Astronomy:HD 99109 b

From HandWiki
HD 99109 b / Perwana
Discovery
Discovered byButler et al.[1]
Discovery site United States
Discovery date15 July 2006
Radial velocity
Orbital characteristics
1.105 ± 0.065 AU (165,300,000 ± 9,700,000 km)
Eccentricity0.09 ± 0.16
Orbital period439.3 ± 5.6 d
astron|astron|helion}}2,411,310 ± 80
256
Semi-amplitude14.1 ± 2.2
StarHD 99109


HD 99109 b, formally named Perwana, is an extrasolar planet approximately 197 light-years away in the constellation of Leo. The planet was confirmed in 2006 to be orbiting the orange dwarf star HD 99109. The planet is about one half the mass of Jupiter, classifying the planet as a Jovian planet. The orbital eccentricity is about the same as Mars.[1]

The planet HD 99109 b is named Perwana. The name was selected in the NameExoWorlds campaign by Pakistan , during the 100th anniversary of the IAU. Perwana means moth in Urdu, alluding to the eternal love of an object circling a source of light (name of HD 99109 is Shama or lamp).[2][3]

A survey of the stability of hypothetical trojan planets of gas giants showed that Perwana might be capable of hosting habitable Earth-sized planets as trojans.[4]

References

  1. ↑ 1.0 1.1 Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. doi:10.1086/504701. Bibcode: 2006ApJ...646..505B. 
  2. ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results. 
  3. ↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/. 
  4. ↑ Schwarz, R.; Dvorak, R.; Süli, Á; Érdi, B. (2007-11-01). "Survey of the stability region of hypothetical habitable Trojan planets" (in en). Astronomy & Astrophysics 474 (3): 1023–1029. doi:10.1051/0004-6361:20077994. ISSN 0004-6361. https://www.aanda.org/articles/aa/abs/2007/42/aa7994-07/aa7994-07.html. 

External links

Coordinates: Sky map 11h 24m 17.358s, −01° 31′ 44.674″




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