2012 XE133

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2012 XE133
Discovered byCatalina Sky Survey
Discovery dateDecember 12, 2012
2012 XE133
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 6
Aphelion1.0360 AU (154.98 Gm)
Perihelion0.40995 AU (61.328 Gm)
0.72300 AU (108.159 Gm)
0.61 yr (224.5 d)
Earth MOID0.00246932 AU (369,405 km)
Physical characteristics
Dimensions72 m[a][3]

2012 XE133 is an asteroid, classified as near-Earth object of the Aten group that is a temporary co-orbital of Venus.[4]

Discovery, orbit and physical properties[edit]

2012 XE133 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 eccentricity is rather large (0.4332) and its inclination of 6.7° is also significant. With an absolute magnitude of 23.4, it has a diameter of approximately 62 to 138 meters.

Quasi-satellite dynamical state and orbital evolution[edit]

2012 XE133 has been identified as a Venus co-orbital following a transitional path between Venus's Lagrangian points L5 point and L3 point.[4] Besides being a Venus co-orbital, this asteroid is also a Mercury grazer and an Earth crosser. 2012 XE133 exhibits resonant (or near-resonant) behavior with Mercury, Venus and the Earth.[4] Its short-term dynamical evolution is similar to that of two other Venus co-orbitals, 2001 CK32 and 2002 VE68.[4]

Potentially hazardous asteroid[edit]

2012 XE133 was included in the Minor Planet Center list of Potentially Hazardous Asteroids (PHAs) because it comes to within 0.05 AU of Earth periodically,[citation needed] 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.

See also[edit]


  • ^ This is assuming an albedo of 0.25–0.05.


  1. ^ List Of Aten Minor Planets
  2. ^ a b c "2012 XE133". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3620867. Retrieved 3 April 2016.
  3. ^ "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 16 February 2018.
  4. ^ a b c d de la Fuente Marcos, C.; de la Fuente Marcos, R. "Asteroid 2012 XE133, a transient companion to Venus". Monthly Notices of the Royal Astronomical Society. 432 (2): 886–893. arXiv:1303.3705. Bibcode:2013MNRAS.432..886D. doi:10.1093/mnras/stt454.
Further reading

External links[edit]