All names: TIC 419839790, UCAC4 499-143302, SDSS J222858.49+093722.3, USNO-A2.0 0975-20958220, Gaia DR2 2723179797341216512, WISE J222858.48+093722.5, WISEA J222858.49+093722.3, PG 2226+094, 2MASS J22285846+0937225, UCAC2 35316403, Gaia DR3 2723179797341216512, GALEX J222858.5+093721, PG2226+094
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 28 58.41 | 22 28 58.48 (0.02) | ||
| Declination | 09 37 21.79 | 09 37 22.47 (0.02) | ||
| Spectral type | sdB+K | sdB | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.10 (0.04) | 1.26 (0.03) | |
| Distance | [pc] | 907.52 (30) | 793.97 (16) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 16.486 (0.06) | 16.214 (0.03) | |
| Proper motion (declination) | [mas/yr] | -4.401 (0.05) | -4.45 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.18 (0.06) | |||
| V magnitude | 14.16 (0.01) | |||
| R magnitude | 14.08 (0.08) | |||
| I magnitude | ||||
| J magnitude | 13.35 (0.03) | 13.35 (0.03) | ||
| H magnitude | 12.93 (0.02) | 12.93 (0.02) | ||
| K magnitude | 12.88 (0.03) | 12.88 (0.03) | ||
| u magnitude | 14.59 (0.005) | |||
| g magnitude | 14.98 (0.005) | |||
| r magnitude | 14.23 (0.003) | |||
| i magnitude | 14.53 (0.005) | |||
| z magnitude | 14.23 (0.005) | |||
| G magnitude | 13.97 (0.001) | 13.95 (0.003) | ||
| BP magnitude | 14.00 (0.01) | |||
| RP magnitude | 13.77 (0.006) | |||
| Pan g magnitude | 14.04 (0.005) | |||
| Pan r magnitude | 14.10 (0.004) | |||
| Pan i magnitude | 14.11 (0.006) | |||
| Pan z magnitude | 14.15 (0.004) | |||
| Pan y magnitude | 14.16 (0.006) | |||
| E(B-V) | 0.063 | |||
* 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.