All names: UCAC4 200-187087, EC20155-5019, TIC 166469020, 2MASS J20191280-5009533, EC 20155-5019, GALEX J201912.8-500953, Gaia DR2 6667704627008655872, Gaia DR3 6667704627008655872
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 19 12.71 | 20 19 12.83 (0.05) | ||
| Declination | -50 09 52.45 | -50 09 52.92 (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] | 0.37 (0.1) | 0.48 (0.06) | |
| Distance | [pc] | 2715.92 (701) | 2092.93 (273) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.422 (0.1) | 6.4 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.15 (0.1) | -3.017 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.03 | |||
| V magnitude | 16.21 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.36 (0.1) | 16.36 (0.1) | ||
| H magnitude | 16.23 (0.3) | 16.23 (0.3) | ||
| K magnitude | 15.24 (0.2) | 15.24 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.17 (0.002) | 16.14 (0.003) | ||
| BP magnitude | 16.02 (0.007) | |||
| RP magnitude | 16.27 (0.005) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.027 | |||
* 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.