The Earth Has a Second Moon, And No One Noticed All This While.
Astronomers first spotted the object, a car-size asteroid called 2020 CD3, on 15th February at Mount Lemmon Observatory, Arizona. However, this tiny moon is not very similar to our moon.
Incidentally, this isn’t the first-time earth has had an additional moon, albeit temporarily.
On the night of Feb. 15, my Catalina Sky Survey teammate Teddy Pruyne and I found a 20th magnitude object.
Earth's second moon, a "mini-moon" dubbed 2020 CD3, is about the size of a small car and may have been trapped in our planet's orbit for years.
He added that the discovery is a "big deal" because, out of roughly 1 million known space rocks, this is "just the second asteroid known to orbit Earth (after 2006 RH120, which was … The moon has been in our planet’s orbit since about three years ago but was just seen with the help of a ground-based telescope. "Earth has a new temporarily captured object/Possible mini-moon called 2020 CD3. The white band is the orbit of Earth’s main, permanent, moon. So-called “mini-moons” like this one come and go, and 2020 CD₃ is probably already on its final loop before breaking free. Earth has a new temporarily captured object/Possible mini-moon called 2020 CD3. By Sean Martin PUBLISHED: 07:57, Fri, Feb 28, 2020 It acts as a temporary mini-moon whirling around our planet, and is likely drop out of orbit around the Earth in April. Wierzchos said that the object measures about 6 feet to 11 feet across and that its orbit suggests that it entered Earth's orbit around three years ago. On the night of Feb. 15, my Catalina Sky Survey teammate Teddy Pruyne and I found a 20th magnitude object. If the discovery holds up, the object, named 2020 CD3 for now, would be the second mini-moon ever found. The researchers say the new and perhaps temporary minimoon is probably between 1.9 meters and 3.5 metres across, which is around the same size as a mid-size car. The Earth’s second moon is smaller than our primary natural satellite, and it’s called a minimoon. Astronomers believe they have spotted the second “mini-moon” ever recorded. Earth’s new ‘mini-moon’ is leaving soon. It is only the second asteroid known to orbit the Earth at the moment. The discovery of the minimoon. EARTH now has a second moon in its orbit, rivalling the white lunar satellite which circles our planet, scientists have revealed. Deep ‘Solar Minimum’ Feared As 2020 Sees Record-Setting 100-Day Slump. In the meantime, 2020 CD3 continues on its path away from Earth, growing fainter by the second. On the night of Feb. 15, my Catalina Sky Survey teammate Teddy Pruyne and I found a 20th magnitude object." But it’ll be back. But it’ll be back.
According to the researchers, the 2020 CD3 appears to have been orbiting our planet since it was first captured by the Earth's gravity three years ago.