2012 XE133

2012 XE₁₃₃

Discovery
Discovered by	Catalina Sky Survey
Discovery date	12 December 2012
Designations
MPC designation	2012 XE133
Minor planet category	Aten asteroid[1][2] Mercury grazer Venus crosser Earth crosser
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 6
Aphelion	1.0360 AU (154.98 Gm)
Perihelion	0.40995 AU (61.328 Gm)
Semi-major axis	0.72300 AU (108.159 Gm)
Eccentricity	0.43299
Orbital period (sidereal)	0.61 yr (224.5 d)
Mean anomaly	194.21°
Mean motion	1.6032°/day
Inclination	6.7094°
Longitude of ascending node	281.088°
Argument of perihelion	337.096°
Earth MOID	0.00246932 AU (369,405 km)
Physical characteristics
Dimensions	72 m^[a][3]
Absolute magnitude (H)	23.4[2]

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

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. On 26 November 2020 it has been recovered and has now a well established orbit with an uncertainty parameter of 3.^[citation needed]

Quasi-satellite dynamical state and orbital evolution

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 Zoozve.[4]

Potentially hazardous asteroid

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.^[citation needed]

See also

• (322756) 2001 CK32
• 524522 Zoozve
• 2013 ND15

Notes

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

References

1. List Of Aten Minor Planets
2. "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. de la Fuente Marcos, C.; de la Fuente Marcos, R. (2013). "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

• 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

• 2012 XE₁₃₃ data at MPC
• List of Potentially Hazardous Asteroids (PHAs)
• 2012 XE133 at NeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
• 2012 XE133 at ESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical properties · Summary
• 2012 XE133 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters