All names: EC 21545-7447, 2MASS J21591299-7433233, Gaia DR3 6358426991256350592, EC21545-7447, TIC 290370601, Gaia DR2 6358426991256350592, GALEX J215912.7-743323, UCAC4 078-050741
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 59 13.09 | 21 59 12.97 (0.03) | ||
| Declination | -74 33 22.61 | -74 33 23.34 (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] | 0.55 (0.04) | 0.55 (0.03) | |
| Distance | [pc] | 1819.51 (125) | 1813.89 (107) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.721 (0.06) | 2.019 (0.03) | |
| Proper motion (declination) | [mas/yr] | -14.219 (0.06) | -14.004 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.97 (0.01) | |||
| V magnitude | 15.92 (0.07) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.15 (0.05) | 15.15 (0.05) | ||
| H magnitude | 14.85 (0.07) | 14.85 (0.07) | ||
| K magnitude | 14.64 (0.1) | 14.64 (0.1) | ||
| u magnitude | ||||
| g magnitude | 15.90 (0.07) | |||
| r magnitude | 15.92 (0.03) | |||
| i magnitude | 15.90 (0.2) | |||
| z magnitude | ||||
| G magnitude | 15.87 (0.0009) | 15.84 (0.003) | ||
| BP magnitude | 15.89 (0.006) | |||
| RP magnitude | 15.69 (0.003) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.032 | |||
* 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.