GALEX 2694395072609257917

All names: SDSS J090703.39+043055.8, USNO-A2.0 0900-06287910, SDSS J090703.40+043055.8, GALEX 2694395072609257917, Gaia DR3 580049764415000192, SDSS J090703.37+043055.9, SDSS J090703.37+043055.92, Gaia DR2 580049764415000192, Gaia EDR3 580049764415000192

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 09 07 03.35 (0.2) 09 07 03.40 09 07 03.35 (0.4) 09 07 03.35 09 07 03.40 (0.4)
Declination 04 30 56.04 (0.2) 04 30 55.88 04 30 56.04 (0.5) 04 30 56.04 04 30 55.95 (0.5)
Spectral type DB DB DC: DB DC
Effective temperature [K] 12092.0 10715.0 10850.0 (156) 13002.0 (902)
log(g) [cgs] 8.91 7.37 8.00 (0) 8.31 (0.1)
Mass [M] 1.145 0.294 0.779 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.2786
log(H/He) -5.902
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] 3.90 (0.3) 2.61 (0.6) 3.90 2.61 (0.6)
Distance [pc] 256.15 (18) 382.91 (95) 256.15 382.91 (95)
Composition He
Proper motion (right ascension) [mas/yr] -50.91092695 (0.3) -48.57386729 (1) -48.574 (1)
Proper motion (declination) [mas/yr] 8.410316874 (0.3) 5.564468054 (2) 5.564 (2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.30 (0.3)
V magnitude
R magnitude 18.50 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.25 (0.03) 19.25 (0.03) 19.25 (0.03)
g magnitude 19.12 (0.01) 19.12 (0.01) 19.12 (0.01)
r magnitude 19.25 (0.01) 19.25 (0.01) 19.25 (0.01)
i magnitude 19.43 (0.02) 19.43 (0.02) 19.43 (0.02)
z magnitude 19.68 (0.09) 19.68 (0.09) 19.68 (0.09)
G magnitude 19.14 (0.03) 19.19 19.14 19.19 (0.004)
BP magnitude 19.11 (0.03) 19.15
RP magnitude 19.16 (0.05) 19.10
Pan g magnitude 19.12 (0.006)
Pan r magnitude 19.27 (0.02)
Pan i magnitude 19.40 (0.01)
Pan z magnitude 19.64 (0.03)
Pan y magnitude 19.63 (0.04)
E(B-V) 0.024

* 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.