All names: WISE J224927.09+021431.6, WISEA J224927.10+021431.8, SDSS J224927.08+021432.4, 2MASS J22492706+0214323, UCAC2 32637764, GALEX J224927.0+021433, Gaia EDR3 2656170267344606464, HS 2246+0158, PG2246+019, UCAC4 462-126288, Gaia DR2 2656170267344606464, TIC 422081421, Gaia DR3 2656170267344606464, PG 2246+019
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 49 27.09 (0.05) | 22 49 27.04 | 22 49 27.08 (0.05) | ||
| Declination | 02 14 32.38 (0.04) | 02 14 32.92 | 02 14 32.45 (0.04) | ||
| Spectral type | sdB | sdBO | |||
| Effective temperature | [K] | 33600.0 (1000) | |||
| log(g) | [cgs] | 5.85 (0.2) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.75 (0.06) | 0.67 (0.08) | 0.75 (0.06) | |
| Distance | [pc] | 1335.65 (108) | 1498.58 (185) | 1335.65 (108) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 10.594 (0.06) | 10.574 (0.1) | 10.594 (0.06) | |
| Proper motion (declination) | [mas/yr] | -4.353 (0.05) | -4.282 (0.1) | -4.353 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.49 (0.03) | ||||
| V magnitude | 15.70 (0.01) | ||||
| R magnitude | 16.07 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 16.22 (0.09) | 16.22 (0.09) | |||
| H magnitude | 16.92 | ||||
| K magnitude | 15.19 | ||||
| u magnitude | 15.25 (0.005) | ||||
| g magnitude | 15.46 (0.003) | ||||
| r magnitude | 15.88 (0.004) | ||||
| i magnitude | 16.23 (0.005) | ||||
| z magnitude | 16.50 (0.009) | ||||
| G magnitude | 15.69 (0.003) | 15.71 (0.0009) | 15.69 (0.003) | ||
| BP magnitude | 15.57 (0.004) | 15.55 (0.01) | |||
| RP magnitude | 15.92 (0.005) | 15.92 (0.007) | |||
| Pan g magnitude | 15.54 (0.003) | ||||
| Pan r magnitude | 15.91 (0.004) | ||||
| Pan i magnitude | 16.26 (0.003) | ||||
| Pan z magnitude | 16.51 (0.003) | ||||
| Pan y magnitude | 16.70 (0.01) | ||||
| E(B-V) | 0.057 | ||||
* 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.