WD 1502+621

All names: Gaia EDR3 1619267782296323200, SDSS J150347.30+615847.4, WD 1502+621, Gaia DR3 1619267782296323200, Gaia DR2 1619267782296323200, SDSS J150347.30+615847.3, WIRED J150347.29+615847.4, GALEX J150347.2+615847, SDSS J150347.30+615847.40, SDSS J150347.28+615847.3

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 03 47.32 (0.2) 15 03 47.30 15 03 47.32 (0.4) 15 03 47.30 (0.2) 15 03 47.29 15 03 46.39 15 03 47.30
Declination 61 58 47.13 (0.3) 61 58 47.36 61 58 47.13 (0.4) 61 58 47.34 (0.3) 61 58 47.38 61 58 45.48 61 58 47.44
Spectral type DB DB DB DB2.8 DB DB
Effective temperature [K] 17244.0 15354.0 14107.0 17866.0 (437) 18006.0 (579)
log(g) [cgs] 7.97 8.16 8.00 7.95 (0.2) 7.86 (0.2)
Mass [M] 0.577 0.689 0.586 0.516 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.2386
log(H/He) -4.932
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] 2.07 (0.3) 2.13 (0.4) 2.07 (0.3)
Distance [pc] 482.84 (61) 468.69 (84) 482.84 (61)
Composition He
Proper motion (right ascension) [mas/yr] 10.8927624 (0.3) 11.66720279 (0.8) 10.893 (0.3) 11.6
Proper motion (declination) [mas/yr] -13.13013402 (0.4) -12.91980792 (0.8) -13.13 (0.4) -17.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.59 (0.03) 19.59 (0.03) 19.53 (0.03) 19.52 19.54 (0.03)
g magnitude 19.65 (0.01) 19.65 (0.01) 19.67 (0.03) 19.68 19.68 (0.03)
r magnitude 19.99 (0.02) 19.99 (0.02) 20.02 (0.03) 20.04 20.04 (0.03)
i magnitude 20.15 (0.04) 20.15 (0.04) 20.19 (0.04) 20.18 20.19 (0.04)
z magnitude 20.38 (0.1) 20.38 (0.1) 20.47 (0.1) 20.45 20.47 (0.1)
G magnitude 19.79 (0.03) 19.84 19.79 (0.004)
BP magnitude 19.69 (0.03) 19.60
RP magnitude 20.08 (0.06) 20.02
Pan g magnitude 19.69 (0.03)
Pan r magnitude 19.97 (0.02)
Pan i magnitude 20.22 (0.03)
Pan z magnitude 20.46 (0.009)
Pan y magnitude
E(B-V) 0.019

* 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.