astro.wikisort.org - Meteorite

HD 99109 b 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]

HD 99109 b

Discovery
Discovered by	Butler et al.[1]
Discovery site	United States
Discovery date	15 July 2006
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	1.105 ± 0.065 AU (165,300,000 ± 9,700,000 km)
Eccentricity	0.09 ± 0.16
Orbital period (sidereal)	439.3 ± 5.6 d
Time of periastron	2,411,310 ± 80
Argument of periastron	256
Semi-amplitude	14.1 ± 2.2
Star	HD 99109

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]

References

External links

• "HD 99109". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-07-18.
• "HD 99109 b". PlanetQuest. Archived from the original on 2008-09-17. Retrieved 2008-07-18.

На других языках

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[de] HD 99109 b

HD 99109 b ist ein Exoplanet, der den Hauptreihenstern HD 99109 alle 439,3 Tage umkreist. Auf Grund seiner hohen Masse wird angenommen, dass es sich um einen Gasplaneten handelt.[1]

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- [en] HD 99109 b

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