All names: Gaia DR3 1881776668761026688, UCAC4 588-130964, WISE J222217.90+273519.8, 2MASS J22221789+2735198, LAMOSTJ222217.89+273519.9, GALEX J222217.8+273520, LAMOST J222217.89+273519.7, Gaia DR2 1881776668761026688
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 22 17.90 | 22 22 17.89 (0.04) | ||
| Declination | 27 35 19.75 | 27 35 19.90 (0.04) | ||
| Spectral type | sdO | sdO | ||
| Effective temperature | [K] | 50650.0 (2760) | ||
| log(g) | [cgs] | 5.56 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.61 (0.07) | 0.50 (0.06) | |
| Distance | [pc] | 1627.34 (177) | 2010.86 (223) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 8.339 (0.1) | 9.128 (0.06) | |
| Proper motion (declination) | [mas/yr] | -11.96 (0.1) | -11.966 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.46 (0.04) | |||
| V magnitude | 15.58 (0.01) | |||
| R magnitude | 15.69 (0.09) | |||
| I magnitude | ||||
| J magnitude | 15.42 (0.06) | 15.42 (0.06) | ||
| H magnitude | 15.11 (0.08) | 15.11 (0.08) | ||
| K magnitude | 15.03 (0.2) | 15.03 (0.2) | ||
| u magnitude | 15.12 (0.005) | |||
| g magnitude | 15.37 (0.004) | 15.40 (0.04) | ||
| r magnitude | 15.67 (0.004) | 15.62 (0.09) | ||
| i magnitude | 15.82 (0.004) | 15.72 (0.3) | ||
| z magnitude | 15.94 (0.007) | |||
| G magnitude | 15.50 (0.0008) | 15.48 (0.003) | ||
| BP magnitude | 15.39 (0.007) | |||
| RP magnitude | 15.51 (0.003) | |||
| Pan g magnitude | 15.44 (0.005) | |||
| Pan r magnitude | 15.67 (0.006) | |||
| Pan i magnitude | 15.84 (0.002) | |||
| Pan z magnitude | 15.97 (0.004) | |||
| Pan y magnitude | 16.04 (0.005) | |||
| E(B-V) | 0.061 | |||
* 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.