All names: 2MASS J21085800-6042213, GALEX J210857.9-604220, UCAC4 147-229364, Gaia DR2 6452665651837233280, Gaia DR3 6452665651837233280, EC 21050-6054, EC21050-6054
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 08 58.04 | 21 08 58.03 (0.03) | ||
| Declination | -60 42 20.77 | -60 42 21.64 (0.03) | ||
| Spectral type | sdOB | sdOB | ||
| 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] | 0.02 (0.06) | 0.08 (0.04) | |
| Distance | [pc] | 42194.09 (104506) | 12722.65 (6912) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.826 (0.09) | 6.623 (0.03) | |
| Proper motion (declination) | [mas/yr] | -10.998 (0.08) | -10.883 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.30 (0.02) | |||
| V magnitude | 15.53 (0.02) | |||
| R magnitude | 15.61 (0.1) | |||
| I magnitude | ||||
| J magnitude | 16.13 (0.07) | 16.13 (0.07) | ||
| H magnitude | 16.20 (0.2) | 16.20 (0.2) | ||
| K magnitude | 16.05 | |||
| u magnitude | ||||
| g magnitude | 15.31 (0.02) | |||
| r magnitude | 15.71 (0.01) | |||
| i magnitude | 16.06 (0.01) | |||
| z magnitude | ||||
| G magnitude | 15.53 (0.0008) | 15.50 (0.003) | ||
| BP magnitude | 15.30 (0.008) | |||
| RP magnitude | 15.77 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.021 | |||
* 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.