All names: TIC 2028269971, Gaia DR3 6620093510077227776, Gaia DR2 6620093510077227776, GALEX J220421.0-255241, TIC 471013767, EC22015-2607, EC 22015-2607
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 04 21.11 | 22 04 21.07 (0.05) | ||
| Declination | -25 52 41.52 | -25 52 41.60 (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] | 0.21 (0.1) | 0.19 (0.07) | |
| Distance | [pc] | 4803.07 (2485) | 5399.57 (1945) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.862 (0.2) | -3.21 (0.06) | |
| Proper motion (declination) | [mas/yr] | -10.476 (0.1) | -10.448 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.60 (0.001) | 16.57 (0.003) | ||
| BP magnitude | 16.48 (0.009) | |||
| RP magnitude | 16.69 (0.007) | |||
| Pan g magnitude | 16.46 (0.003) | |||
| Pan r magnitude | 16.75 (0.003) | |||
| Pan i magnitude | 17.03 (0.005) | |||
| Pan z magnitude | 17.24 (0.003) | |||
| Pan y magnitude | 17.37 (0.009) | |||
| E(B-V) | 0.017 | |||
* 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.