WD 1501+301

All names: SDSS J150346.99+295651.0, Gaia EDR3 1275981324189764608, WDJ150347.02+295650.62, WD 1501+301, ** LDS 4525B, Gaia DR3 1275981324189764608, GALEX J150346.9+295651, LP 326-74, WDS J15039+2957B, Gaia DR2 1275981324189764608, SDSS J150346.99+295650.9, J1503+2956

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Tremblay et al. 2017 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999) Vincent et al. 2023
Right ascension 15 03 46.91 (0.04) 15 03 46.99 15 03 46.91 (0.05) 15 03 46.91 15 03 47.02 (0.04) 15 03 46.91 15 03 54.12
Declination 29 56 52.13 (0.06) 29 56 51.01 29 56 52.08 (0.07) 29 56 52.13 29 56 50.62 (0.06) 29 56 52.08 29 56 20.40
Spectral type DC DC DC DC DC DC DB DB DC
Effective temperature [K] 6946.0 (40) 6981.0 (37) 7514.0 7244.0 7250.0 6932.0 (62)
log(g) [cgs] 7.64 (0.01) 7.64 (0.01) 7.92 7.81 (21) 7.66 (0.02)
Mass [M] 0.384 (0.009) 0.384 (0.01) 0.549 0.469 0.395 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 1.0400 1.1390 1.1270
log(H/He) -3.4 -3.4
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] 11.99 (0.09) 11.89 (0.1) 11.89 (0.1) 12.56 (0.8) 11.99 11.99 (0.09) 11.89 (0.1)
Distance [pc] 83.39 (0.6) 84.10 (0.8) 84.13 (0.8) 79.62 (5) 83.39 83.39 (0.6) 84.13 (0.8)
Composition He
Proper motion (right ascension) [mas/yr] -86.12185449 (0.05) -86.0110134 (0.1) -86.122 (0.05) -86.0110134
Proper motion (declination) [mas/yr] 94.27780667 (0.07) 94.35148549 (0.2) 94.278 (0.07) 94.35148549
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes
B magnitude
V magnitude 17.70 (0.1)
R magnitude
I magnitude
J magnitude 17.22 (0.03)
H magnitude
K magnitude
u magnitude 18.34 (0.01) 18.34 (0.01) 18.33 (0.01) 18.33 (0.01)
g magnitude 17.84 (0.006) 17.84 (0.006) 17.86 (0.006)
r magnitude 17.72 (0.006) 17.71 (0.006) 17.72 (0.007)
i magnitude 17.72 (0.007) 17.72 (0.007) 17.73 (0.007)
z magnitude 17.79 (0.02) 17.79 (0.02) 17.84 (0.02)
G magnitude 17.69 (0.006) 17.71 17.65 (0.001) 17.69 17.69 (0.003) 17.71
BP magnitude 17.86 (0.006) 17.85 17.85
RP magnitude 17.41 (0.006) 17.41 17.41
Pan g magnitude 17.84 (0.004) 17.84 (0.005)
Pan r magnitude 17.72 (0.002) 17.72 (0.002)
Pan i magnitude 17.73 (0.002) 17.73 (0.002)
Pan z magnitude 17.80 (0.01) 17.80 (0.01)
Pan y magnitude 17.86 (0.01) 17.86 (0.01)
E(B-V) 0.013

* 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.