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The minimum orbit intersection distance (MOID) between an asteroid and the Earth is the distance between the closest points of their orbits. This first check is a coarse measure that does not allow an impact prediction to be made, but is based solely on the orbit parameters and gives an initial measure of how close to Earth the asteroid could come.
2024 XA 1, formerly designated as C0WEPC5, is a small meteoroid that fell over eastern Siberia near the city of Olekminsk on 3 December 2024, 16:15 GMT, around 1,000 kilometers east of the Tunguska event impact location.
This asteroid travels in both the main-belt and in the near-Earth region. It passed Earth on 29 June 2024 at a distance of 184,000 miles (295,000 kilometers). That distance is about 0.77 lunar distances (LD). [2] The close approach with Earth changed 2024 MK's orbit, shortening its orbital period by about 24 days.
On 5 March 2001, 1950 DA made a close approach to Earth at a distance of 0.05207 AU (7.790 million km; 4.840 million mi; 20.26 LD). [17] It was studied by radar at the Goldstone and Arecibo observatories from March 3 to 7, 2001. [5] The studies showed that the asteroid has a mean diameter of 1.1 km, assuming that 1950 DA is a retrograde rotator ...
2024 UQ, designated formerly as A11dc6D, was a one-meter meteoroid that struck the Earth's atmosphere and burned up harmlessly on 22 October 2024 above the Pacific Ocean off the coast of California. 2024 UQ is the tenth impact event that was successfully predicted, which was discovered by the ATLAS survey.
Over the course of its orbit, its distance from the Sun ranges from 0.61 AU at perihelion to 1.39 AU at aphelion, crossing the orbits of Venus and Earth. Since its orbit crosses Earth's while having a semi-major axis greater than 1 AU (by a small margin), 2020 XL 5 is classified as an Apollo asteroid .
1998 KY 26 orbits the Sun at a distance of 1.0–1.5 AU once every 16 months (500 days). Its orbit has an eccentricity of 0.20 and an inclination of 1° with respect to the ecliptic. It has an Earth minimum orbital intersection distance of approximately 0.0025 AU (374,000 km; 232,000 mi), corresponding to 0.98 lunar distances. [1]
The asteroid was first detected on 1 December 2008 by the Mount Lemmon Survey and received the provisional designation 2008 XB. [2] However, at an apparent magnitude of 20 and an assumed orbital eccentricity of 0.3, the object had a very short observation arc of less than 2 hours and the body became a lost minor planet . [ 6 ]