All names: EC20238-2824, EC 20238-2824, UCAC4 309-258778, TIC 164679371, 2MASS J20265468-2814267, Gaia DR3 6798058606725255040, Gaia DR2 6798058606725255040, GALEX J202654.7-281426
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 26 54.79 | 20 26 54.69 (0.05) | ||
| Declination | -28 14 26.88 | -28 14 26.76 (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] | 0.32 (0.07) | 0.25 (0.06) | |
| Distance | [pc] | 3169.57 (736) | 4008.02 (1035) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 4.111 (0.1) | 4.17 (0.05) | |
| Proper motion (declination) | [mas/yr] | -6.88 (0.07) | -6.912 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.93 | |||
| V magnitude | 15.80 | |||
| R magnitude | 16.31 (0.3) | |||
| I magnitude | ||||
| J magnitude | 15.17 (0.04) | 15.17 (0.04) | ||
| H magnitude | 14.88 (0.07) | 14.88 (0.07) | ||
| K magnitude | 15.02 (0.1) | 15.02 (0.1) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.74 (0.0007) | 15.73 (0.003) | ||
| BP magnitude | 15.80 (0.004) | |||
| RP magnitude | 15.52 (0.003) | |||
| Pan g magnitude | 15.85 (0.004) | |||
| Pan r magnitude | 15.83 (0.002) | |||
| Pan i magnitude | 15.85 (0.001) | |||
| Pan z magnitude | 15.92 (0.002) | |||
| Pan y magnitude | 15.94 (0.005) | |||
| E(B-V) | 0.059 | |||
* 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.