CD-55 317

All names: PPM 330960, CD-55 317, CPD-55 284, TYC 8477-716-1, 2MASS J01201284-5517522, Gaia DR3 4914020040683594624, GSC 08477-00716, Gaia EDR3 4914020040683594624, EC 01181-5533, Gaia DR2 4914020040683594624, JL241, uvby98 620022241, TIC 206584346, JL 241

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 01 20 12.92 (0.03) 01 20 12.91 01 20 12.85 (0.03)
Declination -55 17 52.21 (0.03) -55 17 51.92 -55 17 52.12 (0.03)
Spectral type sdO sdB/sdOB
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] 4.01 (0.04) 3.97 (0.05) 4.01 (0.04)
Distance [pc] 249.41 (2) 251.92 (3) 249.41 (2)
Composition
Proper motion (right ascension) [mas/yr] 35.299 (0.04) 35.209 (0.07) 35.299 (0.04)
Proper motion (declination) [mas/yr] -5.231 (0.04) -4.945 (0.07) -5.231 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 11.72 (0.06)
V magnitude 12.08 (0.2)
R magnitude
I magnitude
J magnitude 12.70 (0.03) 12.70 (0.03)
H magnitude 12.88 (0.03) 12.88 (0.03)
K magnitude 12.92 (0.04) 12.92 (0.04)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 11.94 (0.003) 11.96 (0.0006) 11.94 (0.003)
BP magnitude 11.79 (0.003) 11.72 (0.01)
RP magnitude 12.26 (0.004) 12.26 (0.002)
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.008

* 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.