All names: TIC 164754858, PHL 3682, GALEX J014422.0-215938, Ton S 228, UCAC4 341-001935, Gaia DR2 5135570087491448448, UCAC2 23042709, Gaia DR3 5135570087491448448, 2MASS J01442211-2159371, MCT 0142-2214, MCT0142-2214, GD 1491
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 01 44 22.09 | 01 44 22.12 (0.02) | ||
| Declination | -21 59 37.46 | -21 59 37.19 (0.02) | ||
| Spectral type | sdB+F/G | sdBHe1+F/G | ||
| 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] | 0.41 (0.04) | 0.51 (0.03) | |
| Distance | [pc] | 2431.91 (257) | 1953.12 (106) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 21.34 (0.09) | 21.602 (0.03) | |
| Proper motion (declination) | [mas/yr] | -4.786 (0.05) | -4.807 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.86 (0.01) | |||
| V magnitude | 14.78 (0.01) | |||
| R magnitude | 15.05 | |||
| I magnitude | ||||
| J magnitude | 14.27 (0.03) | 14.27 (0.03) | ||
| H magnitude | 13.99 (0.04) | 13.99 (0.04) | ||
| K magnitude | 14.05 (0.05) | 14.05 (0.05) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.70 (0.0003) | 14.68 (0.003) | ||
| BP magnitude | 14.72 (0.003) | |||
| RP magnitude | 14.54 (0.001) | |||
| Pan g magnitude | 14.76 (0.007) | |||
| Pan r magnitude | 14.82 (0.005) | |||
| Pan i magnitude | 14.87 (0.001) | |||
| Pan z magnitude | 14.95 (0.003) | |||
| Pan y magnitude | 14.99 (0.004) | |||
| E(B-V) | 0.013 | |||
* 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.