All names: PHL 232, HS 2218+0201, PG 2218+020, uvby98 610160232, 2MASS J22212482+0216185, Gaia DR3 2703600484547535744, Gaia DR2 2703600484547535744, PG2218+020, TIC 265787226
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 21 24.82 | 22 21 24.82 (0.03) | ||
| Declination | 02 16 19.12 | 02 16 18.43 (0.03) | ||
| Spectral type | sdB | sdB2.5VIIHe3 | ||
| Effective temperature | [K] | 24700.0 (900) | ||
| log(g) | [cgs] | 5.20 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.15 (0.07) | 1.07 (0.03) | |
| Distance | [pc] | 866.63 (53) | 938.53 (27) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.745 (0.1) | -1.813 (0.03) | |
| Proper motion (declination) | [mas/yr] | -16.344 (0.09) | -16.397 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.60 | |||
| V magnitude | 13.90 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.62 (0.04) | 14.62 (0.04) | ||
| H magnitude | 14.79 (0.06) | 14.79 (0.06) | ||
| K magnitude | 14.82 (0.1) | 14.82 (0.1) | ||
| u magnitude | 14.03 (0.005) | |||
| g magnitude | 14.16 (0.002) | |||
| r magnitude | 14.54 (0.003) | |||
| i magnitude | 18.19 (0.03) | |||
| z magnitude | 14.89 (0.007) | |||
| G magnitude | 14.18 (0.0009) | 14.15 (0.003) | ||
| BP magnitude | 14.04 (0.008) | |||
| RP magnitude | 14.32 (0.002) | |||
| Pan g magnitude | 14.05 (0.003) | |||
| Pan r magnitude | 14.37 (0.004) | |||
| Pan i magnitude | 14.66 (0.003) | |||
| Pan z magnitude | 14.89 (0.003) | |||
| Pan y magnitude | 15.03 (0.004) | |||
| E(B-V) | 0.073 | |||
* 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.