A2 275

All names: Gaia EDR3 1464652911010759552, SDSS J125901.53+303238.7, OMHR 136416, US 90, SDSS J125901.54+303238.8, Gaia DR2 1464652911010759552, SDSS J125901.54+303238.80, PB 3183, SDSS J125901.51+303238.9, OMHR J125901.67+303238.1, [BCF91] 253, Gaia DR3 1464652911010759552, A2 275, GALEX J125901.5+303238

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 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 59 01.50 (0.1) 12 59 01.53 12 59 01.51 (0.2) 12 59 01.50 12 59 01.55 (0.1) 12 59 01.54
Declination 30 32 39.05 (0.1) 30 32 38.78 30 32 39.04 (0.1) 30 32 39.05 30 32 38.76 (0.1) 30 32 38.79
Spectral type DBA DB DBA DBA DB
Effective temperature [K] 12917.0 13011.0 12266.0 13530.0 (68) 12570.0 (539) 13429.0 (225)
log(g) [cgs] 7.71 8.00 7.90 8.00 (0) 7.96 (0.07) 8.42 (0.2)
Mass [M] 0.433 0.583 0.528 0.563 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 0.3128
log(H/He) -5.129 -4.99 (0.2)
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] 4.24 (0.2) 4.14 (0.3) 4.24 4.24 (0.2)
Distance [pc] 236.02 (12) 241.34 (15) 248.00 236.02 236.02 (12)
Composition He
Proper motion (right ascension) [mas/yr] -34.14374272 (0.2) -34.03065404 (0.3) -34.144 (0.2)
Proper motion (declination) [mas/yr] 17.97318661 (0.2) 17.91042081 (0.3) 17.973 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.50
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.41 (0.02) 18.41 (0.02) 18.43 (0.04)
g magnitude 18.44 (0.007) 18.44 (0.007) 18.47 (0.02)
r magnitude 18.60 (0.009) 18.59 (0.009) 18.63 (0.02)
i magnitude 18.84 (0.01) 18.84 (0.01) 18.88 (0.03)
z magnitude 19.10 (0.06) 19.10 (0.06) 19.13 (0.06)
G magnitude 18.51 (0.02) 18.54 18.51 18.51 (0.003)
BP magnitude 18.51 (0.02) 18.50
RP magnitude 18.56 (0.03) 18.57
Pan g magnitude 18.44 (0.007)
Pan r magnitude 18.65 (0.006)
Pan i magnitude 18.86 (0.005)
Pan z magnitude 19.04 (0.01)
Pan y magnitude 19.15 (0.03)
E(B-V) 0.011

* 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.