All names: GALEX J211850.7-413048, BPS CS 22937-0087, EC21156-4143, 2MASS J21185069-4130495, BPS CS 30492-0126, Gaia DR3 6580587198299411200, Gaia DR2 6580587198299411200, EC 21156-4143, TIC 159805154
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 18 50.69 | 21 18 50.70 (0.02) | ||
| Declination | -41 30 49.86 | -41 30 49.62 (0.02) | ||
| Spectral type | sdB+G | sdB+G | ||
| 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] | 0.56 (0.06) | 0.62 (0.03) | |
| Distance | [pc] | 1783.48 (178) | 1622.85 (76) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 3.891 (0.07) | 3.648 (0.03) | |
| Proper motion (declination) | [mas/yr] | -13.531 (0.06) | -13.496 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.14 | |||
| V magnitude | 14.90 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.23 (0.03) | 14.23 (0.03) | ||
| H magnitude | 13.92 (0.04) | 13.92 (0.04) | ||
| K magnitude | 13.88 (0.04) | 13.88 (0.04) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.80 (0.0005) | 14.78 (0.003) | ||
| BP magnitude | 14.87 (0.005) | |||
| RP magnitude | 14.57 (0.002) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.019 | |||
* 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.