Astronomy:HD 100777 b
From HandWiki
Short description: Exoplanet in the constellation of Leo
| Discovery | |
|---|---|
| Discovered by | Dominique Naef et al.[1] |
| Discovery site | Chile |
| Discovery date | March 5, 2007 |
| Doppler spectroscopy (HARPS) | |
| Orbital characteristics | |
| astron|astron|helion}} | 1.40 AU (209,000,000 km) |
| astron|astron|helion}} | 0.659 AU (98,600,000 km) |
| 1.03 ± 0.03 AU (154,100,000 ± 4,500,000 km) | |
| Eccentricity | 0.36 ± 0.02 |
| Orbital period | 383.7 ± 1.2 d 1.050 y |
| Average Orbital speed | 29.3 |
| astron|astron|helion}} | 2,453,456.2 ± 2.3 |
| 202.7 ± 3.0 | |
| Semi-amplitude | 34.9 ± 0.8 |
| Star | HD 100777 |
| Physical characteristics | |
| Mass | >1.17 ± 0.02 |♃|J}}}}}} |
HD 100777 b, formally named Laligurans,[2] is an extrasolar planet located approximately 172 light-years away in the constellation of Leo, orbiting the star HD 100777. This is a >1.17 MJ planet taking 33.15 Ms to orbit at 154.1 Gm or 4.99 μpc from the star at 36% eccentricity. The velocity of the orbit is 29.3 km/s. Dominique Naef discovered this planet in March 2007 by using HARPS spectrograph located in Chile .[1]
See also
References
- ↑ 1.0 1.1 Naef, D. et al. (2007). "The HARPS search for southern extra-solar planets IX. Exoplanets orbiting HD 100777, HD 190647, and HD 221287". Astronomy and Astrophysics 470 (2): 721–726. doi:10.1051/0004-6361:20077361. Bibcode: 2007A&A...470..721N. http://www.aanda.org/articles/aa/full/2007/29/aa7361-07/aa7361-07.html.
- ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results.
External links
Coordinates: 
11h 35m 51.5234s, −04° 45′ 20.509″
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