All names: GALEX J002122.4-165748, Gaia DR3 2367957861336489984, Gaia DR2 2367957861336489984, MCT0018-1714, MCT 0018-1714, 2MASS J00212247-1657491
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 00 21 22.45 | 00 21 22.48 (0.04) | ||
| Declination | -16 57 48.30 | -16 57 48.93 (0.04) | ||
| 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] | 0.34 (0.07) | 0.30 (0.05) | |
| Distance | [pc] | 2944.64 (634) | 3280.84 (577) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 8.446 (0.1) | 8.513 (0.05) | |
| Proper motion (declination) | [mas/yr] | -4.659 (0.08) | -4.655 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.92 (0.07) | 15.92 (0.07) | ||
| H magnitude | 15.84 (0.1) | 15.84 (0.1) | ||
| K magnitude | 15.24 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.40 (0.001) | 16.38 (0.003) | ||
| BP magnitude | 16.42 (0.005) | |||
| RP magnitude | 16.23 (0.004) | |||
| Pan g magnitude | 16.44 (0.003) | |||
| Pan r magnitude | 16.50 (0.004) | |||
| Pan i magnitude | 16.57 (0.002) | |||
| Pan z magnitude | 16.65 (0.005) | |||
| Pan y magnitude | 16.68 (0.01) | |||
| 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.