(386454) 2008 Xm

(386454) 2008 XM
Discovery
Discovered by	LINEAR
Discovery site	Lincoln Lab's ETS
Discovery date	2 December 2008
Designations
MPC designation	(386454) 2008 XM
Alternative designations	2008 XM
Minor planet category	Apollo · NEO · PHA
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	5.16 yr (1,884 days)
\|{{{apsis}}}\|helion}}	2.3334 AU
\|{{{apsis}}}\|helion}}	0.1111 AU
Semi-major axis	1.2222 AU
Eccentricity	0.9091
Orbital period	1.35 yr (494 days)
Mean anomaly	204.67°
Mean motion	0° 43m 45.84s / day
Inclination	5.4478°
Longitude of ascending node	240.63°
\|{{{apsis}}}\|helion}}	27.357°
Earth MOID	0.0048 AU · 1.9 LD
Physical characteristics
Mean diameter	0.367±0.009 km
Geometric albedo	0.128±0.032
Absolute magnitude (H)	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.^[2]

Orbit and classification

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.^[1] 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 (137924) 2000 BD19 and (374158) 2004 UL.^{[citation needed]} Its Earth minimum orbital intersection distance of 0.0047 AU (700,000 km) corresponds to only 1.9 lunar distances.^[1]

Physical characteristics

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 367±9 meters in diameter and its surface has an albedo of 0.128.^[3] As of 2016, the body's composition and spectral type, as well as its rotation period and shape remains unknown.^[1]

Naming

As of 2020, this minor planet remains unnamed.^[2]

References

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 "JPL Small-Body Database Browser: 386454 (2008 XM)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2386454. Retrieved 2 June 2017.
↑ ^2.0 ^2.1 ^2.2 "386454 (2008 XM)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=386454. Retrieved 26 October 2016.
↑ ^3.0 ^3.1 ^3.2 Mainzer, A.; Bauer, J.; Grav, T.; Masiero, J.; Cutri, R. M.; Wright, E. et al. (April 2014). "The Population of Tiny Near-Earth Objects Observed by NEOWISE". The Astrophysical Journal 784 (2): 7. doi:10.1088/0004-637X/784/2/110. Bibcode: 2014ApJ...784..110M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...784..110M. Retrieved 26 October 2016.

External links

Asteroid Lightcurve Database (LCDB), query form (info )
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
(386454) 2008 XM at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
(386454) 2008 XM at ESA–space situational awareness
- Ephemerides · Observations · Orbit · Physical Properties · Summary
(386454) 2008 XM at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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Original source: https://en.wikipedia.org/wiki/(386454) 2008 XM. Read more

[jpldata-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 "JPL Small-Body Database Browser: 386454 (2008 XM)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2386454. Retrieved 2 June 2017.

[MPC-386454-2] 2.0 ^2.1 ^2.2 "386454 (2008 XM)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=386454. Retrieved 26 October 2016.

[Mainzer-2014-3] 3.0 ^3.1 ^3.2 Mainzer, A.; Bauer, J.; Grav, T.; Masiero, J.; Cutri, R. M.; Wright, E. et al. (April 2014). "The Population of Tiny Near-Earth Objects Observed by NEOWISE". The Astrophysical Journal 784 (2): 7. doi:10.1088/0004-637X/784/2/110. Bibcode: 2014ApJ...784..110M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...784..110M. Retrieved 26 October 2016.

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