Home > Astronomy, General Astronomy, Star & Solar System Formation > NASA, Texas Astronomers Find First Multi-Planet System Around A Binary Star

NASA, Texas Astronomers Find First Multi-Planet System Around A Binary Star


NASA’s Kepler mission has found the first multi-planet solar system orbiting a binary star, characterized in large part by University of Texas at Austin astronomers using two telescopes at the university’s McDonald Observatory in West Texas. The finding, which proves that whole planetary systems can form in a disk around a binary star, is published in today’s issue of the journal Science.

The binary star in question is called Kepler-47. The primary star is about the same mass as the Sun, and its companion is an M-dwarf star one-third its size. The inner planet is three times the size of Earth and orbits the binary star every 49.5 days, while the outer planet is 4.6 times the size of Earth with an orbit of 303.2 days.

Full Story: http://mcdonaldobservatory.org/news/releases/2012/0829

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