Health Editor’s Note: Here are a couple of articles on a planet discovered eight years ago that is so far away from its star that one orbit around it’s star takes a million earth years… That is a jaw-dropping stat….Carol
On Planet 2MASS J2126, One Year Lasts for a Million Earth Years
Planet 2MASS J2126, which was considered an independent space body, moves in orbit around the star about one trillion kilometers far from the planet, the Royal Astronomical Society said.
A team of astronomers from the UK, the US and Australia described their discovery in “Monthly Notices” journal of the Royal Astronomical Society.
Scientists discovered the planet as a separate body eight years ago, although they did not think that the planet was orbiting a star. Astronomers believed that planet 2MASS J2126 was a space outcast that was traveling in the universe all by itself. At some point, the astronomers discovered that 2MASS J2126 was orbiting a distant red dwarf star called TYC 9486-927-1. The distance between the planet and the star is 7,000 times larger than between the Earth and the Sun. The planet orbits the star in almost one million earthly years.
The new solar system is almost three times larger than the previously known biggest distance between a planet and a host star, Simon Murphy of the Australian National University said.
See more at http://www.pravdareport.com/news/science/29-01-2016/133197-largest_solar_system-0/
The exoplanet labeled 2MASS J2126 has the widest orbit of any planet ever found. Its “year” is nearly 1 million Earth-years long.
Article by Deborah Byrd in Science Wire
The planets in our solar system orbit our sun, and most known exoplanets orbit distant stars. But, in the past several years, astronomers have located some exoplanets thought to be adrift in space. That was the case with the exoplanet labeled 2MASS J2126. It was thought to be a free floating, or lonely, planet. This week (January 25, 2016), a team of astronomers in the UK, USA and Australia announced that this planet is actually in a gigantic orbit around its star.
In this huge orbit, it’s still pretty lonely. The planet lies a whopping 1 trillion kilometers (0.6 trillion miles) from its star. At this distance from its star, the planet is about 7,000 times the distance between our sun and Earth.
Its huge orbit makes its “year” nearly 1 million Earth-years long (roughly 900,000 years). And that means has completed fewer than 50 orbits over its lifetime.
The astronomers said in a statement:
There’s little prospect of any life on an exotic world like this, but any inhabitants would see their ‘sun’ as no more than a bright star, and might not even imagine they were connected to it at all.
The researchers report the discovery this week in a paper in Monthly Notices of the Royal Astronomical Society.
Astronomer Niall Deacon of the University of Hertfordshire has spent the last few years searching for young stars with companions in wide orbits. As part of the work, his team looked through lists of known young stars, brown dwarfs and free-floating planets to see if any of them could be related. They found 2MASS J2126 moving through space with a star called TYC 9486-927-1.
Both about 104 light-years from our sun, and so it made sense that they are associated. Deacon commented that both members of this system – the widest planet system found so far – has been known for eight years. But, he said:
… Nobody had made the link between the objects before.
The planet is not quite as lonely as we first thought, but it’s certainly in a very long distance relationship.