| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 190647 | |
| Constellation | Sagittarius | |
| Right ascension | (α) | 20h 07m 19.6697s |
| Declination | (δ) | -35° 32′ 19.079″ |
| Distance | 176.8 ly (54.2 pc) |
|
| Spectral type | G5IV | |
| Orbital elements | ||
| Semimajor axis | (a) | 2.07 ± 0.06 AU |
| Periastron | (q) | 1.70 AU |
| Apastron | (Q) | 2.44 AU |
| Eccentricity | (e) | 0.18 ± 0.02 |
| Orbital period | (P) | 1038.1 ± 5.1 d (2.8421 y) |
| Orbital speed | (υ) | 21.8 km/s |
| Argument of periastron |
(ω) | 232.5 ± 9.6° |
| Time of periastron | (T0) | 2,453,868 ± 25 JD |
| Semi-amplitude | (K) | 36.4 ± 1.2 m/s |
| Physical characteristics | ||
| Mass | (m) | >1.9 MJ |
| Discovery information | ||
| Discovery date | March 5, 2007 | |
| Discoverer(s) | Naef et al. | |
| Detection method | HARPS | |
| Discovery site | Chile | |
| Discovery status | Published | |
| Other designations | ||
|
HIP 99115 b
|
||
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
HD 190647 b is >1.9 MJ planet orbiting the star HD 190647 at 309.7 gigameters or 10.04 μpc away from the star, taking 89.69 megaseconds to orbit the star with average velocity of 21.8 km/s. The orbital eccentricity is 18%. Dominique Naef discovered this planet in early 2007 by using HARPS spectrograph located in Chile.