PG 0822+645

All names: GALEX J082716.5+642224, FBS B 665, WISE J082716.54+642225.1, TIC 73382789, Gaia DR2 1090955885420336128, PG0822+645, PG 0822+645, Gaia DR3 1090955885420336128, WISEA J082716.54+642224.9, FBS 0822+645, 2MASS J08271654+6422252, UCAC4 772-033025

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 08 27 16.56 08 27 16.54 (0.02)
Declination 64 22 25.42 64 22 25.05 (0.03)
Spectral type sdB sdB
Effective temperature [K]
log(g) [cgs]
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.42 (0.05) 0.37 (0.04)
Distance [pc] 2364.07 (295) 2735.98 (288)
Composition
Proper motion (right ascension) [mas/yr] -0.836 (0.07) -0.91 (0.03)
Proper motion (declination) [mas/yr] -6.454 (0.09) -6.336 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.02 (0.09)
V magnitude 15.44 (0.06)
R magnitude 15.84 (0.2)
I magnitude
J magnitude 16.21 (0.1) 16.21 (0.1)
H magnitude 16.10 (0.2) 16.10 (0.2)
K magnitude 15.62
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.44 (0.0007) 15.42 (0.003)
BP magnitude 15.22 (0.007)
RP magnitude 15.70 (0.002)
Pan g magnitude 15.27 (0.002)
Pan r magnitude 15.69 (0.002)
Pan i magnitude 16.04 (0.001)
Pan z magnitude 16.32 (0.002)
Pan y magnitude 16.51 (0.01)
E(B-V) 0.048

* 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.