GALEX J082830.3+165747

All names: UCAC4 535-047344, SDSS J082830.33+165746.4, SDSSJ082830.33+165746.5, GALEX J082830.3+165747, Gaia DR3 659015697386287360, [BGK2006] J082830.33+165746.5, Gaia DR2 659015697386287360, SDSS J082830.33+165746.5

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 08 28 30.33 08 28 30.33 (0.06)
Declination 16 57 46.50 16 57 46.51 (0.04)
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] 0.15 (0.09) 0.17 (0.08)
Distance [pc] 6872.85 (4407) 5783.69 (2572)
Composition
Proper motion (right ascension) [mas/yr] -0.474 (0.2) -0.317 (0.07)
Proper motion (declination) [mas/yr] 0.661 (0.1) 0.71 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.34 (0.07)
V magnitude 16.43 (0.09)
R magnitude 15.90 (0.4)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.61 (0.007) 16.61 (0.007)
g magnitude 16.22 (0.004) 16.22 (0.004)
r magnitude 16.55 (0.004) 16.55 (0.004)
i magnitude 16.81 (0.005) 16.81 (0.005)
z magnitude 17.04 (0.01) 17.04 (0.01)
G magnitude 16.42 (0.001) 16.40 (0.003)
BP magnitude 16.31 (0.005)
RP magnitude 16.49 (0.007)
Pan g magnitude 16.29 (0.004)
Pan r magnitude 16.57 (0.004)
Pan i magnitude 16.83 (0.004)
Pan z magnitude 17.03 (0.005)
Pan y magnitude 17.13 (0.003)
E(B-V) 0.035

* 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.