All names: HS2224+2618, GALEX J222717.3+263328, HS 2224+2618, UCAC2 41296039, Gaia DR3 1880674648872164224, Gaia DR2 1880674648872164224, 2MASS J22271743+2633282, TIC 20796187, UCAC4 583-129439
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 27 17.50 | 22 27 17.42 (0.02) | ||
| Declination | 26 33 28.99 | 26 33 28.27 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 20500.0 (500) | ||
| log(g) | [cgs] | 4.70 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.67 (0.06) | 0.71 (0.03) | |
| Distance | [pc] | 1494.10 (129) | 1413.83 (56) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -18.863 (0.09) | -18.793 (0.03) | |
| Proper motion (declination) | [mas/yr] | -14.756 (0.08) | -14.679 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.65 (0.02) | |||
| V magnitude | 13.74 (0.04) | |||
| R magnitude | 13.84 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.11 (0.03) | 14.11 (0.03) | ||
| H magnitude | 14.19 (0.04) | 14.19 (0.04) | ||
| K magnitude | 14.16 (0.06) | 14.16 (0.06) | ||
| u magnitude | 14.18 (0.007) | |||
| g magnitude | 13.74 (0.002) | 13.58 (0.03) | ||
| r magnitude | 13.97 (0.003) | 13.93 (0.02) | ||
| i magnitude | 14.36 (0.003) | 14.20 (0.07) | ||
| z magnitude | 14.54 (0.008) | |||
| G magnitude | 13.76 (0.0004) | 13.74 (0.003) | ||
| BP magnitude | 13.65 (0.004) | |||
| RP magnitude | 13.88 (0.001) | |||
| Pan g magnitude | 13.61 (0.001) | |||
| Pan r magnitude | 13.93 (0.001) | |||
| Pan i magnitude | 14.22 (0.003) | |||
| Pan z magnitude | 14.42 (0.004) | |||
| Pan y magnitude | 14.56 (0.004) | |||
| E(B-V) | 0.059 | |||
* 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.