SDSS J084028.87+330039.7

All names: Gaia DR2 710270737583342336, SDSS J084028.87+330039.6, SDSS J084028.87+330039.7, Gaia DR3 710270737583342336, Gaia EDR3 710270737583342336, GALEX J084028.7+330037

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Gaia DR2 Stilism Simbad Kleinman et al. 2013
Right ascension 08 40 28.84 (1) 08 40 28.85 (1) 08 40 28.88 (1) 08 40 28.87
Declination 33 00 39.75 (0.5) 33 00 39.74 (0.6) 33 00 39.59 (0.5) 33 00 39.67
Spectral type DA DA
Effective temperature [K] 8652.0 (126)
log(g) [cgs] 8.38 (0.2)
Mass [M☉] 0.827 (0.1)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.62 (2) 0.92 (2) 0.62 (2)
Distance [pc] 1605.33 (4053) 1086.01 (2330) 1605.39 (4054)
Composition
Proper motion (right ascension) [mas/yr] -24.01071119 (2) -21.567 (3) -24.011 (2)
Proper motion (declination) [mas/yr] 10.02535106 (0.9) 10.342 (1) 10.025 (0.9)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.32 (0.1) 21.32 (0.1)
g magnitude 20.86 (0.04) 20.86 (0.04)
r magnitude 20.82 (0.04) 20.82 (0.04)
i magnitude 20.96 (0.07) 20.96 (0.07)
z magnitude 21.23 (1)
G magnitude 20.77 (0.08) 20.84 20.77 (0.008)
BP magnitude 20.77 (0.08) 20.65
RP magnitude 20.35 (0.1) 20.07
Pan g magnitude 20.84 (0.04)
Pan r magnitude 20.83 (0.04)
Pan i magnitude 20.83 (0.05)
Pan z magnitude 20.94 (0.05)
Pan y magnitude
E(B-V) 0.025

* 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.