astro.wikisort.org - Meteorite

HD 102272 b is an extrasolar planet approximately 1,200 light-years away in the constellation of Leo. The planet was discovered orbiting the K-type giant star HD 102272 in 2008. The planet was discovered by the radial velocity method, using the Hobby-Eberly Telescope. Another planet, HD 102272 c, was also discovered orbiting the same star. The discovery was announced in June 2008. HD 102272 b orbits at an average of 0.614 astronomical units away from its star, with a mass at least 5.9 ± 0.2 times that of Jupiter.[1]

HD 102272 b

Discovery
Discovered by	Niedzielski et al.
Discovery site	McDonald Observatory, United States
Discovery date	18 June 2008
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	0.614 ± 0.001 AU (91,850,000 ± 150,000 km)[1]
Eccentricity	0.05 ± 0.04[1]
Orbital period (sidereal)	127.58 ± 0.30[1] d
Time of periastron	2452146 ± 64[1]
Argument of periastron	118 ± 58[1]
Semi-amplitude	155.5 ± 5.6[1]
Star	HD 102272
Physical characteristics
Mass	>5.9 ± 0.2[1] MJ

See also

• HD 102272 c

References

External links

• "Notes for planet HD 102272 b". The Extrasolar Planets Encyclopaedia. Retrieved 2008-07-01.
• "HD 102272 b". Exoplanets. Archived from the original on 2012-03-04. Retrieved 2008-11-09.

На других языках

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- [en] HD 102272 b

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[ru] HD 102272 b

HD 102272 b — газовый гигант, расположенный в системе звезды спектрального класса K0 HD 102272. Открыт методом доплеровской спектроскопии с помощью телескопа Хобби-Эберли в 2008 году.

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