Asteroid 2025 PN7 to Accompany Earth Until 2083
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Astronomers say asteroid 2025 PN7 has become a quasi-moon of Earth, sharing our orbit until 2083, according to a paper in IOP Science. Though it can seem to loop around us, experts stress it actually orbits the sun on a path similar to Earth’s and will later shift into a horseshoe pattern. First imaged by the Pan-STARRS telescope on Aug. 29, earlier data show it’s trailed us for decades. It’s extremely faint—magnitude 26—so no second moon will appear to the naked eye.
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