SDSS J074253.65+185306.7

All names: Gaia DR3 671508966976840576, Gaia EDR3 671508966976840576, GALEX J074253.6+185306, SDSS J074253.65+185306.70, Gaia DR2 671508966976840576, SDSS J074253.65+185306.6, SDSS J074253.65+185306.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 07 42 53.62 (0.1) 07 42 53.65 07 42 53.62 (0.1) 07 42 53.62 07 42 53.66 (0.1) 07 42 53.65
Declination 18 53 05.44 (0.1) 18 53 06.68 18 53 05.49 (0.1) 18 53 05.44 18 53 07.00 (0.1) 18 53 06.69
Spectral type DB DB DB DBH DB
Effective temperature [K] 15099.0 14278.0 14032.0 15224.0 (31) 15015.0 (878) 15609.0 (63)
log(g) [cgs] 7.96 7.93 7.92 8.00 (0) 8.00 (0.08) 8.39 (0.04)
Mass [M] 0.569 0.55 0.544 0.587 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.2168
log(H/He) -6.061 <-5.79
log(C/He)
log(Ca/He) <-8.01
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] 4.67 (0.1) 4.79 (0.2) 4.67 4.67 (0.1)
Distance [pc] 214.33 (6) 208.67 (8) 213.00 214.33 214.33 (6)
Composition He
Proper motion (right ascension) [mas/yr] -37.72002524 (0.1) -38.22977658 (0.3) -37.72 (0.1)
Proper motion (declination) [mas/yr] -97.39525184 (0.1) -97.27582433 (0.2) -97.395 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.70 (0.01) 17.70 (0.01) 17.72 (0.02)
g magnitude 17.78 (0.005) 17.79 (0.005) 17.77 (0.02)
r magnitude 18.04 (0.007) 18.04 (0.007) 18.06 (0.01)
i magnitude 18.27 (0.01) 18.27 (0.01) 18.28 (0.01)
z magnitude 18.59 (0.03) 18.59 (0.03) 18.59 (0.03)
G magnitude 17.90 (0.01) 17.94 17.90 17.90 (0.003)
BP magnitude 17.87 (0.01) 17.84
RP magnitude 18.06 (0.04) 18.01
Pan g magnitude 17.81 (0.003)
Pan r magnitude 18.07 (0.002)
Pan i magnitude 18.31 (0.004)
Pan z magnitude 18.51 (0.009)
Pan y magnitude 18.67 (0.02)
E(B-V) 0.010

* 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.