It seems the moon is not Earth’s only cosmic companion.
The newly discovered asteroid 2016 HO3 orbits the sun in such a way that the space rock never strays too far from Earth, making it a “quasi-satellite” of our planet, scientists say.
“One other asteroid — 2003 YN107 — followed a similar orbital pattern for a while over 10 years ago, but it has since departed our vicinity,” Paul Chodas, manager of NASA’s Center for Near-Earth Object Studies at the Jet Propulsion Laboratory in Pasadena, California, said in a statement Wednesday (June 15).
“This new asteroid is much more locked onto us,” Chodas added. “Our calculations indicate 2016 HO3 has been a stable quasi-satellite of Earth for almost a century, and it will continue to follow this pattern as Earth’s companion for centuries to come.”
Indeed, 2016 HO3 is the best example of an Earth quasi-satellite ever found, scientists said.
The asteroid was discovered on April 27 by scientists using the Pan-STARRS 1 survey telescope in Hawaii. 2016 HO3’s exact size is unknown, but researchers think it’s between 130 feet and 330 feet wide (40 to 100 meters).
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SOURCE: Mike Wall
Space.com
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