491192057 (0.1) 4.54379401 (0.3) 4.491 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.58 (0.02) 18.58 (0.02) 18.57 (0.02)
g magnitude 18.55 (0.007) 18.55 (0.007) 18.57 (0.02)
r magnitude 18.74 (0.009) 18.74 (0.009) 18.73 (0.01)
i magnitude 18.96 (0.01) 18.96 (0.01) 18.96 (0.02)
z magnitude 19.15 (0.05) 19.14 (0.05) 19.17 (0.05)
G magnitude 18.63 (0.02) 18.68 18.63 18.63 (0.003)
BP magnitude 18.64 (0.02) 18.64
RP magnitude 18.66 (0.02) 18.62
Pan g magnitude 18.59 (0.008)
Pan r magnitude 18.76 (0.004)
Pan i magnitude 18.96 (0.005)
Pan z magnitude 19.11 (0.02)
Pan y magnitude 19.24 (0.04)
E(B-V) 0.029

* 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.