SDSS J153104.46+150117.4

All names: Gaia EDR3 1194859940403232000, SDSS J153104.45+150117.3, Gaia DR3 1194859940403232000, SDSS J153104.46+150117.4, SDSS J153104.46+150117.40, Gaia DR2 1194859940403232000, GALEX J153104.4+150117

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 15 31 04.44 (0.5) 15 31 04.45 15 31 04.44 (0.8) 15 31 04.46 (0.5) 15 31 04.46
Declination 15 01 16.97 (0.4) 15 01 17.40 15 01 16.99 (0.5) 15 01 17.48 (0.4) 15 01 17.42
Spectral type DB DB DB DB
Effective temperature [K] 14904.0 16434.0 12446.0 15446.0 (431)
log(g) [cgs] 6.62 8.40 8.04 7.50 (0.3)
Mass [M] 0.168 0.843 0.61 0.348 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.3686
log(H/He) <-5.892
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] 1.46 (0.5) 2.11 (0.9) 1.46 (0.5)
Distance [pc] 685.81 (239) 474.74 (212) 685.82 (239)
Composition He
Proper motion (right ascension) [mas/yr] -10.19644224 (0.6) -9.555087857 (1) -10.196 (0.6)
Proper motion (declination) [mas/yr] -31.81609212 (0.5) -31.61398307 (1) -31.816 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.02 (0.04) 20.02 (0.04) 20.01 (0.04)
g magnitude 20.04 (0.02) 20.04 (0.02) 20.05 (0.02)
r magnitude 20.31 (0.02) 20.31 (0.02) 20.27 (0.03)
i magnitude 20.61 (0.04) 20.61 (0.04) 20.53 (0.04)
z magnitude 20.80 (0.2) 20.80 (0.2) 20.53 (0.1)
G magnitude 20.14 (0.08) 20.21 20.14 (0.007)
BP magnitude 20.07 (0.08) 20.23
RP magnitude 20.35 (0.1) 20.38
Pan g magnitude 20.08 (0.01)
Pan r magnitude 20.28 (0.02)
Pan i magnitude 20.53 (0.02)
Pan z magnitude 20.64 (0.03)
Pan y magnitude 20.45 (0.2)
E(B-V) 0.038

* 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.