WD 0257-075

All names: SDSS J025934.97-072134.2, Gaia DR3 5179698505635671680, SDSS J025934.98-072134.20, WD 0257-075, PB 9417, SDSS J025934.98-072134.2, SDSS J025934.98-072134.3, Gaia DR2 5179698505635671680, SDSS J025935.04-072134.8, GALEX J025934.9-072134, Gaia EDR3 5179698505635671680

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 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 02 59 35.04 (0.1) 02 59 34.98 02 59 35.04 (0.2) 02 59 35.04 02 59 34.98 (0.1) 02 59 34.98 02 59 33.60 02 59 34.98
Declination -07 21 34.90 (0.1) -07 21 34.29 -07 21 34.88 (0.2) -07 21 34.90 -07 21 34.29 (0.1) -07 21 34.27 -07 21 30.24 -07 21 34.23
Spectral type DB DB DB DBZ DBZCOOL DBZH: DB
Effective temperature [K] 15228.0 15404.0 13738.0 15433.0 (74) 14174.0 (787) 16128.0 (124) 15565.0 (139)
log(g) [cgs] 7.76 8.08 7.95 8.00 (0) 8.02 (0.08) 8.27 (0.08) 8.19 (0.1)
Mass [M] 0.461 0.635 0.559 0.6 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 0.2414
log(H/He) <-6.392 <-5.37
log(C/He)
log(Ca/He) -6.77 (0.2)
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] 4.50 (0.1) 4.41 (0.3) 4.50 4.50 (0.1)
Distance [pc] 222.42 (7) 226.79 (13) 235.00 222.42 222.42 (7)
Composition He
Proper motion (right ascension) [mas/yr] 57.58419355 (0.2) 57.87362004 (0.4) 57.584 (0.2) 60.5
Proper motion (declination) [mas/yr] -37.86255968 (0.2) -37.70350115 (0.3) -37.863 (0.2) -37.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.00
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.03 (0.01) 18.03 (0.01) 18.00 (0.02) 18.00 18.02 (0.02)
g magnitude 18.05 (0.006) 18.05 (0.006) 18.03 (0.02) 18.02 18.05 (0.02)
r magnitude 18.32 (0.008) 18.32 (0.008) 18.32 (0.02) 18.32 18.33 (0.02)
i magnitude 18.54 (0.01) 18.55 (0.01) 18.53 (0.02) 18.53 18.56 (0.02)
z magnitude 18.84 (0.06) 18.84 (0.06) 18.81 (0.06) 18.83 18.80 (0.06)
G magnitude 18.18 (0.01) 18.22 18.18 18.18 (0.003)
BP magnitude 18.15 (0.01) 18.10
RP magnitude 18.25 (0.05) 18.19
Pan g magnitude 18.09 (0.004)
Pan r magnitude 18.33 (0.006)
Pan i magnitude 18.57 (0.005)
Pan z magnitude 18.78 (0.01)
Pan y magnitude 18.92 (0.02)
E(B-V) 0.020

* 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.