All names: BPS CS 30308-0017, 2MASS J20431316-4350100, TIC 91233741, Gaia DR2 6675436259631424896, UCAC4 231-181663, EC20398-4400, Gaia DR3 6675436259631424896, Gaia EDR3 6675437457927241856, EC 20398-4400
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 43 19.32 (0.7) | 20 43 13.11 | 20 43 13.17 (0.03) | ||
| Declination | -43 50 35.18 (0.5) | -43 50 09.53 | -43 50 10.00 (0.02) | ||
| 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] | 1.52 (0.9) | 1.01 (0.07) | 0.89 (0.04) | |
| Distance | [pc] | 656.04 (400) | 994.63 (67) | 1128.41 (45) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.25 (0.9) | -16.418 (0.1) | -16.345 (0.03) | |
| Proper motion (declination) | [mas/yr] | -9.651 (0.8) | -16.052 (0.07) | -16.255 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.76 (0.01) | ||||
| V magnitude | 14.99 (0.01) | ||||
| R magnitude | 15.09 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 14.82 (0.03) | 14.82 (0.03) | |||
| H magnitude | 14.48 (0.04) | 14.48 (0.04) | |||
| K magnitude | 14.50 (0.09) | 14.50 (0.09) | |||
| u magnitude | |||||
| g magnitude | 14.78 (0.03) | ||||
| r magnitude | 15.13 (0.04) | ||||
| i magnitude | 15.37 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 20.44 (0.008) | 14.89 (0.0007) | 14.87 (0.003) | ||
| BP magnitude | 20.67 (0.1) | 14.75 (0.008) | |||
| RP magnitude | 19.82 (0.1) | 14.97 (0.003) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.023 | ||||
* 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.