All names: EC 21207-3815, EC21207-3815, UCAC4 260-197218, Gaia DR2 6583741967740716288, TIC 207079776, 2MASS J21235326-3802301, GALEX J212353.2-380229, Gaia DR3 6583741967740716288
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 23 53.21 | 21 23 53.26 (0.04) | ||
| Declination | -38 02 29.58 | -38 02 30.10 (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 (0.07) | 0.32 (0.05) | |
| Distance | [pc] | 3889.54 (1067) | 3135.78 (494) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.986 (0.09) | -0.977 (0.04) | |
| Proper motion (declination) | [mas/yr] | -7.436 (0.08) | -7.369 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.64 (0.1) | |||
| V magnitude | 16.06 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.50 (0.06) | 15.50 (0.06) | ||
| H magnitude | 15.26 (0.1) | 15.26 (0.1) | ||
| K magnitude | 15.15 (0.2) | 15.15 (0.2) | ||
| u magnitude | ||||
| g magnitude | 16.43 (0.01) | |||
| r magnitude | 16.18 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.22 (0.0008) | 16.21 (0.003) | ||
| BP magnitude | 16.35 (0.006) | |||
| RP magnitude | 15.91 (0.003) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.026 | |||
* 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.