All names: TYC 999-2458-1, TIC 447876895, GALEX J172445.5+113224, 2MASS J17244541+1132250, Gaia DR3 4492298675061523712, Gaia DR2 4492298675061523712, GALEXJ17247+1132, Gaia EDR3 4492298675061523712
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 17 24 45.44 (0.03) | 17 24 45.50 | 17 24 45.42 (0.03) | ||
| Declination | 11 32 25.32 (0.02) | 11 32 24.91 | 11 32 25.12 (0.02) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 3.18 (0.05) | 3.09 (0.06) | 3.18 (0.05) | |
| Distance | [pc] | 314.45 (5) | 323.59 (6) | 314.45 (5) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 17.517 (0.04) | 17.308 (0.08) | 17.517 (0.04) | |
| Proper motion (declination) | [mas/yr] | 12.822 (0.04) | 12.49 (0.09) | 12.822 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 12.29 (0.2) | ||||
| V magnitude | 12.42 (0.2) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 13.07 (0.03) | 13.07 (0.03) | |||
| H magnitude | 13.18 (0.03) | 13.18 (0.03) | |||
| K magnitude | 13.31 (0.04) | 13.31 (0.04) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 12.57 (0.003) | 12.59 (0.0003) | 12.57 (0.003) | ||
| BP magnitude | 12.47 (0.003) | 12.43 (0.005) | |||
| RP magnitude | 12.76 (0.004) | 12.76 (0.0009) | |||
| Pan g magnitude | 12.27 | ||||
| Pan r magnitude | 12.73 | ||||
| Pan i magnitude | 13.06 | ||||
| Pan z magnitude | 13.35 (0.004) | ||||
| Pan y magnitude | 13.48 (0.001) | ||||
| E(B-V) | 0.096 | ||||
* 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.