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SO WHAT EXACTLY HAPPENED?
- A pair of astronomers discovered the miniature moon on the night of February 15. It showed up in the nightly observations of the Catalina Sky Survey, a NASA-funded project in
- The new mini-moon, 2020 CD3, was discovered using a 1.52-metre telescope at Mount Lemmon Observatory near Tucson, Arizona
NEW MOON
- “Earth has a new temporarily captured object/possible mini-moon called 2020 CD3.
- On the night of Feb. 15, my Catalina Sky Survey teammate Teddy Pruyne and I found a 20th magnitude object,” Kacper Wierzchos, a researcher with the Catalina Sky Survey at the University of Arizona’s Lunar and Planetary Lab
DETAILS
- The orbit of the newly discovered object, 2020 CD3, shows that it entered Earth’s orbit some three years ago
- he object has a diameter between 1.9 – 3.5 metre (6.2 and 11.5 feet) assuming a C-type asteroid albedo. But it’s a big deal as out of approximately 1 million known asteroids, this is just the second asteroid known to orbit Earth (after 2006 RH120, which was also discovered by the Catalina Sky Survey)
DETAILS
- Until now, only one such satellite has been discovered — a three feet wide asteroid called 2006 RH120, which orbited Earth for 18 months in 2006 and 2007.
- The new mini-moon, 2020 CD3, was discovered using a 1.52-metre telescope at Mount Lemmon Observatory near Tucson, Arizona