WD 1520+011

All names: GALEX J152320.9+005525, SDSS J152320.96+005524.9, SDSS J152320.96+005525.1, WD 1520+011, Gaia EDR3 4420401197405410560, Gaia DR2 4420401197405410560, SDSS J152320.96+005525.2, Gaia DR3 4420401197405410560, SDSS J152320.97+005525.2, SDSS J152320.96+005525.10

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Harris et al. 2003 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 23 20.97 (0.2) 15 23 20.96 15 23 20.97 (0.3) 15 23 20.96 (0.2) 15 23 19.87 15 23 20.96
Declination 00 55 24.77 (0.2) 00 55 25.14 00 55 24.78 (0.4) 00 55 25.19 (0.2) 00 55 22.80 00 55 25.14
Spectral type DB4-5 DB4-5 DB4-5 DB3.7 DB DB
Effective temperature [K] 13758.0 13317.0 11146.0 13365.0 (386)
log(g) [cgs] 8.30 7.50 7.26 8.53 (0.3)
Mass [M] 0.777 0.348 0.265 0.917 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.2319
log(H/He) <-6.207
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] 3.29 (0.3) 2.40 (0.4) 3.29 (0.3)
Distance [pc] 304.25 (25) 416.85 (65) 304.25 (25)
Composition He
Proper motion (right ascension) [mas/yr] 6.753499712 (0.3) 6.236472247 (0.6) 6.753 (0.3)
Proper motion (declination) [mas/yr] -26.31427297 (0.2) -25.44425086 (0.7) -26.314 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.02 (0.02) 19.04 19.02 (0.02) 19.05 19.04 (0.03)
g magnitude 18.98 (0.01) 18.98 18.98 (0.01) 18.98 18.99 (0.02)
r magnitude 19.19 (0.01) 19.18 19.19 (0.01) 19.19 19.21 (0.02)
i magnitude 19.39 (0.02) 19.37 19.39 (0.02) 19.38 19.40 (0.02)
z magnitude 19.64 (0.07) 19.43 19.64 (0.07) 19.43 19.66 (0.07)
G magnitude 19.08 (0.02) 19.12 19.08 (0.004)
BP magnitude 19.09 (0.02) 19.19
RP magnitude 19.08 (0.05) 19.07
Pan g magnitude 19.02 (0.02)
Pan r magnitude 19.22 (0.01)
Pan i magnitude 19.37 (0.02)
Pan z magnitude 19.53 (0.02)
Pan y magnitude 19.63 (0.03)
E(B-V) 0.047

* 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.