SDSS J151549.78+463745.8

All names: SDSS J151549.79+463745.8, SDSS J151549.77+463745.9, Gaia DR3 1587718807965970432, SDSS J151549.79+463745.9, Gaia DR2 1587718807965970432, WD 1514+468, SDSS J151549.78+463745.8, Gaia EDR3 1587718807965970432, GALEX J151549.6+463746, SDSS J151549.79+463745.90

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 15 15 49.75 (0.3) 15 15 49.78 15 15 49.76 (0.3) 15 15 49.79 (0.3) 15 15 49.79 15 15 49.44 15 15 49.79
Declination 46 37 45.97 (0.3) 46 37 45.93 46 37 45.97 (0.4) 46 37 45.93 (0.3) 46 37 45.89 46 37 41.16 46 37 45.88
Spectral type DB_A: DBA DB_A: DB DBA DB+MS
Effective temperature [K] 16841.0 16945.0 13754.0 16159.0 (342) 15824.0 (363)
log(g) [cgs] 8.70 8.23 7.93 8.15 (0.2) 8.05 (0.3)
Mass [M] 1.035 0.736 0.549
log(Luminosity) [L]
Cooling age [Gyr] 0.2337
log(H/He) -3.948
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] 2.06 (0.3) 2.12 (0.4) 2.06 (0.3)
Distance [pc] 486.09 (67) 472.25 (91) 486.10 (67)
Composition He
Proper motion (right ascension) [mas/yr] -19.64188965 (0.3) -21.4713197 (0.7) -19.642 (0.3) -18.5
Proper motion (declination) [mas/yr] 2.224789392 (0.3) 0.429804616 (0.8) 2.225 (0.3) 0.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.54 (0.03) 19.54 (0.03) 19.51 (0.03) 19.51 19.53 (0.03)
g magnitude 19.57 (0.01) 19.57 (0.01) 19.59 (0.03) 19.59 19.59 (0.03)
r magnitude 19.87 (0.02) 19.87 (0.02) 19.88 (0.02) 19.87 19.88 (0.02)
i magnitude 20.17 (0.03) 20.17 (0.04) 20.20 (0.04) 20.19 20.19 (0.03)
z magnitude 20.21 (0.1) 20.21 (0.1) 20.22 (0.1) 20.21 20.20 (0.1)
G magnitude 19.76 (0.04) 19.81 19.76 (0.005)
BP magnitude 19.78 (0.04) 19.75
RP magnitude 19.88 (0.07) 20.00
Pan g magnitude 19.65 (0.009)
Pan r magnitude 19.90 (0.008)
Pan i magnitude 20.14 (0.01)
Pan z magnitude 20.30 (0.05)
Pan y magnitude 20.25 (0.2)
E(B-V) 0.021

* 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.