is an asteroid, classified as

near-Earth object A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (perihelion) is less than 1.3 astronomical units (AU). ...

of the Aten group that is a temporary co-orbital of Venus.

Discovery, orbit and physical properties

was first observed on 12 December 2012 by J. A. Johnson working for the Catalina Sky Survey. As of March 2013, it has been observed 102 times with a data-arc span of 28 days. It is an Aten asteroid and its semi-major axis of 0.72 AU is very similar to that of Venus but its Orbital eccentricity, eccentricity is rather large (0.4332) and its Orbital inclination, inclination of 6.7° is also significant. With an absolute magnitude of 23.4, it has a diameter of approximately 62 to 138 meters. On 26 November 2020 it has been recovered and has now a well established orbit with an uncertainty parameter of 3.

Quasi-satellite dynamical state and orbital evolution

has been identified as a Venus co-orbital following a transitional path between Venus's Lagrangian points and . Besides being a Venus co-orbital configuration, co-orbital, this asteroid is also a List of Mercury-crossing minor planets, Mercury grazer and an List of Earth-crossing minor planets, Earth crosser. exhibits Orbital resonance, resonant (or near-resonant) behavior with Mercury (planet), Mercury, Venus and the Earth. Its short-term dynamical evolution is similar to that of two other Venus co-orbitals, and .

Potentially hazardous asteroid

was included in the Minor Planet Center list of Potentially Hazardous Asteroids (Potentially hazardous asteroid, PHAs) because it comes to within 0.05 AU of Earth periodically, but it has since been removed. It will approach Earth at 0.0055 AU (and the Moon at 0.0045 AU) on 30 December 2028.

Notes

* This is assuming an albedo of 0.25–0.05.

References

;Further reading
Understanding the Distribution of Near-Earth Asteroids
Bottke, W. F., Jedicke, R., Morbidelli, A., Petit, J.-M., Gladman, B. 2000, ''Science'', Vol. 288, Issue 5474, pp. 2190–2194.
A Numerical Survey of Transient Co-orbitals of the Terrestrial Planets
Christou, A. A. 2000, ''Icarus'', Vol. 144, Issue 1, pp. 1–20.
Debiased Orbital and Absolute Magnitude Distribution of the Near-Earth Objects
Bottke, W. F., Morbidelli, A., Jedicke, R., Petit, J.-M., Levison, H. F., Michel, P., Metcalfe, T. S. 2002, ''Icarus'', Vol. 156, Issue 2, pp. 399–433.
Transient co-orbital asteroids
Brasser, R., Innanen, K. A., Connors, M., Veillet, C., Wiegert, P., Mikkola, S., Chodas, P. W. 2004, ''Icarus'', Vol. 171, Issue 1, pp. 102–109.
The population of Near Earth Asteroids in coorbital motion with Venus
Morais, M. H. M., Morbidelli, A. 2006, ''Icarus'', Vol. 185, Issue 1, pp. 29–38.
Asteroid 2012 XE133: a transient companion to Venus
de la Fuente Marcos, C., de la Fuente Marcos, R. 2013, ''Monthly Notices of the Royal Astronomical Society'', Vol. 432, Issue 2, pp. 886–893.
AstDys-2 on 2012 XE133
Retrieved 2013-02-20

External links