All names: TIC 197570382, EC21408-3802, UCAC4 261-196464, 2MASS J21435397-3748201, Gaia DR2 6586050534139990784, Gaia DR3 6586050534139990784, EC 21408-3802
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 43 54.00 | 21 43 53.98 (0.03) | ||
| Declination | -37 48 19.91 | -37 48 20.16 (0.02) | ||
| 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] | 0.16 (0.07) | 0.19 (0.04) | |
| Distance | [pc] | 6422.61 (2929) | 5313.50 (1146) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.144 (0.09) | 1.069 (0.03) | |
| Proper motion (declination) | [mas/yr] | -6.992 (0.08) | -7.195 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.59 (0.01) | |||
| V magnitude | 15.72 (0.01) | |||
| R magnitude | 16.04 (0.2) | |||
| I magnitude | ||||
| J magnitude | 16.02 (0.09) | 16.02 (0.09) | ||
| H magnitude | 16.07 (0.2) | 16.07 (0.2) | ||
| K magnitude | 16.36 | |||
| u magnitude | ||||
| g magnitude | 15.61 (0.01) | |||
| r magnitude | 15.79 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.72 (0.0007) | 15.71 (0.003) | ||
| BP magnitude | 15.62 (0.007) | |||
| RP magnitude | 15.81 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.019 | |||
* 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.