All names: PG 1715+457, WISE J171716.23+453623.2, SDSS J171716.17+453623.5, TIC 334898708, 2MASS J17171615+4536236, WISEA J171716.21+453623.2, UCAC4 679-058894, Gaia DR3 1361629637856575872, Gaia DR2 1361629637856575872, PG1715+457
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 17 16.21 | 17 17 16.18 (0.03) | ||
| Declination | 45 36 23.87 | 45 36 23.63 (0.04) | ||
| 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] | 0.30 (0.04) | 0.29 (0.04) | |
| Distance | [pc] | 3328.89 (490) | 3442.34 (422) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -6.239 (0.08) | -6.16 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.519 (0.09) | -2.489 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.96 (0.04) | |||
| V magnitude | 16.20 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.14 (0.09) | 16.14 (0.09) | ||
| H magnitude | 15.68 (0.1) | 15.68 (0.1) | ||
| K magnitude | 15.72 (0.2) | 15.72 (0.2) | ||
| u magnitude | 15.74 (0.005) | |||
| g magnitude | 15.98 (0.004) | |||
| r magnitude | 16.33 (0.005) | |||
| i magnitude | 16.54 (0.006) | |||
| z magnitude | 16.68 (0.01) | |||
| G magnitude | 16.14 (0.002) | 16.12 (0.003) | ||
| BP magnitude | 15.99 (0.007) | |||
| RP magnitude | 16.20 (0.006) | |||
| Pan g magnitude | 16.04 (0.003) | |||
| Pan r magnitude | 16.34 (0.004) | |||
| Pan i magnitude | 16.54 (0.005) | |||
| Pan z magnitude | 16.70 (0.005) | |||
| Pan y magnitude | 16.80 (0.007) | |||
| E(B-V) | 0.029 | |||
* 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.