Astronomy:2014 UR116
| Discovery[1][2] | |
|---|---|
| Discovered by | Mount Lemmon Srvy. |
| Discovery site | Mount Lemmon Obs. |
| Discovery date | 1 December 2008 |
| Designations | |
| 2014 UR116 | |
| 2014 UR116 · 2008 XB | |
| Minor planet category | Apollo · NEO · PHA[1][2] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 8.23 yr (3,005 days) |
| |{{{apsis}}}|helion}} | 3.5757 AU |
| |{{{apsis}}}|helion}} | 0.5648 AU |
| 2.0703 AU | |
| Eccentricity | 0.7272 |
| Orbital period | 2.98 yr (1,088 days) |
| Mean anomaly | 2.0212° |
| Mean motion | 0° 19m 51.24s / day |
| Inclination | 6.5740° |
| Longitude of ascending node | 6.0028° |
| 286.79° | |
| Earth MOID | 0.0290 AU · 11.3 LD |
| Physical characteristics | |
| Dimensions | 0.4 km[3] |
| Absolute magnitude (H) | 19.7[1] |
2014 UR116, also known as 2008 XB, is an eccentric sub-kilometer asteroid, categorized as a near-Earth object and potentially hazardous asteroid of the Apollo group with a diameter of approximately 400 meters (1,300 ft).[3] It was first observed on 1 December 2008, by the Mount Lemmon Survey at Mount Lemmon Observatory in Arizona, United States.[2]
Orbit
2014 UR116 orbits the Sun at a distance of 0.6–3.6 AU once every 3 years (1,088 days). Its orbit has an eccentricity of 0.73 and an inclination of 7° with respect to the ecliptic.[1]
Close approaches
The asteroid has an Earth minimum orbital intersection distance of 0.0290 AU (4,340,000 km) which translates into 11.3 lunar distances.[1] On 21 October 2014, it passed 0.0854 AU (12,780,000 km; 7,940,000 mi) from Earth.[4] On 10 April 2047, the asteroid will safely pass 0.0296 AU (4,430,000 km; 2,750,000 mi) from Earth.[4]
Although some inaccurate press reports have suggested that it may pose an impact risk to Earth, the NASA/JPL Near Earth Object Program Office reported that it poses no risk of impact to any planet for at least 150 years.[3][5] Between 1904 and 2174, the closest approach it makes to any planet was on 9 June 2008 when it passed 0.0144 AU (2,150,000 km; 1,340,000 mi) from Mars. The asteroid has never been listed on the Sentry Risk Table and has a well determined orbit with an observation arc of 6 years.[4]
Discovery
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] It was only recovered as 2014 UR116 on 27 October 2014, by observers at the MASTER-II Observatory (C41) at Pulkovo Observatory in Kislovodsk, Russia.[4]
See also
- 2014 OO6, one of the most dangerous asteroids discovered in 2014 that is on the Sentry Risk Table
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "JPL Small-Body Database Browser: (2014 UR116)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3440794.
- ↑ 2.0 2.1 2.2 2.3 "2014 UR116". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2014+UR116.
- ↑ 3.0 3.1 3.2 Yeomans, Don; Baalke, Ron (8 December 2014). "Asteroid 2014 UR116, A 400-meter Sized Near-Earth Asteroid, Represents No Threat to the Earth". NASA/JPL Near-Earth Object Program Office. http://neo.jpl.nasa.gov/news/news187.html.
- ↑ 4.0 4.1 4.2 4.3 "JPL Close-Approach Data: (2014 UR116)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014UR116;cad=1#cad.
- ↑ "NASA Says Asteroid 2014 UR116 Is Nothing to Be Afraid Of". NBC News. 9 December 2014. http://www.nbcnews.com/science/space/nasa-says-asteroid-2014-ur116-nothing-be-afraid-n264281.
- ↑ "MPEC 2008-X16 : 2008 XB". IAU Minor Planet Center. 1 December 2008. https://www.minorplanetcenter.org/mpec/K08/K08X16.html. (K08X00B)
External links
- 2014 UR116 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2014 UR116 at ESA–space situational awareness
- 2014 UR116 at the JPL Small-Body Database
 |  |
