Widest Planet System recently discovered by the astronauts

January 2016, Science and Technology

In Brief:


A team of astronomers of UK, USA and Australia discovered the widest planet system comprising of lonely planet named 2MASS J2126 in a huge orbit around its star TYC 9486-927-1. The discovery was published in Monthly Notices of the Royal Astronomical Society.
Key Characteristic of 2MASS J2126
a) The planet 2MASS J2126 is about 1 trillion (1 million million) kilometres from its parent star, or about 7000 times the distance from the Earth to the Sun.
b) It takes roughly 900000 years for the planet to complete one revolution of the parent star.
c) TYC 9486-927-1 and 2MASS J2126 are moving through space together and are both about 104 light years from the Sun.
d) Based on estimated age, the mass of 2MASS J2126 would be between 11.6 to 15 times the mass of Jupiter. This placed it on the boundary between planets and brown dwarfs.
e) It has a similar mass, age and temperature to one of the first planets directly imaged around another star, beta Pictoris b but unlike Pictoris b is more than 700 times further away from its host star.

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