Three super-Earths orbiting nearby star discovered

Scientists have discovered three planets orbiting a nearby star named HD 7924 that is only 54 light-years away.
These planets were discovered by Automated Planet Finder (APF) Telescope located at Lick Observatory in California and W M Keck Observatory, Hawaii.
They were traced out using the Doppler technique and the APT made crucial measurements of the brightness of HD 7924 to assure the validity of the planet discoveries.
Each of the discovered planets has mass 7 to 8 times that of Earth and complete their orbit’s in just 5, 15, and 24 days around HD 7924.
The first evidence of planets orbiting HD 7924 was found by the Keck Observatory in 2009 using the HIRES instrument installed on the 10-meter Keck I telescope.
Two additional planets orbiting HD 7924 were later discovered by Keck Observatory after additional observations and the campaign by the APF Telescope.

Month: Current Affairs - April, 2015