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2014 JO25 is a near-Earth asteroid. It was discovered in May 2014 by astronomers at the Catalina Sky Survey near Tucson, Arizona - a project of NASA's NEO (Near Earth Object) Observations Program in collaboration with the University of Arizona.
(163899) 2003 SD220 is a sub-kilometer asteroid and tumbling slow rotator, classified as near-Earth object and potentially hazardous asteroid of the Aten group, which orbit the Sun between Venus and Earth. Its orbital period of 0.75 years means that it orbits the Sun about 4 times for every 3 of the Earth. It was discovered on 29 September 2003, by astronomers of the Lowell Observatory Near-Earth-Object Search at Anderson Mesa Station near Flagstaff, Arizona.
(505657) 2014 SR339, provisional designation 2014 SR339, is a dark and elongated asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 970 meters (3,200 feet) in diameter. It was discovered on 30 September 2014, by NASA's Wide-field Infrared Survey Explorer telescope (WISE) in Earth's orbit. Closely observed at Goldstone and Arecibo in February 2018, it has a rotation period of 8.7 hours.
References
- 1 2 3 4 "JPL Small-Body Database Browser: 163249 (2002 GT)". 4 March 2009. Retrieved 7 April 2016.
- ↑ 45th Meeting of the American Astronomical Society's Division for Planetary Sciences, October 2013, page 6
- 1 2 3 Stephen Clark, "Deep Impact sets path for asteroid encounter in 2020". Spaceflight Now. 18 December 2011.
- ↑ Emily Lakdawalla blog entry: "Deep Impact targets possible 2020 asteroid flyby". 5 October 2012.
- ↑ Asteroid and Comet Mission Targets Observed by Radar (archived version, 19 Dec 2013)
- ↑ NASA calls off search for lost Deep Impact comet probe - Australian Broadcasting Corporation - Retrieved 21 September 2013.
- ↑ "NASA Declares End to Deep Impact Comet Mission Communication cutoff leads to loss of comet hunter, say space officials". National Geographic. 20 September 2013. Archived from the original on 23 September 2013.
- ↑ "Re: [tz] Deep Impact: wrong time zone?". tz@iana.org. 23 September 2013. Archived from the original on 2 October 2013. Retrieved 23 September 2020.
