All names: GALEX J200517.0-542811, Gaia DR3 6473122203110718080, TIC 422004014, Gaia DR2 6473122203110718080, EC 20013-5436, UCAC4 178-225725, 2MASS J20051700-5428121, EC20013-5436
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 05 16.96 | 20 05 17.00 (0.04) | ||
| Declination | -54 28 12.22 | -54 28 12.03 (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] | 0.23 (0.08) | 0.23 (0.05) | |
| Distance | [pc] | 4415.01 (1487) | 4399.47 (943) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.619 (0.1) | 6.588 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.429 (0.08) | -3.497 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.44 | |||
| V magnitude | 15.55 | |||
| R magnitude | 15.66 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.87 (0.1) | 15.87 (0.1) | ||
| H magnitude | 15.92 (0.2) | 15.92 (0.2) | ||
| K magnitude | 15.15 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.56 (0.0006) | 15.54 (0.003) | ||
| BP magnitude | 15.45 (0.004) | |||
| RP magnitude | 15.65 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.031 | |||
* 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.