All names: PHL 252, Gaia EDR3 6601695863046409600, GSC 07497-00351, DENIS J222457.1-313718, EC 22221-3152, 2MASS J22245721-3137191, PHL252, TIC 62483415, GALEX J222457.3-313718, uvby98 610160252, Gaia DR2 6601695863046409600, Gaia DR3 6601695863046409600, UCAC2 18561181
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 24 57.27 (0.03) | 22 24 57.15 | 22 24 57.23 (0.03) | ||
| Declination | -31 37 18.91 (0.03) | -31 37 18.95 | -31 37 18.87 (0.03) | ||
| Spectral type | sdBV | sdO | |||
| Effective temperature | [K] | 35100.0 | |||
| log(g) | [cgs] | 5.85 | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.55 (0.04) | 1.46 (0.06) | 1.55 (0.04) | |
| Distance | [pc] | 643.42 (16) | 685.78 (28) | 643.42 (16) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 33.144 (0.04) | 33.271 (0.08) | 33.144 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.351 (0.03) | -2.384 (0.08) | -2.351 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.49 (0.3) | ||||
| V magnitude | 13.90 | ||||
| R magnitude | 14.29 (0.1) | ||||
| I magnitude | 14.00 (0.07) | ||||
| J magnitude | 14.38 (0.03) | 14.38 (0.03) | |||
| H magnitude | 14.50 (0.06) | 14.50 (0.06) | |||
| K magnitude | 14.65 (0.09) | 14.65 (0.09) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 13.66 (0.003) | 13.68 (0.0009) | 13.66 (0.003) | ||
| BP magnitude | 13.50 (0.004) | 13.43 (0.009) | |||
| RP magnitude | 13.98 (0.005) | 13.98 (0.002) | |||
| Pan g magnitude | 13.39 | ||||
| Pan r magnitude | 13.92 | ||||
| Pan i magnitude | 14.33 (0.002) | ||||
| Pan z magnitude | 14.61 | ||||
| Pan y magnitude | 14.85 | ||||
| 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.