HD 171858

All names: CD-23 14565, CD-2314565, Gaia DR2 4077650785664863360, CPD-23 7164, TD1 22810, TYC 6858-2869-1, YZ 113 12931, SAO 187070, TIC 730507, uvby98 100171858, [SC96] Mis 1466, [SC95] M 707, SBC9 3424, Gaia DR3 4077650785664863360, HD 171858, 2MASS J18375667-2311351, GSC 06858-02869, PPM 268682, GEN# +1.00171858

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 18 37 56.68 18 37 56.67 (0.04)
Declination -23 11 35.19 -23 11 35.19 (0.04)
Spectral type sdB+WD sdB
Effective temperature [K] 27200.0 (800)
log(g) [cgs] 5.30 (0.1)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 7.41 (0.08) 7.22 (0.04)
Distance [pc] 134.91 (1) 138.60 (0.9)
Composition
Proper motion (right ascension) [mas/yr] -18.945 (0.1) -18.975 (0.05)
Proper motion (declination) [mas/yr] -21.659 (0.1) -21.883 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 9.64 (0.03)
V magnitude 9.85 (0.04)
R magnitude
I magnitude
J magnitude 10.32 (0.02) 10.32 (0.02)
H magnitude 10.43 (0.02) 10.43 (0.02)
K magnitude 10.56 (0.02) 10.56 (0.02)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 9.80 (0.0009) 9.80 (0.003)
BP magnitude 9.69 (0.002)
RP magnitude 10.03 (0.002)
Pan g magnitude 9.43
Pan r magnitude 9.92
Pan i magnitude 10.27
Pan z magnitude 10.58
Pan y magnitude 10.82
E(B-V) 0.123

* 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.