All names: HS2206+2847, SDSS J220821.35+290239.5, Gaia DR2 1893638956115949952, TIC 27684103, UCAC4 596-135805, 2MASS J22082135+2902394, Gaia DR3 1893638956115949952, HS 2206+2847
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 08 21.52 | 22 08 21.36 (0.03) | ||
| Declination | 29 02 39.80 | 29 02 39.62 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 32200.0 (800) | ||
| log(g) | [cgs] | 5.75 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.84 (0.06) | 0.76 (0.04) | |
| Distance | [pc] | 1183.99 (78) | 1323.63 (63) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.509 (0.1) | 0.374 (0.04) | |
| Proper motion (declination) | [mas/yr] | -10.502 (0.1) | -10.296 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | 14.38 (0.8) | |||
| I magnitude | ||||
| J magnitude | 15.82 (0.09) | 15.82 (0.09) | ||
| H magnitude | 15.66 (0.2) | 15.66 (0.2) | ||
| K magnitude | 14.46 | |||
| u magnitude | 14.85 (0.004) | 14.85 (0.004) | ||
| g magnitude | 15.03 (0.003) | 15.03 (0.003) | ||
| r magnitude | 15.48 (0.004) | 15.48 (0.004) | ||
| i magnitude | 15.79 (0.004) | 15.79 (0.004) | ||
| z magnitude | 16.05 (0.007) | 16.05 (0.007) | ||
| G magnitude | 15.28 (0.0008) | 15.26 (0.003) | ||
| BP magnitude | 15.11 (0.02) | |||
| RP magnitude | 15.48 (0.003) | |||
| Pan g magnitude | 15.12 (0.005) | |||
| Pan r magnitude | 15.48 (0.003) | |||
| Pan i magnitude | 15.81 (0.003) | |||
| Pan z magnitude | 16.06 (0.004) | |||
| Pan y magnitude | 16.22 (0.006) | |||
| E(B-V) | 0.068 | |||
* 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.