CD-23 15853

All names: TIC 241982127, LSE21, ALS 18889, Gaia DR2 6863734326040601856, Gaia DR3 6863734326040601856, 2MASS J19553821-2313421, LSE 21, uvby98 610260021, GALEX J195538.1-231338, CD-23 15853, TYC 6891-1410-1, GSC 06891-01410, Gaia EDR3 6863734326040601856

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 19 55 38.24 (0.04) 19 55 38.21 19 55 38.23 (0.04)
Declination -23 13 42.77 (0.03) -23 13 41.62 -23 13 42.23 (0.03)
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] 4.35 (0.05) 4.36 (0.08) 4.35 (0.05)
Distance [pc] 229.84 (3) 229.54 (4) 229.84 (3)
Composition
Proper motion (right ascension) [mas/yr] 12.453 (0.05) 12.756 (0.1) 12.453 (0.05)
Proper motion (declination) [mas/yr] -33.851 (0.03) -33.744 (0.08) -33.851 (0.03)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 11.39 (0.07)
V magnitude 11.64 (0.1)
R magnitude
I magnitude
J magnitude 12.11 (0.02) 12.11 (0.02)
H magnitude 12.12 (0.02) 12.12 (0.02)
K magnitude 12.14 (0.03) 12.14 (0.03)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 11.68 (0.003) 11.69 (0.0009) 11.68 (0.003)
BP magnitude 11.55 (0.003) 11.47 (0.008)
RP magnitude 11.91 (0.004) 11.90 (0.001)
Pan g magnitude 11.48
Pan r magnitude 11.87
Pan i magnitude 12.18
Pan z magnitude 12.42
Pan y magnitude 12.66 (0.01)
E(B-V) 0.077

* 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.