USNO-A2.0 0825-19880842

All names: SDSS J231141.59-004100.60, Gaia DR3 2650975899537545728, GALEX J231141.6-004100, Gaia DR2 2650975899537545728, WD 2309-009, SDSS J231141.59-004100.6, SDSS J231141.57-004100.7, USNO-A2.0 0825-19880842, J2311-0041, Gaia EDR3 2650975899537545728, SDSS J231141.58-004100.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) Coutu et al. 2019 Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 23 11 41.56 (0.2) 23 11 41.58 23 11 41.58 23 11 41.56 (0.2) 23 11 41.56 23 11 41.58 (0.2) 23 11 41.58 23 11 40.97 23 11 41.59
Declination -00 41 01.00 (0.2) -00 41 00.77 -00 41 00.63 -00 41 00.99 (0.2) -00 41 01.00 -00 41 00.62 (0.2) -00 41 00.74 -00 40 53.04 -00 41 00.64
Spectral type DBZ DZ DBZ DBZ DBZ DBZ DZ
Effective temperature [K] 14299.0 13513.0 12701.0 (746) 13656.0 (137) 11469.0 (760) 15479.0 (152) 14483.0 (271)
log(g) [cgs] 8.62 8.20 8.18 8.00 (0) 7.81 (0.1) 8.97 (0.04) 8.73 (0.2)
Mass [M] 0.985 0.708 0.6968 0.477 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.4370
log(H/He) <-6.165 <-6.0735 <-5.42
log(C/He)
log(Ca/He) -7.3244 (0.2) -7.33 (0.3)
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] 4.23 (0.2) 4.27 4.27 (0.2) 4.23 4.23 (0.2)
Distance [pc] 236.46 (1e+01) 234.40 (14) 234.40 (14) 263.00 236.46 236.46 (1e+01)
Composition He
Proper motion (right ascension) [mas/yr] -18.2647236 (0.2) -18.27508227 (0.4) -18.265 (0.2) -19.8
Proper motion (declination) [mas/yr] -23.86352904 (0.2) -23.58522075 (0.4) -23.864 (0.2) -25.2
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.60 (0.3)
V magnitude
R magnitude 18.50 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.59 (0.02) 18.59 (0.02) 18.61 (0.03) 18.61 18.60 (0.03)
g magnitude 18.62 (0.008) 18.62 (0.008) 18.62 (0.02) 18.62 18.62 (0.02)
r magnitude 18.82 (0.01) 18.82 (0.01) 18.82 (0.02) 18.83 18.81 (0.02)
i magnitude 19.05 (0.01) 19.05 (0.01) 19.04 (0.03) 19.04 19.03 (0.03)
z magnitude 19.23 (0.05) 19.23 (0.05) 19.27 (0.07) 19.26 19.27 (0.07)
G magnitude 18.71 (0.01) 18.75 18.71 18.71 (0.004)
BP magnitude 18.72 (0.01) 18.68
RP magnitude 18.75 (0.03) 18.79
Pan g magnitude 18.65 (0.004)
Pan r magnitude 18.85 (0.01)
Pan i magnitude 19.05 (0.01)
Pan z magnitude 19.27 (0.01)
Pan y magnitude 19.37 (0.04)
E(B-V) 0.042

* 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.