All names: GALEX J222150.0-845438, JL 102, GALEX J222150.2-845438, Gaia DR2 6343834891408545152, Gaia DR3 6343834891409105664, GALEX J222151.1-845438, 2MASS J22215055-8454381, EC 22137-8509, EC22137-8509, GALEX J222149.7-845437, TIC 401795856, PN G306.5-31.1
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 21 50.37 | 22 21 50.76 (0.04) | ||
| Declination | -84 54 38.41 | -84 54 38.36 (0.04) | ||
| 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] | 0.62 (0.05) | 0.64 (0.04) | |
| Distance | [pc] | 1619.96 (122) | 1564.46 (105) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -8.107 (0.08) | -8.058 (0.05) | |
| Proper motion (declination) | [mas/yr] | 0.794 (0.08) | 0.69 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.99 | |||
| V magnitude | 16.08 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.32 (0.1) | 16.32 (0.1) | ||
| H magnitude | 15.96 (0.2) | 15.96 (0.2) | ||
| K magnitude | 15.91 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.05 (0.001) | 16.04 (0.003) | ||
| BP magnitude | 15.94 (0.007) | |||
| RP magnitude | 16.10 (0.003) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.108 | |||
* 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.