SDSS J101821.19+140506.9

All names: SDSS J101821.18+140506.8, WD 1015+143, Gaia DR2 3887152562038524544, SDSS J101821.19+140507.00, SDSS J101821.19+140507.0, Gaia EDR3 3887152562038524544, SDSS J101821.19+140506.9, SDSS J101821.18+140506.9, LAMOST J101821.19+140506.9, GALEX J101821.2+140507, Gaia DR3 3887152562038524544

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 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 10 18 21.17 (0.2) 10 18 21.19 10 18 21.17 (0.2) 10 18 21.17 10 18 21.21 (0.2) 10 18 21.19 10 18 21.10 10 18 21.19
Declination 14 05 06.86 (0.1) 14 05 06.96 14 05 06.87 (0.2) 14 05 06.86 14 05 06.99 (0.1) 14 05 06.96 14 05 03.48 14 05 06.96
Spectral type DB DB DB DB DB DB DB
Effective temperature [K] 14304.0 13293.0 13041.0 14193.0 (98) 12973.0 (688) 15716.0 (270) 14837.0 (192)
log(g) [cgs] 8.07 8.13 8.14 8.00 (0) 8.15 (0.07) 8.77 (0.2) 8.54 (0.1)
Mass [M] 0.633 0.663 0.671 0.68 (0.07) 0.924 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.3795
log(H/He) <-6.297 <-5.5
log(C/He)
log(Ca/He) <-8.13
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] 5.06 (0.2) 4.97 (0.4) 5.06 5.06 (0.2)
Distance [pc] 197.81 (8) 201.33 (14) 232.00 197.81 197.81 (8)
Composition He
Proper motion (right ascension) [mas/yr] -37.14192718 (0.2) -37.14416298 (0.4) -37.142 (0.2) -37.3
Proper motion (declination) [mas/yr] -7.906561238 (0.1) -8.22254987 (0.5) -7.907 (0.1) -14.3
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.19 (0.01) 18.19 (0.01) 18.19 (0.03) 18.18 18.19 (0.03)
g magnitude 18.20 (0.006) 18.20 (0.006) 18.21 (0.01) 18.20 18.21 (0.01)
r magnitude 18.44 (0.008) 18.44 (0.008) 18.50 (0.02) 18.49 18.49 (0.02)
i magnitude 18.65 (0.01) 18.65 (0.01) 18.65 (0.02) 18.64 18.64 (0.02)
z magnitude 18.83 (0.03) 18.84 (0.03) 18.90 (0.05) 18.89 18.89 (0.05)
G magnitude 18.32 (0.02) 18.34 18.32 18.32 (0.004)
BP magnitude 18.29 (0.02) 18.28
RP magnitude 18.39 (0.02) 18.33
Pan g magnitude 18.25 (0.003)
Pan r magnitude 18.45 (0.008)
Pan i magnitude 18.67 (0.008)
Pan z magnitude 18.89 (0.01)
Pan y magnitude 19.05 (0.05)
E(B-V) 0.017

* 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.