All names: Gaia DR2 6672560177731953408, TIC 129211288, EC 20088-4559, 2MASS J20122087-4550396, BPSCS22943-19, BPS CS 22943-0019, UCAC4 221-182051, Gaia DR3 6672560177731953408, GALEX J201220.8-455039
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 12 20.87 | 20 12 20.90 (0.05) | ||
| Declination | -45 50 39.30 | -45 50 39.58 (0.04) | ||
| 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] | 0.35 (0.08) | 0.33 (0.06) | |
| Distance | [pc] | 2884.34 (628) | 2986.86 (554) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.406 (0.1) | -3.26 (0.05) | |
| Proper motion (declination) | [mas/yr] | -4.243 (0.09) | -4.293 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.57 (0.03) | |||
| V magnitude | 15.82 (0.01) | |||
| R magnitude | 15.78 | |||
| I magnitude | ||||
| J magnitude | 16.51 (0.1) | 16.51 (0.1) | ||
| H magnitude | 16.27 (0.2) | 16.27 (0.2) | ||
| K magnitude | 17.11 | |||
| u magnitude | ||||
| g magnitude | 15.52 (0.01) | |||
| r magnitude | 15.99 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.75 (0.001) | 15.73 (0.003) | ||
| BP magnitude | 15.51 (0.009) | |||
| RP magnitude | 16.02 (0.01) | |||
| 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.