|Discovered by||E. J. Christensen (Catalina Sky Survey)|
|Discovery date||May 6, 2006|
|MPC designation||2006 JY26|
|Apollo NEO, PHA
|Epoch 13 January 2016 (JD 2457400.5)|
|Uncertainty parameter 3|
|Aphelion||1.094127 AU (163.6791 Gm)|
|Perihelion||0.926254 AU (138.5656 Gm)|
|1.010191 AU (151.1224 Gm)|
|1.02 yr (370.85 d)|
|0° 58m 14.632s /day|
|Jupiter MOID||3.98181 AU (595.670 Gm)|
Discovery, orbit and physical properties
2006 JY26 was discovered by E. J. Christensen on May 6, 2006 observing for the Catalina Sky Survey. Its orbit is characterized by low eccentricity (0.083), low inclination (1.44º) and a semi-major axis of 1.01 AU. Upon discovery, it was classified as an Apollo asteroid but also an Earth crosser by the Minor Planet Center. As of May 11, 2013 its orbit is based on 71 observations spanning a data-arc of 4 days. 2006 JY26 has an absolute magnitude (H) of 28.3 which gives a characteristic diameter of about 9 meters.
It is listed on the Sentry Risk Table with a 1 in 71 chance of impacting Earth on May 3, 2073. The nominal best-fit orbit shows that 2006 JY26 will be 0.01 AU (1,500,000 km; 930,000 mi) from Earth on May 3, 2074. An impact from this object would be less severe than the Chelyabinsk meteor.
Horseshoe companion to the Earth and orbital evolution
Recent calculations indicate that it follows a horseshoe orbit with respect to the Earth. It had a close encounter with the Earth on May 10, 2006 at 0.0029 AU (430,000 km; 270,000 mi). Its orbital evolution is very chaotic and its orbit is difficult to predict beyond a few hundred years. Its orbit matches the expected properties of that of an object in the Arjuna-class.
It may have been originated within the Venus-Earth-Mars region or in the main asteroid belt like other Near-Earth Objects, then transition to Amor-class asteroid before entering Earth's co-orbital region.
- ^ This is assuming an albedo of 0.20–0.04.
- List Of Aten Minor Planets
- "2006 JY26". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3332535. Retrieved 30 March 2016.
- AstDys-2 on 2006 JY26 Retrieved 2013-05-11
- NEODyS-2 on 2006 JY26 Retrieved 2013-05-11
- Absolute-magnitude conversion table (H)
- de la Fuente Marcos, C.; de la Fuente Marcos, R. (July 2013). "A resonant family of dynamically cold small bodies in the near-Earth asteroid belt". Monthly Notices of the Royal Astronomical Society: Letters. 434 (1): L1–L5. arXiv:. Bibcode:2013MNRAS.434L...1D. doi:10.1093/mnrasl/slt062.
- Discovery MPEC
- MPC data on 2006 JY26
- JPL's Solar System Dynamics data on 2006 JY26
- "Earth Impact Risk Summary: 2006 JY26". NASA/JPL Near-Earth Object Program Office. Retrieved 2015-01-26.
- "Impactor Table: 2006JY26". NEODyS-2. Retrieved 2014-04-16. (1 in 741)
- Further reading
- A resonant family of dynamically cold small bodies in the near-Earth asteroid belt de la Fuente Marcos, C., de la Fuente Marcos, R. 2013, Monthly Notices of the Royal Astronomical Society: Letters, Vol. 434, Issue 1, pp. L1–L5.
- 2006 JY26 data at MPC
- 2006 JY26 Earth Impact Risk Summary
- MPEC 2006-J38 : 2006 JY26 (Discovery MPEC)
- 2006 JY26 at the JPL Small-Body Database