All names: GALEXJ20228-6525, EC 20182-6534, UCAC2 3212111, Gaia DR2 6429036528482072576, 2MASS J20225129-6525203, SBC9 3342, TIC 466277784, UCAC3 50-391387, Gaia EDR3 6429036528482072576, Gaia DR3 6429036528482072576, UCAC4 123-178717, GALEX J202251.1-652521
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 22 51.27 (0.01) | 20 22 51.10 | 20 22 51.30 (0.01) | ||
| Declination | -65 25 20.56 (0.02) | -65 25 21.09 | -65 25 20.44 (0.02) | ||
| Spectral type | sdB+WD | 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] | 1.66 (0.03) | 1.58 (0.05) | 1.66 (0.03) | |
| Distance | [pc] | 601.54 (1e+01) | 634.44 (20) | 601.54 (1e+01) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -12.31 (0.02) | -12.133 (0.05) | -12.31 (0.02) | |
| Proper motion (declination) | [mas/yr] | -7.849 (0.02) | -7.867 (0.07) | -7.849 (0.02) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.09 | ||||
| V magnitude | 13.29 | ||||
| R magnitude | 13.58 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 13.78 (0.03) | 13.78 (0.03) | |||
| H magnitude | 13.88 (0.02) | 13.88 (0.02) | |||
| K magnitude | 13.86 (0.04) | 13.86 (0.04) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 13.28 (0.003) | 13.30 (0.0009) | 13.28 (0.003) | ||
| BP magnitude | 13.17 (0.003) | 13.12 (0.005) | |||
| RP magnitude | 13.50 (0.006) | 13.50 (0.005) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.034 | ||||
* 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.