Minorplanet: | yes |
(386454) 2008 XM | |
Background: |
|
Discovered: | 2 December 2008 |
Mpc Name: | (386454) 2008 XM |
Alt Names: | 2008 XM |
Epoch: | 4 September 2017 (JD 2458000.5) |
Uncertainty: | 0 |
Observation Arc: | 5.16 yr (1,884 days) |
Perihelion: | 0.1111 AU |
Semimajor: | 1.2222 AU |
Eccentricity: | 0.9091 |
Period: | 1.35 yr (494 days) |
Mean Motion: | / day |
Inclination: | 5.4478° |
Asc Node: | 240.63° |
Arg Peri: | 27.357° |
Mean Diameter: | km |
Abs Magnitude: | 20.0 |
(386454) 2008 XM is a highly eccentric, sub-kilometer-sized asteroid, with one of the smallest known perihelions among all minor planets. It is classified as near-Earth object of the Apollo group and was discovered on 2 December 2008, by the LINEAR program at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, United States.
The asteroid orbits the Sun at a distance of 0.1–2.3 AU once every 16 months (494 days). Its orbit has an eccentricity of 0.91 and an inclination of 5° with respect to the ecliptic. Due to its outstanding eccentricity, it is also a Mercury-crosser, Venus-crosser and Mars-crosser.
It has the third-smallest perihelion of any numbered asteroid behind and . Its Earth minimum orbital intersection distance of 0.0047AU corresponds to only 1.9 lunar distances.
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures meters in diameter and its surface has an albedo of 0.128. As of 2016, the body's composition and spectral type, as well as its rotation period and shape remains unknown.
As of 2020, this minor planet remains unnamed.