All names: TIC 126637970, Gaia DR2 6485171957198411264, 2MASS J20585784-4211161, EC 20556-4222, GALEX J205857.8-421116, Gaia DR3 6485171957198411264, UCAC4 240-179733, EC20556-4222
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 58 57.85 | 20 58 57.85 (0.04) | ||
| Declination | -42 11 15.47 | -42 11 16.34 (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] | 0.27 (0.08) | 0.41 (0.06) | |
| Distance | [pc] | 3685.96 (1098) | 2416.63 (336) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -13.583 (0.1) | -13.891 (0.06) | |
| Proper motion (declination) | [mas/yr] | 0.675 (0.09) | 0.199 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.92 (0.04) | |||
| V magnitude | 16.10 (0.01) | |||
| R magnitude | 16.32 (0.1) | |||
| I magnitude | ||||
| J magnitude | 16.06 (0.07) | 16.06 (0.07) | ||
| H magnitude | 15.70 (0.1) | 15.70 (0.1) | ||
| K magnitude | 15.58 | |||
| u magnitude | ||||
| g magnitude | 15.82 (0.09) | |||
| r magnitude | 16.16 (0.07) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.01 (0.0009) | 15.99 (0.003) | ||
| BP magnitude | 15.88 (0.006) | |||
| RP magnitude | 16.09 (0.003) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.022 | |||
* 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.