SDSS J101806.61+304126.3

All names: GALEX J101806.6+304125, SDSS J101806.61+304126.37, Gaia EDR3 742613795532642432, Gaia DR2 742613795532642432, Gaia DR3 742613795532642432, SDSS J101806.61+304126.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Simbad
Right ascension 10 18 06.59 (0.7) 10 18 06.61 10 18 06.59 (2) 10 18 06.60 (0.7)
Declination 30 41 25.90 (0.6) 30 41 26.36 30 41 25.92 (1) 30 41 26.53 (0.6)
Spectral type DC: DC: DC: DC
Effective temperature [K] 7925.0 7732.0 8511.0 (280)
log(g) [cgs] 7.93 7.85 8.00 (0)
Mass [M] 0.556 0.491
log(Luminosity) [L]
Cooling age [Gyr] 1.0050 1.0010
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.90 (0.9) 2.82 (1) 0.90 (0.9)
Distance [pc] 1105.14 (1087) 354.77 (170) 1105.09 (1087)
Composition
Proper motion (right ascension) [mas/yr] -6.085142146 (2) -5.742489807 (4) -6.085 (2)
Proper motion (declination) [mas/yr] -39.27924265 (0.8) -36.52207831 (3) -39.279 (0.8)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.21 (0.09) 21.15 (0.08) 21.15 (0.08)
g magnitude 20.75 (0.03) 20.76 (0.04) 20.76 (0.04)
r magnitude 20.69 (0.04) 20.69 (0.04) 20.69 (0.04)
i magnitude 20.69 (0.05) 20.68 (0.05) 20.68 (0.05)
z magnitude 20.81 (0.2) 20.82 (0.2) 20.82 (0.2)
G magnitude 20.67 (0.1) 20.73 20.67 (0.009)
BP magnitude 20.74 (0.1) 20.64
RP magnitude 20.39 (0.1) 20.28
Pan g magnitude 20.83 (0.02)
Pan r magnitude 20.69 (0.04)
Pan i magnitude 20.77 (0.02)
Pan z magnitude 20.66 (0.02)
Pan y magnitude
E(B-V) 0.021

* 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.