668956 (2012 PM₃₅)
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668956 (2012 PM₃₅), also known as 2020 OG₁₀₆, is a small main-belt asteroid that made a very close encounter with Ceres in 2017. It flew past the dwarf planet at a distance of 235,000 km (146,000 mi) which is sufficient enough that its gravity was able to slightly perturb the asteroid's orbit and was temporarily lost until 2020. With an absolute magnitude of 17.1, 2012 PM₃₅ is estimated to be around 0.9–2.3 km in diameter.
Orbit of the asteroid 668956 (2012 PM₃₅) from 1900 to 2100
A close encounter between Ceres and 2012 PM₃₅ magnified to 93 times that of normal FOV, 2017-Sept-30
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