SDSS J104240.76+462836.6

All names: Gaia EDR3 830546177109872896, SDSS J104240.76+462836.65, SDSS J104240.76+462836.6, Gaia DR3 830546177109872896, Gaia DR2 830546177109872896

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 10 42 40.70 (0.4) 10 42 40.77 10 42 40.70 (0.5) 10 42 40.77 (0.4)
Declination 46 28 36.80 (0.5) 46 28 36.65 46 28 36.80 (0.9) 46 28 36.57 (0.5)
Spectral type DC: DC: DC: DC DC
Effective temperature [K] 8533.0 8367.0 8632.0 (459)
log(g) [cgs] 8.36 8.30 8.00 (0)
Mass [M] 0.824 0.77
log(Luminosity) [L]
Cooling age [Gyr] 1.6670 1.6470
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 4.39 (0.6) 3.82 (0.9) 4.39 (0.6)
Distance [pc] 227.60 (29) 261.89 (65) 227.60 (29)
Composition
Proper motion (right ascension) [mas/yr] -45.87950988 (0.5) -46.06357275 (0.9) -45.88 (0.5)
Proper motion (declination) [mas/yr] 14.42725089 (0.7) 13.69445855 (1) 14.427 (0.7)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.97 (0.1) 20.92 (0.1) 20.96 (0.1)
g magnitude 20.47 (0.03) 20.47 (0.04) 20.48 (0.03)
r magnitude 20.44 (0.04) 20.45 (0.07) 20.45 (0.04)
i magnitude 20.49 (0.06) 20.49 (0.1) 20.50 (0.06)
z magnitude 20.98 (0.4) 20.95 (0.5) 20.97 (0.4)
G magnitude 20.37 (0.06) 20.44 20.37 (0.006)
BP magnitude 20.48 (0.06) 20.50
RP magnitude 20.08 (0.1) 20.00
Pan g magnitude 20.43 (0.02)
Pan r magnitude 20.41 (0.02)
Pan i magnitude 20.51 (0.02)
Pan z magnitude 20.52 (0.05)
Pan y magnitude 20.36 (0.2)
E(B-V) 0.013

* 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.