All names: TIC 159747622, EC 21137-4059, 2MASS J21165408-4046303, Gaia DR3 6580856578648963840, UCAC4 247-181702, EC21137-4059, Gaia DR2 6580856578648963840, GALEX J211654.0-404629
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 16 54.06 | 21 16 54.08 (0.02) | ||
| Declination | -40 46 30.43 | -40 46 30.26 (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] | 0.17 (0.06) | 0.20 (0.03) | |
| Distance | [pc] | 5813.95 (2042) | 4967.71 (822) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.933 (0.08) | -1.943 (0.03) | |
| Proper motion (declination) | [mas/yr] | -11.356 (0.07) | -11.375 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.58 (0.02) | |||
| V magnitude | 14.60 (0.05) | |||
| R magnitude | 14.96 (0.2) | |||
| I magnitude | ||||
| J magnitude | 14.84 (0.04) | 14.84 (0.04) | ||
| H magnitude | 15.10 (0.08) | 15.10 (0.08) | ||
| K magnitude | 15.04 (0.1) | 15.04 (0.1) | ||
| u magnitude | ||||
| g magnitude | 14.50 (0.03) | |||
| r magnitude | ||||
| i magnitude | 15.07 (0.09) | |||
| z magnitude | ||||
| G magnitude | 14.65 (0.0005) | 14.63 (0.003) | ||
| BP magnitude | 14.56 (0.006) | |||
| RP magnitude | 14.72 (0.002) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.020 | |||
* 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.