SDSS J091707.51+635726.4

All names: SDSS J091707.51+635726.40, SDSS J091707.52+635726.4, SDSS J091707.51+635726.4, SDSS J091707.50+635726.4, Gaia DR3 1067428187715145728, GALEX J091707.4+635727, Gaia EDR3 1067428187715145728, Gaia DR2 1067428187715145728

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 17 07.52 (0.1) 09 17 07.50 09 17 07.52 (0.2) 09 17 07.52 09 17 07.50 (0.1) 09 17 07.51
Declination 63 57 26.49 (0.2) 63 57 26.46 63 57 26.49 (0.2) 63 57 26.49 63 57 26.52 (0.2) 63 57 26.45
Spectral type DB DB DB DB DB+MS
Effective temperature [K] 19021.0 16224.0 13257.0 13808.0 (788) 18778.0 (588)
log(g) [cgs] 8.33 8.12 7.84 7.73 (0.1) 8.14 (0.1)
Mass [M] 0.802 0.666 0.501 0.443 (0.09) 0.673 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 0.2313
log(H/He) -4.687
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] 2.35 (0.2) 2.62 (0.3) 2.35 2.35 (0.2)
Distance [pc] 424.95 (39) 381.68 (48) 424.95 424.95 (39)
Composition He
Proper motion (right ascension) [mas/yr] 8.216905436 (0.1) 8.470157874 (0.3) 8.217 (0.1)
Proper motion (declination) [mas/yr] -1.886313584 (0.2) -1.343963297 (0.5) -1.886 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.22 (0.03) 19.22 (0.03) 19.21 (0.03)
g magnitude 19.19 (0.01) 19.19 (0.01) 19.20 (0.02)
r magnitude 19.44 (0.02) 19.44 (0.02) 19.45 (0.03)
i magnitude 19.69 (0.03) 19.69 (0.03) 19.71 (0.04)
z magnitude 20.05 (0.1) 20.05 (0.1) 20.06 (0.1)
G magnitude 19.32 (0.02) 19.36 19.32 19.32 (0.003)
BP magnitude 19.38 (0.02) 19.26
RP magnitude 19.42 (0.04) 19.34
Pan g magnitude 19.23 (0.01)
Pan r magnitude 19.45 (0.008)
Pan i magnitude 19.70 (0.01)
Pan z magnitude 19.95 (0.02)
Pan y magnitude
E(B-V) 0.035

* 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.