All names: Gaia DR2 6673897424389604736, FAUST 4600, TIC 129224938, GALEX J201241.3-435052, USNO-A1.0 0450-38842338, EC20092-4359, 2MASS J20124145-4350535, Gaia DR3 6673897424389604736, [BBW2000] FT 84, EC 20092-4359
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 12 41.42 | 20 12 41.45 (0.03) | ||
| Declination | -43 50 53.84 | -43 50 53.61 (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] | 0.69 (0.06) | 0.71 (0.04) | |
| Distance | [pc] | 1443.83 (132) | 1402.72 (76) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -10.377 (0.09) | -10.35 (0.04) | |
| Proper motion (declination) | [mas/yr] | 2.933 (0.07) | 3.055 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.44 | |||
| V magnitude | 14.73 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.31 (0.04) | 15.31 (0.04) | ||
| H magnitude | 15.36 (0.07) | 15.36 (0.07) | ||
| K magnitude | 15.46 (0.2) | 15.46 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.68 (0.0008) | 14.66 (0.003) | ||
| BP magnitude | 14.46 (0.009) | |||
| RP magnitude | 14.92 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.028 | |||
* 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.