All names: PSO J335.5707+26.9379, 2MASS J22221698+2656166, Gaia DR2 1881671180067646080, LAMOST J222216.99+265616.5, Gaia DR3 1881671180067646080, LAMOSTJ222216.98+265616.6, GALEX J222216.9+265616, WISE J222216.99+265616.3
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 22 17.00 | 22 22 16.98 (0.04) | ||
| Declination | 26 56 16.58 | 26 56 16.61 (0.05) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 28760.0 (270) | ||
| log(g) | [cgs] | 5.38 (0.08) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.30 (0.09) | 0.38 (0.06) | |
| Distance | [pc] | 3384.09 (1064) | 2660.99 (432) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.668 (0.2) | -3.361 (0.06) | |
| Proper motion (declination) | [mas/yr] | -4.298 (0.1) | -4.343 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.64 (0.2) | 16.64 (0.2) | ||
| H magnitude | 15.84 (0.2) | 15.84 (0.2) | ||
| K magnitude | 15.72 (0.3) | 15.72 (0.3) | ||
| u magnitude | 16.47 (0.007) | |||
| g magnitude | 16.63 (0.005) | 16.69 (0.004) | ||
| r magnitude | 16.93 (0.006) | 16.95 (0.004) | ||
| i magnitude | 17.10 (0.007) | 17.12 (0.002) | ||
| z magnitude | 17.19 (0.01) | 17.24 (0.005) | ||
| G magnitude | 16.77 (0.001) | 16.75 (0.003) | ||
| BP magnitude | 16.69 (0.007) | |||
| RP magnitude | 16.78 (0.005) | |||
| Pan g magnitude | 16.69 (0.004) | |||
| Pan r magnitude | 16.95 (0.004) | |||
| Pan i magnitude | 17.12 (0.002) | |||
| Pan z magnitude | 17.24 (0.005) | |||
| Pan y magnitude | 17.27 (0.01) | |||
| E(B-V) | 0.060 | |||
* 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.