All names: 2MASS J22272832-7420542, UCAC4 079-051488, Gaia DR2 6357884176109654912, GALEX J222728.2-742054, Gaia DR3 6357884176109654912, TIC 317058444, EC 22232-7436, EC22232-7436
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 27 28.22 | 22 27 28.32 (0.02) | ||
| Declination | -74 20 53.66 | -74 20 54.30 (0.02) | ||
| Spectral type | sdB | sdB | ||
| 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] | 0.11 (0.04) | 0.11 (0.03) | |
| Distance | [pc] | 8710.80 (3217) | 9328.36 (2297) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.206 (0.06) | 6.194 (0.03) | |
| Proper motion (declination) | [mas/yr] | -0.823 (0.06) | -0.867 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.61 (0.03) | |||
| V magnitude | 15.47 (0.01) | |||
| R magnitude | 15.75 (0.4) | |||
| I magnitude | ||||
| J magnitude | 15.74 (0.08) | 15.74 (0.08) | ||
| H magnitude | 15.64 (0.2) | 15.64 (0.2) | ||
| K magnitude | 16.35 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.68 (0.0007) | 15.66 (0.003) | ||
| BP magnitude | 15.62 (0.003) | |||
| RP magnitude | 15.71 (0.003) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.031 | |||
* 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.