LB 334

All names: LB 334, UCAC2 42250673, GALEXJ17270+2942, TIC 298537971, Gaia DR2 4598718618808752256, UCAC4 599-057750, GALEX J172704.6+294229, 2MASS J17270464+2942291, Gaia DR3 4598718623105968896, SDSS J172704.62+294229.0

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 17 27 04.66 17 27 04.63 (0.02)
Declination 29 42 29.31 29 42 29.08 (0.03)
Spectral type sdO sdB
Effective temperature [K] 37610.0 (1010)
log(g) [cgs] 5.52 (0.1)
Mass [M]
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.42 (0.04) 0.47 (0.03)
Distance [pc] 2390.63 (208) 2115.95 (156)
Composition
Proper motion (right ascension) [mas/yr] -4.886 (0.06) -4.895 (0.03)
Proper motion (declination) [mas/yr] -6.745 (0.07) -6.667 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 14.74 (0.05)
V magnitude 14.98 (0.06)
R magnitude 15.44 (0.2)
I magnitude
J magnitude 15.68 (0.07) 15.68 (0.07)
H magnitude 15.71 (0.2) 15.71 (0.2)
K magnitude 15.70 (0.2) 15.70 (0.2)
u magnitude 14.51 (0.004) 14.43 (0.02)
g magnitude 14.73 (0.004) 14.76 (0.01)
r magnitude 15.26 (0.004) 15.27 (0.01)
i magnitude 15.62 (0.004) 15.64 (0.01)
z magnitude 15.95 (0.007) 15.95 (0.02)
G magnitude 15.02 (0.0007) 15.02 (0.003)
BP magnitude 14.79 (0.008)
RP magnitude 15.30 (0.003)
Pan g magnitude 14.84 (0.004)
Pan r magnitude 15.28 (0.002)
Pan i magnitude 15.63 (0.003)
Pan z magnitude 15.93 (0.005)
Pan y magnitude 16.11 (0.005)
E(B-V) 0.030

* 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.