All names: DENIS J222457.1-313718, GALEX J222457.3-313718, Gaia EDR3 6601695863046409600, PHL252, 2MASS J22245721-3137191, Gaia DR3 6601695863046409600, TIC 62483415, Gaia DR2 6601695863046409600, uvby98 610160252, PHL 252, UCAC2 18561181, GSC 07497-00351, EC 22221-3152
| 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.