All names: TIC 238853890, EC 22438-6922, GALEX J224721.5-690642, Gaia DR2 6384810597398421760, 2MASS J22472166-6906431, EC22438-6922, UCAC4 105-116465, Gaia DR3 6384810597398421760
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 47 21.62 | 22 47 21.69 (0.03) | ||
| Declination | -69 06 42.77 | -69 06 43.31 (0.03) | ||
| Spectral type | sdB | sdB(+F?) | ||
| 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] | 0.35 (0.06) | 0.41 (0.04) | |
| Distance | [pc] | 2843.33 (508) | 2416.04 (224) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 7.163 (0.1) | 7.324 (0.04) | |
| Proper motion (declination) | [mas/yr] | -4.797 (0.1) | -5.018 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.56 (0.08) | |||
| V magnitude | 15.69 (0.01) | |||
| R magnitude | 15.89 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.52 (0.06) | 15.52 (0.06) | ||
| H magnitude | 14.88 (0.1) | 14.88 (0.1) | ||
| K magnitude | 14.98 (0.1) | 14.98 (0.1) | ||
| u magnitude | ||||
| g magnitude | 15.54 (0.01) | |||
| r magnitude | 15.81 (0.1) | |||
| i magnitude | 15.91 (0.06) | |||
| z magnitude | ||||
| G magnitude | 15.64 (0.0007) | 15.63 (0.003) | ||
| BP magnitude | 15.53 (0.009) | |||
| RP magnitude | 15.64 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| 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.