KPD 1856+2301

All names: TIC 428914158, UCAC4 566-074792, Gaia DR3 4533039639629373824, KPD1856+2301, GALEX J185822.0+230547, Gaia DR2 4533039639629373824, KPD 1856+2301, 2MASS J18582202+2305467

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 18 58 22.01 18 58 22.02 (0.01)
Declination 23 05 47.32 23 05 46.75 (0.02)
Spectral type sdO sdO
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] 0.27 (0.04) 0.29 (0.03)
Distance [pc] 3716.09 (515) 3451.85 (331)
Composition
Proper motion (right ascension) [mas/yr] -0.676 (0.05) -0.629 (0.02)
Proper motion (declination) [mas/yr] -8.729 (0.06) -8.791 (0.03)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.65
V magnitude 15.52
R magnitude 15.85 (0.1)
I magnitude
J magnitude 15.47 (0.06) 15.47 (0.06)
H magnitude 15.34 (0.1) 15.34 (0.1)
K magnitude 15.21 (0.1) 15.21 (0.1)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.51 (0.0005) 15.49 (0.003)
BP magnitude 15.51 (0.003)
RP magnitude 15.39 (0.002)
Pan g magnitude 15.54 (0.002)
Pan r magnitude 15.60 (0.002)
Pan i magnitude 15.73 (0.003)
Pan z magnitude 15.85 (0.0008)
Pan y magnitude 15.94 (0.006)
E(B-V) 0.262

* 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.