SDSS J075608.44+490239.7

All names: SDSS J075608.43+490239.7, SDSS J075608.44+490239.73, Gaia DR2 933996576169602816, Gaia DR3 933996576169602816, SDSS J075608.44+490239.7, Gaia EDR3 933996576169602816, GALEX J075608.4+490239

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 07 56 08.44 (0.2) 07 56 08.44 07 56 08.44 (0.3) 07 56 08.43 (0.2)
Declination 49 02 39.79 (0.2) 49 02 39.72 49 02 39.78 (0.2) 49 02 39.74 (0.2)
Spectral type DB DB DB DB+MS
Effective temperature [K] 16017.0 15408.0 13732.0 16208.0 (116) 16107.0 (10)
log(g) [cgs] 8.14 8.41 8.27 8.09 (0.08) 8.09 (0.007)
Mass [M] 0.677 0.853 0.757 0.6509999999999999 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.4072
log(H/He) -5.682 <-5.11
log(C/He)
log(Ca/He) <-6.62
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] 3.07 (0.3) 3.63 (0.4) 3.07 (0.3)
Distance [pc] 326.23 (33) 275.74 (33) 361.00 326.22 (33)
Composition He
Proper motion (right ascension) [mas/yr] 6.25580169 (0.3) 6.186947921 (0.7) 6.256 (0.3)
Proper motion (declination) [mas/yr] 2.799308109 (0.2) 2.418920585 (0.4) 2.799 (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 18.90 (0.02) 18.89 (0.02) 18.90 (0.02)
g magnitude 18.95 (0.009) 18.97 (0.02) 18.95 (0.009)
r magnitude 19.28 (0.01) 19.27 (0.03) 19.28 (0.01)
i magnitude 19.50 (0.02) 19.49 (0.09) 19.50 (0.02)
z magnitude 19.80 (0.09) 19.80 (0.1) 19.80 (0.09)
G magnitude 19.09 (0.03) 19.15 19.09 (0.004)
BP magnitude 19.01 (0.03) 19.00
RP magnitude 19.09 (0.05) 19.02
Pan g magnitude 18.99 (0.008)
Pan r magnitude 19.23 (0.008)
Pan i magnitude 19.47 (0.01)
Pan z magnitude 19.72 (0.02)
Pan y magnitude 19.79 (0.01)
E(B-V) 0.032

* 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.