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]
Discovery[1][2] | |
---|---|
Discovered by | Mount Lemmon Srvy. |
Discovery site | Mount Lemmon Obs. |
Discovery date | 1 December 2008 |
Designations | |
MPC designation | 2014 UR116 |
Alternative designations | 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) |
Aphelion | 3.5757 AU |
Perihelion | 0.5648 AU |
Semi-major axis | 2.0703 AU |
Eccentricity | 0.7272 |
Orbital period (sidereal) | 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° |
Argument of perihelion | 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 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]
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]
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]
Small Solar System bodies | |||||||
---|---|---|---|---|---|---|---|
Minor planets |
| ||||||
Comets |
| ||||||
Other |
|