All names: EC 20289-4415, 2MASS J20322136-4405367, UCAC4 230-186932, GALEX J203221.3-440536, Gaia DR2 6675945058637750528, Gaia DR3 6675945058637750528, Gaia EDR3 6675945058637750528, TIC 90936519, BPS CS 22943-0198, BPSCS22943-198
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 32 21.41 (0.04) | 20 32 21.40 | 20 32 21.40 (0.04) | ||
| Declination | -44 05 36.98 (0.03) | -44 05 36.93 | -44 05 36.89 (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] | 0.58 (0.06) | 0.42 (0.08) | 0.58 (0.06) | |
| Distance | [pc] | 1737.92 (176) | 2352.94 (461) | 1737.92 (176) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 6.575 (0.06) | 6.55 (0.1) | 6.575 (0.06) | |
| Proper motion (declination) | [mas/yr] | -5.247 (0.04) | -5.035 (0.08) | -5.247 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.53 | ||||
| V magnitude | 15.70 | ||||
| R magnitude | 15.83 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 16.41 (0.1) | 16.41 (0.1) | |||
| H magnitude | 16.40 (0.2) | 16.40 (0.2) | |||
| K magnitude | 16.47 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.71 (0.003) | 15.72 (0.0007) | 15.71 (0.003) | ||
| BP magnitude | 15.58 (0.003) | 15.53 (0.009) | |||
| RP magnitude | 15.95 (0.006) | 15.94 (0.005) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.024 | ||||
* 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.