All names: 2MASS J04422592-3206009, TIC 170869314, WISE J044225.92-320600.6, Gaia DR2 4877454200954089088, EC 04405-3211, Gaia EDR3 4877454200954089088, UCAC4 290-005384, GALEX J044225.8-320600, Gaia DR3 4877454200954089088, GALEXJ04424-3206
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 04 42 25.94 (0.02) | 04 42 25.87 | 04 42 25.94 (0.02) | ||
| Declination | -32 06 00.96 (0.03) | -32 06 00.84 | -32 06 00.83 (0.03) | ||
| Spectral type | He-sdOB | sdO7.5VIIHe39 | |||
| 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] | 0.59 (0.03) | 0.63 (0.05) | 0.59 (0.03) | |
| Distance | [pc] | 1690.05 (93) | 1592.36 (115) | 1690.05 (93) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.357 (0.03) | -0.384 (0.07) | -0.357 (0.03) | |
| Proper motion (declination) | [mas/yr] | -8.531 (0.04) | -8.309 (0.1) | -8.531 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.52 (0.04) | ||||
| V magnitude | 14.80 (0.02) | ||||
| R magnitude | 15.19 (0.07) | ||||
| I magnitude | |||||
| J magnitude | 15.52 (0.06) | 15.52 (0.06) | |||
| H magnitude | 15.71 (0.1) | 15.71 (0.1) | |||
| K magnitude | 15.58 | ||||
| u magnitude | |||||
| g magnitude | 14.56 (0.02) | ||||
| r magnitude | 15.08 (0.03) | ||||
| i magnitude | 15.34 (0.07) | ||||
| z magnitude | |||||
| G magnitude | 14.78 (0.003) | 14.79 (0.0007) | 14.78 (0.003) | ||
| BP magnitude | 14.61 (0.003) | 14.53 (0.009) | |||
| RP magnitude | 15.10 (0.004) | 15.09 (0.003) | |||
| Pan g magnitude | 14.52 | ||||
| Pan r magnitude | 15.04 | ||||
| Pan i magnitude | 15.42 (0.003) | ||||
| Pan z magnitude | 15.74 | ||||
| Pan y magnitude | 15.98 | ||||
| E(B-V) | 0.010 | ||||
* 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.