Astronomy:HD 216770 b
From HandWiki
Short description: Extrasolar planet in the constellation Piscis Austrinus
| Discovery | |
|---|---|
| Discovered by | Mayor et al. |
| Discovery site |  California, USA |
| Discovery date | June 30, 2003 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| astron|astron|helion}} | 0.63 AU (94,000,000 km) |
| astron|astron|helion}} | 0.29 AU (43,000,000 km) |
| 0.46 AU (69,000,000 km) | |
| Eccentricity | 0.37 ± 0.06 |
| Orbital period | 118.45 ± 0.55 d 0.32429 y |
| Average Orbital speed | 42 |
| astron|astron|helion}} | 2,452,672 ± 3.5 |
| 281 ± 10 | |
| Semi-amplitude | 30.9 ± 1.9 |
| Star | HD 216770 |
| Physical characteristics | |
| Mass | >0.65 |♃|J}}}}}} |
HD 216770 b is an extrasolar planet orbiting the star HD 216770. It has a mass about two thirds that of Jupiter, largest planet in the Solar System. But unlike the gas giants in the Solar System, it orbits in a very eccentric orbit around the star. The mean distance from the star is slightly larger than Mercury's, and it completes one orbit around the star in every 118 days.[1]
See also
References
- ↑ Mayor, M. et al. (2004). "The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE". Astronomy and Astrophysics 415 (1): 391–402. doi:10.1051/0004-6361:20034250. Bibcode: 2004A&A...415..391M. http://www.aanda.org/articles/aa/full/2004/07/aa0250/aa0250.html.
External links
- "Notes for planet HD 216770 b". Extrasolar Planets Encyclopaedia. https://exoplanet.eu/catalog/hd_216770_b--66/.
- "HD 216770". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+216770.
Coordinates: 
22h 55m 53.7097s, −26° 39′ 31.547″
 |  |
