All names: Gaia DR3 1908933472097863808, Gaia DR2 1908933472097863808, SDSSJ222411.66+393931.3, SDSS J222411.65+393931.2, 2MASS J22241166+3939313, TIC 314933458, FBS 2222+394, SDSS J222411.66+393931.2, FBS B 178
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 24 11.66 | 22 24 11.67 (0.02) | ||
| Declination | 39 39 31.30 | 39 39 31.32 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 27895.0 (1067) | ||
| log(g) | [cgs] | 5.47 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.18 (0.04) | 1.20 (0.03) | |
| Distance | [pc] | 847.60 (30) | 830.98 (21) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -13.267 (0.05) | -13.365 (0.02) | |
| Proper motion (declination) | [mas/yr] | -5.303 (0.06) | -5.478 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.72 (0.04) | 14.72 (0.04) | ||
| H magnitude | 14.79 (0.07) | 14.79 (0.07) | ||
| K magnitude | 14.69 (0.1) | 14.69 (0.1) | ||
| u magnitude | 14.18 (0.004) | 14.18 (0.004) | ||
| g magnitude | 14.22 (0.003) | 14.22 (0.003) | ||
| r magnitude | 14.58 (0.004) | 14.58 (0.004) | ||
| i magnitude | 14.86 (0.004) | 14.89 (0.004) | ||
| z magnitude | 15.10 (0.005) | 15.10 (0.005) | ||
| G magnitude | 14.42 (0.0004) | 14.40 (0.003) | ||
| BP magnitude | 14.29 (0.003) | |||
| RP magnitude | 14.54 (0.002) | |||
| Pan g magnitude | 14.30 (0.003) | |||
| Pan r magnitude | 14.60 (0.001) | |||
| Pan i magnitude | 14.88 (0.001) | |||
| Pan z magnitude | 15.10 (0.002) | |||
| Pan y magnitude | 15.22 (0.002) | |||
| E(B-V) | 0.098 | |||
* 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.