Global InformationHD 128311 b information
| Discovery | |
|---|---|
| Discovered by | Butler et al. |
| Discovery site |  California, United States |
| Discovery date | 2002 |
Detection method | Doppler Spectroscopy |
| Orbital characteristics[1] | |
| Apastron | 1.412 AU (211,200,000 km) |
| Periastron | 0.756 AU (113,100,000 km) |
Semi-major axis | 1.084 ± 0.006 AU (162,160,000 ± 900,000 km) |
| Eccentricity | 0.303±0.011 |
Orbital period (sidereal) | 453.019 ± 0.404 d (1.24030 ± 0.00111 a) |
Average orbital speed | 26.2 |
| Inclination | >30 |
Time of periastron | 2450198.691±4.472 |
Argument of periastron | 57.864±3.258 |
| Semi-amplitude | 55.627±0.456 |
| Star | HD 128311 |
| Physical characteristics[1] | |
| Mass | ≥1.769±0.023 MJ |
HD 128311 b is an exoplanet[2] located approximately 54 light-years away in the constellation of Boötes. This planet orbits in an eccentric orbit about 1.084 AU from its star (HD 128311). The planet has a minimum mass of 1.769 Jupiter masses.[3][1]
- ^ a b c Cite error: The named reference
McArthur2014was invoked but never defined (see the help page). - ^ Cite error: The named reference
Butler2003was invoked but never defined (see the help page). - ^ Cite error: The named reference
Vogt2005was invoked but never defined (see the help page).