GALEX 2698335700808369017

All names: USNO-A2.0 0975-06727142, SDSS J112712.29+120227.0, Gaia EDR3 3917378750866300928, SDSS J112712.26+120227.38, SDSS J112712.26+120227.3, GALEX 2698335700808369017, Gaia DR3 3917378750866300928, Gaia DR2 3917378750866300928

Parameter Unit Gaia EDR3 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 11 27 12.25 (0.4) 11 27 12.29 11 27 12.25 (0.5) 11 27 12.30 (0.5)
Declination 12 02 27.43 (0.5) 12 02 27.04 12 02 27.41 (0.4) 12 02 26.91 (0.4)
Spectral type DB DB DB DB
Effective temperature [K] 14694.0 14772.0 15189.0 (243)
log(g) [cgs] 8.25 8.29 8.49 (0.2)
Mass [M] 0.742 0.768 0.962 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.3406
log(H/He) -5.82
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] 2.48 (0.5) 2.89 (0.7) 2.89 (0.7)
Distance [pc] 402.85 (85) 346.07 (81) 346.07 (81)
Composition He
Proper motion (right ascension) [mas/yr] -46.651956 (0.6) -46.8685868 (1) -46.869 (1)
Proper motion (declination) [mas/yr] 32.53943449 (0.6) 32.3302893 (0.9) 32.33 (0.9)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.70 (0.3)
V magnitude
R magnitude 18.70 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.24 (0.03) 19.24 (0.04) 19.24 (0.03)
g magnitude 19.27 (0.01) 19.29 (0.03) 19.27 (0.01)
r magnitude 19.55 (0.02) 19.59 (0.03) 19.55 (0.02)
i magnitude 19.85 (0.03) 19.88 (0.03) 19.85 (0.03)
z magnitude 20.01 (0.1) 20.06 (0.1) 20.01 (0.1)
G magnitude 19.43 (0.06) 19.50 19.50 (0.006)
BP magnitude 19.52 (0.06) 19.36
RP magnitude 19.62 (0.1) 19.30
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.023

* 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.