HD 154857 C

HD 154857 C

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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 154857 c is an unconfirmed extrasolar planet located approximately 224 light-years away in the constellation of Ara, orbiting the star HD 154857. This planet takes at least 1900 days (5.2 years) to orbit the star. It was discovered on 9 February 2007 by O'Toole in Australia using the method Doppler spectroscopy, along with HD 23127 b and HD 159868 b. The orbit has not yet been completely observed, so the values quoted are lower limits. The best fit solution gives a period of 7.94 years and a minimum mass of 18.4 Jupiter masses, which would imply that it is in fact a brown dwarf.show more

Product details

  • Paperback | 104 pages
  • 152 x 229 x 6mm | 163g
  • Loc Publishing
  • United States
  • English
  • 613669073X
  • 9786136690735