All names: GALEX J211712.3-412211, Gaia DR2 6580759168790524032, BPS CS 30492-0125, UCAC4 244-183485, BPSCS30492-125, EC 21139-4134, Gaia DR3 6580759168790524032, 2MASS J21171238-4122114, TIC 159747831
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 17 12.37 | 21 17 12.39 (0.04) | ||
| Declination | -41 22 11.78 | -41 22 11.49 (0.03) | ||
| 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] | 0.77 (0.08) | 0.78 (0.05) | |
| Distance | [pc] | 1290.49 (138) | 1289.49 (81) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 5.478 (0.1) | 5.471 (0.04) | |
| Proper motion (declination) | [mas/yr] | -8.284 (0.08) | -8.339 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.47 (0.03) | |||
| V magnitude | 14.68 (0.08) | |||
| R magnitude | 15.00 (0.07) | |||
| I magnitude | ||||
| J magnitude | 15.18 (0.04) | 15.18 (0.04) | ||
| H magnitude | 15.47 (0.1) | 15.47 (0.1) | ||
| K magnitude | 15.62 (0.2) | 15.62 (0.2) | ||
| u magnitude | ||||
| g magnitude | 14.46 (0.03) | |||
| r magnitude | 14.92 (0.03) | |||
| i magnitude | 15.24 (0.1) | |||
| z magnitude | ||||
| G magnitude | 14.68 (0.0005) | 14.66 (0.003) | ||
| BP magnitude | 14.49 (0.007) | |||
| RP magnitude | 14.91 (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.