All names: 2MASS J22423129-1941077, PHL 378, GALEX J224231.1-194107, EC 22398-1956, EC22398-1956, Gaia DR3 2401334945546768384, TIC 444152574, UCAC4 352-188815, Gaia DR2 2401334945546768384
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 22 42 31.19 | 22 42 31.25 (0.04) | ||
Declination | -19 41 07.33 | -19 41 08.08 (0.04) | ||
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] | 0.41 (0.08) | 0.35 (0.05) | |
Distance | [pc] | 2457.00 (458) | 2866.15 (386) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 4.877 (0.2) | 5.038 (0.05) | |
Proper motion (declination) | [mas/yr] | -10.641 (0.1) | -11.016 (0.04) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 15.23 (0.01) | |||
V magnitude | 15.48 (0.08) | |||
R magnitude | 14.87 (0.8) | |||
I magnitude | ||||
J magnitude | 16.16 (0.1) | 16.16 (0.1) | ||
H magnitude | 16.07 (0.2) | 16.07 (0.2) | ||
K magnitude | 17.11 | |||
u magnitude | ||||
g magnitude | 15.25 (0.05) | |||
r magnitude | 15.71 (0.04) | |||
i magnitude | ||||
z magnitude | ||||
G magnitude | 15.44 (0.002) | 15.42 (0.003) | ||
BP magnitude | 15.20 (0.01) | |||
RP magnitude | 15.73 (0.004) | |||
Pan g magnitude | 15.25 (0.003) | |||
Pan r magnitude | 15.69 (0.003) | |||
Pan i magnitude | 16.06 (0.002) | |||
Pan z magnitude | 16.34 (0.005) | |||
Pan y magnitude | 16.54 (0.01) | |||
E(B-V) | 0.020 |
* Constant surface field
Spectra without link are available upon request
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.