This new data could help scientists better understand the formation of planets.
The team published its detailed findings inSo far, over 5,000 extrasolar planets have been discovered. However, only three of those were discovered using the same technique – astrometry– used to find this binary star-planet system.
The two stars in question, which are called GJ 896AB, are about 20 light-years from Earth, making them close neighbors of ours by astronomical standards. They're red dwarf stars, the most common kind in our Milky Way galaxy, and the larger one, around which the planet orbits, has about 44 percent of the mass of our Sun, while the smaller is about 17 percent as massive as the Sun.
The astronomers were able to calculate that the planet has roughly twice the mass of Jupiter and orbits the star every 284 Earth days. It sits at a distance a little less than Venus’ distance from the Sun. The planet’s orbit is inclined roughly 148 degrees from the orbits of the two stars.
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