All names: PG1022+459, 2MASS J10254124+4543335, Gaia DR2 833223213044650240, SDSS J102541.28+454332.3, Gaia DR3 833223213044650240, TIC 406756832, GALEX J102541.2+454331, PG 1022+459
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 10 25 41.31 | 10 25 41.29 (0.03) | ||
| Declination | 45 43 32.46 | 45 43 32.31 (0.03) | ||
| Spectral type | sdB | 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] | 0.25 (0.07) | 0.27 (0.04) | |
| Distance | [pc] | 4074.98 (1201) | 3735.52 (604) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.119 (0.08) | -3.995 (0.03) | |
| Proper motion (declination) | [mas/yr] | -6.053 (0.1) | -5.765 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.76 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.22 (0.1) | 16.22 (0.1) | ||
| H magnitude | 16.55 | |||
| K magnitude | 15.66 (0.2) | 15.66 (0.2) | ||
| u magnitude | 15.68 (0.005) | 15.70 (0.01) | ||
| g magnitude | 15.57 (0.004) | 15.59 (0.01) | ||
| r magnitude | 16.00 (0.004) | 16.00 (0.01) | ||
| i magnitude | 16.28 (0.005) | 16.28 (0.02) | ||
| z magnitude | 16.56 (0.008) | 16.55 (0.02) | ||
| G magnitude | 15.84 (0.002) | 15.83 (0.003) | ||
| BP magnitude | 15.69 (0.007) | |||
| RP magnitude | 16.00 (0.005) | |||
| Pan g magnitude | 15.67 (0.0002) | |||
| Pan r magnitude | 16.03 (0.004) | |||
| Pan i magnitude | 16.34 (0.002) | |||
| Pan z magnitude | 16.57 (0.007) | |||
| Pan y magnitude | 16.67 (0.01) | |||
| E(B-V) | 0.018 | |||
* 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.