All names: GALEX J170237.6+243521, Gaia DR3 4572469019942466304, PG 1700+247, 2MASS J17023768+2435226, SDSS J170237.68+243522.6, Gaia EDR3 4572469019942466304, TIC 357520369, Gaia DR2 4572469019942466304, PG1700+247, LAMOST J170237.68+243522.5
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 17 02 37.68 (0.02) | 17 02 37.69 | 17 02 37.68 (0.02) | ||
| Declination | 24 35 22.46 (0.03) | 24 35 23.28 | 24 35 22.63 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 26420.0 (620) | |||
| log(g) | [cgs] | 5.29 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.57 (0.04) | 0.46 (0.06) | 0.57 (0.04) | |
| Distance | [pc] | 1751.31 (116) | 2166.85 (274) | 1751.31 (116) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -6.235 (0.03) | -6.263 (0.07) | -6.235 (0.03) | |
| Proper motion (declination) | [mas/yr] | -10.459 (0.04) | -10.177 (0.09) | -10.459 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.05 | ||||
| V magnitude | 15.97 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.56 (0.1) | 16.56 (0.1) | |||
| H magnitude | 15.75 | ||||
| K magnitude | 16.14 | ||||
| u magnitude | 15.60 (0.005) | 15.60 (0.005) | |||
| g magnitude | 15.71 (0.004) | 15.71 (0.004) | |||
| r magnitude | 16.13 (0.004) | 16.13 (0.004) | |||
| i magnitude | 16.43 (0.005) | 16.43 (0.005) | |||
| z magnitude | 16.74 (0.009) | 16.74 (0.009) | |||
| G magnitude | 15.91 (0.003) | 15.93 (0.001) | 15.91 (0.003) | ||
| BP magnitude | 15.80 (0.004) | 15.74 (0.008) | |||
| RP magnitude | 16.14 (0.005) | 16.13 (0.004) | |||
| Pan g magnitude | 15.76 (0.002) | ||||
| Pan r magnitude | 16.14 (0.002) | ||||
| Pan i magnitude | 16.46 (0.003) | ||||
| Pan z magnitude | 16.72 (0.005) | ||||
| Pan y magnitude | 16.89 (0.01) | ||||
| E(B-V) | 0.033 | ||||
* 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.