SDSS J084717.71+322209.4

All names: Gaia EDR3 707029480385287680, GALEX J084717.7+322209, SDSS J084717.71+322209.4, Gaia DR2 707029480385287680, LAMOST J084717.71+322209.4, SDSS J084717.70+322209.4, SDSS J084717.71+322209.40, Gaia DR3 707029480385287680, USNO-A2.0 1200-06142291

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 Eisenstein et al. 2006 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 47 17.69 (0.2) 08 47 17.71 08 47 17.69 (0.2) 08 47 17.69 08 47 17.72 (0.2) 08 47 17.72 08 47 17.71
Declination 32 22 09.39 (0.1) 32 22 09.44 32 22 09.39 (0.2) 32 22 09.39 32 22 09.43 (0.1) 32 22 09.45 32 22 09.45
Spectral type DBAH: DB DBAH SD: DBAH: DB
Effective temperature [K] 13722.0 13696.0 12977.0 12884.0 (146) 14798.0 (876) 14445.0 (224) 14090.0 (362)
log(g) [cgs] 8.71 8.80 8.75 8.00 (0) 8.86 (0.07) 8.91 (0.1) 9.12 (0.2)
Mass [M] 1.036 1.089 1.061 1.119 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 1.1360
log(H/He) -4.672 -4.72 (0.4)
log(C/He)
log(Ca/He) <-8.88
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] 6.07 (0.2) 6.18 (0.3) 6.07 6.07 (0.2)
Distance [pc] 164.84 (6) 161.71 (8) 273.00 164.84 164.84 (6)
Composition He
Proper motion (right ascension) [mas/yr] -19.71916132 (0.2) -19.57454461 (0.5) -19.719 (0.2) -22.9
Proper motion (declination) [mas/yr] -2.881967624 (0.2) -2.541690338 (0.3) -2.882 (0.2) -2.6
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.10 (0.3)
V magnitude
R magnitude 18.90 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.69 (0.02) 18.69 (0.02) 18.73 (0.02) 18.73 (0.02)
g magnitude 18.74 (0.008) 18.74 (0.008) 18.75 (0.02) 18.75 (0.02)
r magnitude 19.01 (0.01) 19.01 (0.01) 19.05 (0.02) 19.05 (0.02)
i magnitude 19.23 (0.02) 19.23 (0.02) 19.24 (0.02) 19.24 (0.02)
z magnitude 19.45 (0.06) 19.45 (0.06) 19.45 (0.08) 19.45 (0.08)
G magnitude 18.88 (0.02) 18.92 18.88 18.88 (0.003)
BP magnitude 18.87 (0.02) 18.81
RP magnitude 18.94 (0.03) 18.90
Pan g magnitude 18.79 (0.01)
Pan r magnitude 19.06 (0.02)
Pan i magnitude 19.27 (0.02)
Pan z magnitude 19.47 (0.03)
Pan y magnitude 19.45 (0.04)
E(B-V) 0.007

* 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.