SDSS J101806.58+455830.3

All names: Gaia EDR3 809480221515659008, Gaia DR3 809480221515659008, SDSS J101806.59+455830.3, Gaia DR2 809480217218362880, LAMOST J101806.59+455830.3, SDSS J101806.58+455830.3, GALEX J101806.5+455830, WD 1015+462, SDSS J101806.58+455830.4, LAMOST J101806.60+455830.36, LAMOST J101806.60+455830.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Guo et al. 2015 Zhao et al. 2013 Tremblay et al. 2011 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 06.57 (0.07) 10 18 06.59 10 18 06.57 (0.09) 10 18 06.60 10 18 06.57 10 18 06.59 (0.07) 10 18 06.59 10 18 06.02 10 18 06.59
Declination 45 58 30.30 (0.08) 45 58 30.35 45 58 30.30 (0.1) 45 58 30.36 45 58 30.30 45 58 30.41 (0.08) 45 58 30.33 45 58 28.20 45 58 30.31
Spectral type DA DA DA DA DA DA_auto DA DA DA
Effective temperature [K] 17760.0 21485.0 (286) 22475.0 (1541) 20800.0 (190) 18870.0 (709) 19984.0 (143) 20331.0 (139)
log(g) [cgs] 7.88 8.03 (0.05) 8.36 (0.2) 7.98 (0.03) 8.00 (0.04) 7.93 (0.02) 7.96 (0.02)
Mass [M] 0.554 0.65 (0.03) 0.85 (0.1) 0.61 (0.02) 0.622 (0.03) 0.603 (0.009)
log(Luminosity) [L]
Cooling age [Gyr] 0.0878 0.1010 (0.06) 0.0562
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 4.37 (0.1) 4.17 (0.1) 4.37 4.37 (0.1)
Distance [pc] 229.09 (5) 239.77 (8) 201.00 229.09 229.09 (5)
Composition H H
Proper motion (right ascension) [mas/yr] -14.93838634 (0.08) -15.21292011 (0.2) -14.938 (0.08) -12.0
Proper motion (declination) [mas/yr] -7.261513331 (0.1) -7.085261328 (0.3) -7.262 (0.1) -9.2
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.62 (0.01) 17.61 17.62 (0.01) 17.58 (0.01) 17.58 17.58 (0.01)
g magnitude 17.53 (0.005) 17.55 17.53 (0.005) 17.55 (0.03) 17.55 17.53 (0.03)
r magnitude 17.90 (0.006) 17.90 17.90 (0.006) 17.87 (0.03) 17.87 17.86 (0.03)
i magnitude 18.18 (0.009) 18.19 18.18 (0.009) 18.23 (0.03) 18.23 18.22 (0.03)
z magnitude 18.47 (0.03) 18.47 18.47 (0.03) 18.52 (0.04) 18.53 18.53 (0.04)
G magnitude 17.74 (0.008) 17.76 17.74 17.74 (0.003)
BP magnitude 17.66 (0.008) 17.64
RP magnitude 17.88 (0.02) 17.87
Pan g magnitude 17.57 (0.01)
Pan r magnitude 17.91 (0.003)
Pan i magnitude 18.22 (0.003)
Pan z magnitude 18.48 (0.01)
Pan y magnitude 18.56 (0.03)
E(B-V) 0.014

* 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.