SDSS J104043.86+375306.5

All names: SDSS J104043.85+375306.2, SDSS J104043.85+375306.4, SDSS J104043.86+375306.50, SDSS J104043.86+375306.5, Gaia EDR3 752042863655103360, GALEX J104043.8+375306, Gaia DR2 752042863655103360, Gaia DR3 752042863655103360

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 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 10 40 43.85 (0.2) 10 40 43.86 10 40 43.85 (0.3) 10 40 43.86 (0.2) 10 40 43.86
Declination 37 53 06.07 (0.2) 37 53 06.49 37 53 06.08 (0.3) 37 53 06.64 (0.2) 37 53 06.50
Spectral type DB DB DB DB
Effective temperature [K] 16406.0 17325.0 14455.0 16553.0 (197) 16639.0 (209)
log(g) [cgs] 8.14 8.27 8.02 8.08 (0.1) 8.21 (0.1)
Mass [M] 0.675 0.758 0.6 0.713 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.2303
log(H/He) <-5.878 <-4.75
log(C/He)
log(Ca/He) <-5.99
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] 2.85 (0.3) 2.72 (0.4) 2.85 (0.3)
Distance [pc] 351.40 (37) 367.01 (50) 395.00 351.41 (37)
Composition He
Proper motion (right ascension) [mas/yr] -7.34521554 (0.3) -7.33497558 (0.5) -7.345 (0.3)
Proper motion (declination) [mas/yr] -36.11127626 (0.3) -35.58516171 (0.5) -36.111 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.96 (0.02) 18.96 (0.02) 18.98 (0.03)
g magnitude 19.05 (0.01) 19.05 (0.01) 19.05 (0.02)
r magnitude 19.36 (0.01) 19.36 (0.01) 19.37 (0.02)
i magnitude 19.63 (0.02) 19.63 (0.02) 19.65 (0.02)
z magnitude 19.77 (0.08) 19.77 (0.08) 19.78 (0.07)
G magnitude 19.21 (0.03) 19.25 19.21 (0.004)
BP magnitude 19.17 (0.03) 19.11
RP magnitude 19.21 (0.06) 19.26
Pan g magnitude 19.11 (0.006)
Pan r magnitude 19.34 (0.02)
Pan i magnitude 19.62 (0.006)
Pan z magnitude 19.84 (0.02)
Pan y magnitude 19.78 (0.08)
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.