| Discovery | |
|---|---|
| Discovered by | Mt. Lemmon Survey |
| Discovery site | Summerhaven, Arizona, USA |
| Discovery date | March 2, 2013 |
| Designations | |
| MPC designation | 2013 EC |
| Alternative designations | MPO 256829 |
| Minor planet category | Apollo  NEO |
| Orbital characteristics | |
| Epoch 3 March 2013 (JD 2456354.5) | |
| Uncertainty parameter 7 | |
| Observation arc | 1 d |
| Aphelion | 3.66151 AU (547.754 Gm) |
| Perihelion | 0.65528 AU (98.028 Gm) |
| Semi-major axis | 2.15839 AU (322.891 Gm) |
| Eccentricity | 0.69641 |
| Orbital period (sidereal) | 3.17 yr (1158.23 d) 3.17 yr |
| Mean anomaly | 345.65° |
| Mean motion | 0° 18 35.676 /day |
| Inclination | 6.02802° |
| Longitude of ascending node | 342.373° |
| Argument of perihelion | 261.34° |
| Earth MOID | 0.00239372 AU (358,095 km) |
| Mercury MOID | 0.1939 AU (29,010,000 km) |
| Jupiter MOID | 1.45575 AU (217.777 Gm) |
| Physical characteristics | |
| Absolute magnitude (H) | 27.8 |
2013 EC is a near-Earth asteroid that passed Earth just inside the orbit of the Moon, with its closest approach on March 4, 2013 at 07:35 UTC. 2013 EC was discovered by the Mount Lemmon Observatory in Arizona, United States, on March 2, 2013. Asteroid 2013 EC is estimated to be equal in size to the Chelyabinsk meteor that impacted on February 15, 2013. Its measurement is about 10 to 17 meters (33 to 56 ft) wide.
2013 EC was one of four asteroids that passed in the vicinity of Earth during one week in early March 2013. The other asteroids in this group besides 2013 EC, included 2013 ET (2.5 lunar distances), 2013 EC20, and 2013 EN20.
See also
- List of asteroid close approaches to Earth in 2013
- Near-Earth Asteroid Tracking
- List of Near-Earth asteroids by distance from Sun
- List of asteroid close approaches to Earth
- 2012 DA14
- 99942 Apophis
- 2013 ET
- 2013 PJ10
References
- ^ "2013 EC". Minor Planet Center. Retrieved 15 August 2017.
- ^ "(2013 EC)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3629085. Retrieved 15 August 2017.
- Universe Today: Newly Found Asteroid to Pass Within Moon’s Orbit on March 4, 2013
- The Watchers: A newly found Asteroid 2013 EC will pass inside the orbit of the Moon on March 4, 2013
- International Business Times: Newly Discovered Asteroid 2013 EC Makes Near-Earth Flyby on March 4
- ^ "Four Asteroids Buzz Earth in Single Week". Space.com. Retrieved 13 November 2018.
External links
- 2013 EC at the JPL Small-Body Database
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