SDSS J230201.46-002531.8

All names: SDSS J230201.47-002531.9, Gaia DR3 2650893431869856512, Gaia EDR3 2650893431869856512, SDSS J230201.47-002531.90, WD 2259-006, GALEX J230201.4-002531, SDSS J230201.46-002531.8, Gaia DR2 2650893431869856512

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 23 02 01.47 (0.5) 23 02 01.46 23 02 01.47 (0.6) 23 02 01.46 (0.5) 23 02 01.47 23 02 00.94 23 02 01.47
Declination -00 25 32.10 (0.6) -00 25 31.91 -00 25 32.09 (0.7) -00 25 31.84 (0.6) -00 25 31.87 -00 25 27.12 -00 25 31.88
Spectral type DB DB DB DB DB DB
Effective temperature [K] 16999.0 18352.0 12706.0 16901.0 (584) 16390.0 (618)
log(g) [cgs] 8.21 7.71 7.18 7.84 (0.4) 7.70 (0.3)
Mass [M] 0.722 0.444 0.251 0.441 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.1490
log(H/He) <-5.54
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] 0.71 (0.7) 1.16 (0.8) 0.71 (0.7)
Distance [pc] 1403.54 (1438) 864.53 (624) 1403.51 (1438)
Composition He
Proper motion (right ascension) [mas/yr] 3.447551292 (0.7) 3.526937264 (1) 3.448 (0.7)
Proper motion (declination) [mas/yr] -16.40194203 (0.7) -19.1381218 (1) -16.402 (0.7)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.06 (0.05) 20.02 (0.05) 20.03 (0.07) 20.12 20.04 (0.07)
g magnitude 20.08 (0.02) 20.11 (0.02) 20.12 (0.03) 20.12 20.12 (0.03)
r magnitude 20.38 (0.03) 20.41 (0.03) 20.43 (0.03) 20.42 (0.03)
i magnitude 20.57 (0.04) 20.61 (0.04) 20.61 (0.04) 20.59 (0.04)
z magnitude 20.67 (0.2) 21.20 (0.3) 21.22 (0.3) 21.20 (0.3)
G magnitude 20.23 (0.1) 20.30 20.23 (0.007)
BP magnitude 20.30 (0.1) 20.13
RP magnitude 20.25 (0.1) 20.39
Pan g magnitude 20.13 (0.02)
Pan r magnitude 20.30 (0.02)
Pan i magnitude 20.60 (0.03)
Pan z magnitude 20.65 (0.06)
Pan y magnitude 20.73 (0.2)
E(B-V) 0.050

* 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.