All names: EC 20237-2528, Gaia DR2 6848203243260741120, Gaia DR3 6848203243260741120, BPS CS 22955-0070, GALEXJ20267-2518, 2MASS J20264578-2518183, UCAC4 324-210925, GALEX J202645.9-251817
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 26 45.92 | 20 26 45.78 (0.03) | ||
| Declination | -25 18 17.48 | -25 18 18.33 (0.02) | ||
| 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] | 0.64 (0.04) | 0.59 (0.03) | |
| Distance | [pc] | 1551.83 (97) | 1692.33 (92) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.931 (0.07) | 2.156 (0.03) | |
| Proper motion (declination) | [mas/yr] | 2.508 (0.05) | 2.288 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.74 | |||
| V magnitude | 14.60 | |||
| R magnitude | 14.80 (0.07) | |||
| I magnitude | ||||
| J magnitude | 14.39 (0.03) | 14.39 (0.03) | ||
| H magnitude | 14.23 (0.04) | 14.23 (0.04) | ||
| K magnitude | 14.18 (0.06) | 14.18 (0.06) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.66 (0.0004) | 14.65 (0.003) | ||
| BP magnitude | 14.60 (0.005) | |||
| RP magnitude | 14.59 (0.001) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | 17.49 (0.009) | |||
| Pan y magnitude | 17.20 (0) | |||
| E(B-V) | 0.065 | |||
* 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.