HD 221287

HD 221287 is the name of the sun about 55 parsecs ( 180 light years) distant star that is orbited by an exoplanet. The in- constellation Toucan star is a main sequence star of spectral type F7 and has the apparent magnitude 7.82. With a surface temperature of about 6300 K, the rating of the sun is relatively similar.

The Planet

Main article: HD 221287 b

Due to the large number of newly found, extrasolar planets are awarded newfound companions no longer proper names. Wherefore the name of the planet, which orbits HD 221287, simply "b ", ie HD 221287 b. HD 221287 b has at least 3.09 (± 0.79) times Jupiter's mass and need for the orbit to its star 456 days. Since direct observation of the planet due to the large distance and high brightness difference is impossible to his star with today's technical resources, most sizes are minimum and maximum sizes. The distance of the planet from its star is on average 1.25 AE.

Swell

• D. Naef, M. Mayor, W. Benz, F. Bouchy, G. Lo Curto, C. Lovis, C. Moutou, F. Pepe, D. Queloz, NC Santos, S. Udry and: [http://www.aanda.org/index.php?option=article&access=standard&Itemid=129&url=/articles/aa/abs/2007/29/aa7361-07/aa7361-07.html The HARPS search for southern extra- solar planets -

IX. Exoplanets orbiting HD 100777, HD 190 647, and HD 221287 ] In:. Astronomy & Astrophysics. 470, 2007, pp. 721-726. Accessed on 22 September 2007.