SDSS J093040.09+054124.2

All names: SDSS J093040.09+054124.2, Gaia EDR3 3852568725161325440, Gaia DR3 3852568725161325440, GALEX J093040.2+054124, SDSS J093040.10+054124.3, SDSS J093040.10+054124.30, WD 0928+059, Gaia DR2 3852568725161325440

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 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 30 40.10 (0.5) 09 30 40.10 09 30 40.10 (0.6) 09 30 40.10 (0.5) 09 30 40.10 09 30 39.89 09 30 40.10
Declination 05 41 24.31 (0.5) 05 41 24.27 05 41 24.31 (1) 05 41 24.30 (0.5) 05 41 24.27 05 41 22.56 05 41 24.27
Spectral type DB DB DB DB DB DB
Effective temperature [K] 14742.0 15843.0 11126.0 15939.0 (413) 15436.0 (440)
log(g) [cgs] 7.17 8.16 7.66 7.93 (0.3) 7.90 (0.3)
Mass [M] 0.258 0.687 0.406 0.528 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.3105
log(H/He) -5.495
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] 2.34 (0.6) 2.12 (1) 2.34 (0.6)
Distance [pc] 426.75 (103) 471.69 (293) 426.75 (103)
Composition He
Proper motion (right ascension) [mas/yr] -4.961482365 (0.5) -5.25459225 (1) -4.961 (0.5) -14.8
Proper motion (declination) [mas/yr] 1.057012062 (0.5) 1.860833445 (1) 1.057 (0.5) 8.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.72 (0.04) 19.72 (0.04) 19.74 (0.04) 19.73 19.73 (0.04)
g magnitude 19.73 (0.01) 19.73 (0.01) 19.76 (0.02) 19.76 19.76 (0.02)
r magnitude 20.02 (0.02) 20.02 (0.02) 20.05 (0.03) 20.05 20.05 (0.03)
i magnitude 20.20 (0.03) 20.20 (0.03) 20.23 (0.04) 20.23 20.22 (0.04)
z magnitude 20.37 (0.1) 20.37 (0.1) 20.46 (0.2) 20.46 20.46 (0.1)
G magnitude 19.90 (0.04) 19.96 19.90 (0.005)
BP magnitude 19.94 (0.04) 19.80
RP magnitude 19.81 (0.07) 19.72
Pan g magnitude 19.81 (0.01)
Pan r magnitude 20.06 (0.009)
Pan i magnitude 20.22 (0.05)
Pan z magnitude 20.43 (0.05)
Pan y magnitude 20.16 (0.04)
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.