All names: EC 20064-4547, GALEX J200958.7-453903, TIC 129137413, Gaia DR2 6672602886886855680, 2MASS J20095887-4539037, Gaia DR3 6672602886886855680, UCAC4 222-177671, BPS CS 22943-0090, EC20064-4547
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 09 58.87 | 20 09 58.87 (0.03) | ||
| Declination | -45 39 02.99 | -45 39 03.66 (0.03) | ||
| Spectral type | sdB+F | sdB+F | ||
| 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] | 0.26 (0.08) | 0.29 (0.04) | |
| Distance | [pc] | 3790.75 (1125) | 3474.64 (476) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -6.252 (0.1) | -6.215 (0.03) | |
| Proper motion (declination) | [mas/yr] | -8.047 (0.08) | -8.158 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.00 (0.02) | |||
| V magnitude | 15.05 (0.01) | |||
| R magnitude | 15.54 (0.09) | |||
| I magnitude | ||||
| J magnitude | 15.31 (0.05) | 15.31 (0.05) | ||
| H magnitude | 15.38 (0.08) | 15.38 (0.08) | ||
| K magnitude | 15.66 (0.2) | 15.66 (0.2) | ||
| u magnitude | ||||
| g magnitude | 14.92 (0.01) | |||
| r magnitude | 15.19 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.06 (0.0007) | 15.04 (0.003) | ||
| BP magnitude | 14.95 (0.008) | |||
| RP magnitude | 15.14 (0.004) | |||
| 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.