All names: 2MASS J22473367+3119328, Gaia DR3 1889631201873127424, GALEX J224733.6+311932, Gaia EDR3 1889631201873127424, SDSS J224733.66+311932.9, TIC 100771184, Gaia DR2 1889631201873127424, SDSSJ224733.66+311932.9, LAMOST J224733.69+311933.2, SDSS J224733.66+311932.8
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 47 33.66 (0.03) | 22 47 33.66 | 22 47 33.66 (0.03) | ||
| Declination | 31 19 32.83 (0.03) | 31 19 32.90 | 31 19 32.90 (0.03) | ||
| Spectral type | sdB | sdB0.5He7 | |||
| Effective temperature | [K] | 28099.0 (1079) | |||
| log(g) | [cgs] | 5.49 (0.2) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.67 (0.04) | 0.73 (0.07) | 0.67 (0.04) | |
| Distance | [pc] | 1485.22 (92) | 1364.82 (126) | 1485.22 (92) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.242 (0.04) | -4.146 (0.1) | -4.242 (0.04) | |
| Proper motion (declination) | [mas/yr] | -4.341 (0.04) | -4.127 (0.1) | -4.341 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.99 (0.08) | 15.99 (0.08) | |||
| H magnitude | 15.99 (0.2) | 15.99 (0.2) | |||
| K magnitude | 17.11 | ||||
| u magnitude | 15.07 (0.004) | 15.07 (0.004) | |||
| g magnitude | 15.20 (0.004) | 15.20 (0.004) | |||
| r magnitude | 15.66 (0.005) | 15.66 (0.005) | |||
| i magnitude | 15.98 (0.005) | 15.98 (0.005) | |||
| z magnitude | 16.27 (0.008) | 16.27 (0.008) | |||
| G magnitude | 15.43 (0.003) | 15.45 (0.0008) | 15.43 (0.003) | ||
| BP magnitude | 15.31 (0.003) | 15.27 (0.004) | |||
| RP magnitude | 15.67 (0.004) | 15.66 (0.002) | |||
| Pan g magnitude | 15.28 (0.002) | ||||
| Pan r magnitude | 15.66 (0.002) | ||||
| Pan i magnitude | 16.00 (0.002) | ||||
| Pan z magnitude | 16.26 (0.004) | ||||
| Pan y magnitude | 16.44 (0.002) | ||||
| E(B-V) | 0.065 | ||||
* 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.