All names: Gaia DR2 6682997875974362752, UCAC4 264-185145, EC 20356-3725, Gaia DR3 6682997875974362752, GALEX J203852.4-371524, EC20356-3725, 2MASS J20385251-3715234
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 38 52.53 | 20 38 52.46 (0.03) | ||
| Declination | -37 15 23.83 | -37 15 23.98 (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] | 0.21 (0.08) | 0.16 (0.05) | |
| Distance | [pc] | 4810.00 (1939) | 6195.79 (1827) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -5.969 (0.1) | -6.058 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.228 (0.07) | -2.258 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.78 | |||
| V magnitude | 15.86 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.16 (0.08) | 16.16 (0.08) | ||
| H magnitude | 16.30 (0.2) | 16.30 (0.2) | ||
| K magnitude | 16.08 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.88 (0.0009) | 15.86 (0.003) | ||
| BP magnitude | 15.77 (0.005) | |||
| RP magnitude | 15.97 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.036 | |||
* 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.