GALEX J173056.7+082234

All names: Gaia DR2 4490278769124851712, SDSSJ173056.75+082235.1, GALEX J173056.7+082234, SDSS J173056.74+082235.0, Gaia DR3 4490278769124851712

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 17 30 56.75 17 30 56.74 (0.05)
Declination 08 22 35.10 08 22 35.08 (0.05)
Spectral type sdB sdB
Effective temperature [K] 26975.0 (1277)
log(g) [cgs] 5.29 (0.2)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.09 (0.1) 0.16 (0.08)
Distance [pc] 11363.64 (16387) 6410.26 (3131)
Composition
Proper motion (right ascension) [mas/yr] -0.065 (0.2) -0.027 (0.07)
Proper motion (declination) [mas/yr] -1.187 (0.2) -1.436 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.99 (0.009) 16.99 (0.009)
g magnitude 17.02 (0.004) 17.02 (0.004)
r magnitude 17.42 (0.006) 17.42 (0.006)
i magnitude 17.69 (0.007) 17.69 (0.007)
z magnitude 18.00 (0.02) 18.00 (0.02)
G magnitude 17.24 (0.001) 17.21 (0.003)
BP magnitude 17.09 (0.01)
RP magnitude 17.38 (0.01)
Pan g magnitude 17.10 (0.002)
Pan r magnitude 17.42 (0.006)
Pan i magnitude 17.72 (0.004)
Pan z magnitude 17.95 (0.005)
Pan y magnitude 18.11 (0.01)
E(B-V) 0.140

* 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.