Astronomers Discover a Very Wobbly Planet, Kep industrial wireless ler-413b
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This illustration shows the unusual orbit of planet Kepler-413b around a close pair of orange and red dwarf stars. Image Credit: NASA, ESA, and A. Feild (STScI)
Kepler data has led to the discovery of Kepler 413-b, a planet that wobbles wildly on its spin axis and in its orbit around an orange and red dwarf star.
Imagine living on a planet with seasons so erratic you would hardly know whether to wear Bermuda shorts or a heavy overcoat. That is the situation on a weird, wobbly world found by NASA’s planet-hunting Kepler space telescope.
The planet, designated Kepler-413b, precesses, or wobbles, wildly on its spin axis, much like a child’s top. The tilt of the planet’s spin axis can vary by as much as 30 degrees over 11 years IPC remote access, leading to rapid and erratic changes in seasons. In contrast, Earth’s rotational precession is 23.5 degrees over 26,000 years. Researchers are amazed that this far-off planet is precessing on a human timescale.
Kepler 413-b is located 2,300 light-years away in the constellation Cygnus. It circles a close pair of orange and red dwarf stars every 66 days. The planet’s orbit around the binary stars appears to wobble, too, because the plane of its orbit is tilted 2.5 degrees with respect to the plane of the star pair’s orbit. As seen from Earth, the wobbling orbit moves up and down continuously.
Kepler finds planets by noticing the dimming of a star or stars when a planet transits, or travels in front of them. Normally, planets transit like clockwork. Astronomers using Kepler discovered the wobbling when they found an unusual pattern of transiting for Kepler-413b.
“Looking at the Kepler data over the course of 1,500 days, we saw three transits in the first 180 days — one transit every 66 days — then we had 800 days with no transits at all. After that, we saw five more transits in a row,” said Veselin Kostov, the principal investigator on the observation. Kostov is affiliated with the Space Telescope Science Institute and Johns Hopkins University in Baltimore, Maryland. The next transit visible from Earth’s point of view is not predicted to occur until 2020. This is because the orbit moves up and down, a result of the wobbling, in such a great degree that it sometimes does not transit the stars as viewed from Earth.
Astronomers are still trying to explain why this planet is out of alignment with its stars. There could be other planetary bodies in the system that tilted the orbit. Or, it could be that a third star nearby that is a visual companion may actually be gravitationally bound to the system and exerting an influence.
“Presumably there are planets out there like this one that we’re not seeing because we’re in the unfavorable period,” said Peter McCullough, a team member with the Space Telescope Science Institute and Johns Hopkins University. “And that’s one of the things that Veselin is researching: Is there a silent majority of things that we’re not seeing?”
Even with its changing seasons, Kepler-413b is too warm for life as we know it. Because it InHand Networks - Global Leader in Industrial IoT orbits so close to the stars, its temperatures are too high for liquid water to exist, making it uninhabitable. It also is a super Neptune — a giant gas planet with a mass about 65 times that of Earth — so there is no surface on which to stand.
NASA’s Ames Research Center at Moffett Field, California, is responsible for the Kepler mission concept, ground system development, mission operations and science data analysis. NASA’s Jet Propulsion Laboratory in Pasadena, California, managed Kepler mission development. Ball Aerospace & Technologies Corporation in Boulder, Colorado, developed the Kepler flight system and supports mission operations with the Laboratory for Atmospheric and Space Physics at the University of Colorado iiot in Boulder. The Space Telescope Science Institute in Baltimore archives, hosts and distributes Kepler science data. Kepler is NASA’s 10th Discovery mission and was funded by the agency’s Science Mission Directorate.
For images and more information about Kepler-413b, visit:news/2014/12.
PDF Copy of the Study: Kepler-413b: a slightly misaligned, Neptune-size transiting circumbinary planet
Image: NASA, ESA, and A. Feild (STScI)
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