All names: TIC 47355413, UCAC2 20294485, EC22420-2816, EC 22420-2816, UCAC4 310-265837, Ton S 71, Gaia DR2 6610248001926052096, Gaia DR3 6610248001926052096, 2MASS J22444767-2800561, PHL 397
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 44 47.70 | 22 44 47.68 (0.04) | ||
| Declination | -28 00 56.02 | -28 00 56.08 (0.05) | ||
| Spectral type | sdO | sdO | ||
| 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] | 0.23 (0.07) | 0.38 (0.07) | |
| Distance | [pc] | 4260.76 (1260) | 2649.71 (462) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.818 (0.1) | 6.576 (0.06) | |
| Proper motion (declination) | [mas/yr] | -5.551 (0.1) | -5.633 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.13 (0.04) | |||
| V magnitude | 15.46 (0.01) | |||
| R magnitude | 15.92 (0.1) | |||
| I magnitude | ||||
| J magnitude | 16.26 (0.1) | 16.26 (0.1) | ||
| H magnitude | 16.55 (0.3) | 16.55 (0.3) | ||
| K magnitude | 16.96 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.48 (0.001) | 15.46 (0.003) | ||
| BP magnitude | 15.22 (0.02) | |||
| RP magnitude | 15.79 (0.004) | |||
| Pan g magnitude | 15.31 (0.006) | |||
| Pan r magnitude | 15.76 (0.003) | |||
| Pan i magnitude | 16.13 (0.005) | |||
| Pan z magnitude | 16.42 (0.004) | |||
| Pan y magnitude | 16.59 (0.005) | |||
| E(B-V) | 0.011 | |||
* 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.