All names: 2MASS J20225291-3110373, UCAC4 295-233358, Gaia DR2 6796324883046836480, GALEX J202252.8-311037, TIC 34614786, Gaia DR3 6796324883046836480, Gaia EDR3 6796336561061829888, EC20197-3120, EC 20197-3120
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 22 43.68 (0.4) | 20 22 52.77 | 20 22 52.90 (0.04) | ||
| Declination | -31 10 45.94 (0.4) | -31 10 37.31 | -31 10 37.28 (0.02) | ||
| Spectral type | sdB+F | sdB+F | |||
| 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] | 1.13 (0.5) | 0.46 (0.05) | 0.43 (0.04) | |
| Distance | [pc] | 884.88 (420) | 2185.79 (251) | 2341.92 (212) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -6.188 (0.6) | 2.507 (0.08) | 2.704 (0.05) | |
| Proper motion (declination) | [mas/yr] | -13.991 (0.5) | -10.168 (0.05) | -10.207 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.77 | ||||
| V magnitude | 15.72 | ||||
| R magnitude | 15.72 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.00 (0.04) | 15.00 (0.04) | |||
| H magnitude | 14.69 (0.06) | 14.69 (0.06) | |||
| K magnitude | 14.91 (0.2) | 14.91 (0.2) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 19.94 (0.006) | 15.54 (0.0007) | 15.52 (0.003) | ||
| BP magnitude | 20.20 (0.1) | 15.61 (0.005) | |||
| RP magnitude | 19.42 (0.07) | 15.30 (0.002) | |||
| Pan g magnitude | 15.63 (0) | ||||
| Pan r magnitude | 15.60 (0.002) | ||||
| Pan i magnitude | 15.63 (0.003) | ||||
| Pan z magnitude | 15.64 (0) | ||||
| Pan y magnitude | 15.68 (0.01) | ||||
| E(B-V) | 0.061 | ||||
* 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.