Hd 181720 B
List Of Stars In Sagittarius, Hd 5388 B, Hd 181720
978-613-9-11091-9
6139110912
60
2013-08-14
29.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HD 181720 b is an extrasolar planet which orbits the G-type main sequence star HD 181720, located approximately 190 light years away in the constellation Sagittarius. This planet has at least three-eighths the mass of Jupiter and takes over two and five-eighths years to orbit the star at a semimajor axis of 1.78 AU with an eccentricity of 0.26. This planet was detected by HARPS on October 19, 2009, together with 29 other planets. An extrasolar planet, or exoplanet, is a planet outside the Solar System. As of October 19, 2011, 694 extrasolar planets (in 570 planetary systems and 81 multiple-planet systems) have been identified.
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Astronomi
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