All names: UCAC4 186-216140, EC 22536-5304, 2MASS J22563592-5248359, GALEXJ22565-5248, Gaia DR3 6512436478313050496, Gaia DR2 6512436478313050496, GALEX J225635.7-524837, WISE J225635.91-524836.4
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 56 35.76 | 22 56 35.92 (0.02) | ||
| Declination | -52 48 37.71 | -52 48 36.06 (0.02) | ||
| Spectral type | He-sdOB | sdB0.2VIIHe23 | ||
| 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] | 1.20 (0.05) | 1.37 (0.03) | |
| Distance | [pc] | 832.29 (34) | 730.89 (15) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.474 (0.06) | 2.453 (0.02) | |
| Proper motion (declination) | [mas/yr] | -44.215 (0.07) | -44.341 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.29 (0.01) | |||
| V magnitude | 13.32 (0.02) | |||
| R magnitude | 13.56 (0.1) | |||
| I magnitude | ||||
| J magnitude | 13.08 (0.02) | 13.08 (0.02) | ||
| H magnitude | 12.90 (0.02) | 12.90 (0.02) | ||
| K magnitude | 12.87 (0.03) | 12.87 (0.03) | ||
| u magnitude | ||||
| g magnitude | 13.20 (0.02) | |||
| r magnitude | 13.44 (0.02) | |||
| i magnitude | 13.56 (0.01) | |||
| z magnitude | ||||
| G magnitude | 13.26 (0.0003) | 13.24 (0.003) | ||
| BP magnitude | 13.17 (0.005) | |||
| RP magnitude | 13.23 (0.001) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.012 | |||
* 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.