Astronomy:2014 EC
| Discovery[1][2] | |
|---|---|
| Discovered by | Catalina Sky Srvy. |
| Discovery site | Mount Lemmon Obs. |
| Discovery date | 5 March 2014 |
| Designations | |
| 2014 EC | |
| Minor planet category | NEO · Apollo[1][2] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 6 | |
| Observation arc | (1 day) |
| |{{{apsis}}}|helion}} | 2.2257 AU |
| |{{{apsis}}}|helion}} | 0.6917 AU |
| 1.4587 AU | |
| Eccentricity | 0.5258 |
| Orbital period | 1.76 yr (644 days) |
| Mean anomaly | 325.66° |
| Mean motion | 0° 33m 33.84s / day |
| Inclination | 1.4023° |
| Longitude of ascending node | 344.98° |
| 264.04° | |
| Earth MOID | 0.0005 AU · 0.2 LD |
| Physical characteristics | |
| Dimensions | 7 m (estimate at 0.20)[3] 10 m[4] |
| Absolute magnitude (H) | 28.2[1] |
2014 EC is a 10-meter sized, eccentric asteroid, classified as near-Earth object of the Apollo group that passed within 48,000 miles (77,000 km) of Earth in early March 2014. This was six times closer to the Earth than the Moon.[4][5] It was first observed on 5 March 2014, by the Catalina Sky Survey at Mount Lemmon Observatory in Arizona, United States. As of 2017, it has not since been observed.[2]
Description
2014 EC has only been observed on two nights for a period of less than 48 hours, with a remaining orbital uncertainty of 4 and 6 respectively.[1][2] It orbits the Sun at a distance of 0.7–2.2 AU once every 21 months (644 days). Its orbit has an eccentricity of 0.53 and an inclination of 1° with respect to the ecliptic.[1]
The asteroid has an Earth minimum orbital intersection distance of 0.0005 AU (74,800 km) which translates into less than 0.2 lunar distances.[1]
Based on a generic magnitude-to diameter conversion, 2014 EC measures 7 meters in diameter, for a measured absolute magnitude of 28.2 and an assumed albedo of 0.2, which is typical value for stony S-type asteroids.[3] Other sources estimated the body to be approximately 10 meters or 30 feet across.[4] It is too small for being a potentially hazardous asteroid, which require an absolute magnitude of 22.0 or less.[6]
See also
- List of asteroid close approaches to Earth in 2014
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "JPL Small-Body Database Browser: (2014 EC)". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3663062. Retrieved 2 August 2017.
- ↑ 2.0 2.1 2.2 2.3 "2014 EC". Minor Planet Center. http://www.minorplanetcenter.net/db_search/show_object?object_id=2014+EC. Retrieved 2 August 2017.
- ↑ 3.0 3.1 "Asteroid Size Estimator". CNEOS/JPL. https://cneos.jpl.nasa.gov/tools/ast_size_est.html.
- ↑ 4.0 4.1 4.2 "Even tinier asteroid 2014 EC flies just 48,000 miles from Earth tomorrow". Astro Bob. 5 March 2014. http://astrobob.areavoices.com/2014/03/05/even-tinier-asteroid-2014-ec-flys-just-48000-miles-from-earth-tomorrow/. Retrieved 2 August 2017.
- ↑ Mike Wall (6 March 2014). "Small Asteroid Gives Earth a Close Shave, 3rd in 2 Days". Space.com. https://www.space.com/24968-small-asteroid-2014ec-earth-close-shave.html. Retrieved 2 August 2017.
- ↑ "Glossary – PHA (Potentially Hazardous Asteroid)". CNEOS/JPL. https://cneos.jpl.nasa.gov/glossary/PHA.html.
External links
- Small Asteroid Will Pass Earth Safely on Thursday (NASA)
- http://www.space.com/24968-small-asteroid-2014ec-earth-close-shave.html
- 2014 EC at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2014 EC at ESA–space situational awareness
- 2014 EC at the JPL Small-Body Database
2014 in space | ||
|---|---|---|
| Space probes launches |
|    |
| Impact events | ||
| Supernovae | ||
| Notable comets |
| |
| NEOs | ||
| Exoplanets | ||
| Discoveries |
| |
| Space exploration |
| |
 |  |
