TNPSC Thervupettagam

New planet - HD 21749b

January 9 , 2019 2020 days 941 0
  • NASA’s Transiting Exoplanet Survey Satellite (TESS) has discovered a planet named HD21749b orbiting around the star HD 21749.
  • The planet lies about 53 light years from earth in the faint constellation reticulum.
  • HD 21749b completes one orbit of its host star, which is nearly as bright as our sun, every 36 earth days.
  • It is a “sub Neptune”, around three times bigger than earth and 23 times more massive then earth, which means it’s likely gaseous rather than rocky.

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