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2010 BK₁₁₈ (also written 2010 BK118) is a centaur roughly 20–60 km in diameter. It is on a retrograde cometary orbit. It has a barycentric semi-major axis (average distance from the Sun) of ~400 AU.

2010 BK₁₁₈ came to perihelion in April 2012 at a distance of 6.1 AU from the Sun (outside the orbit of Jupiter). It has a Jupiter-MOID of 1.1 AU. As of 2016, it is 11 AU from the Sun.

It will not be 50 AU from the Sun until 2043. After leaving the planetary region of the Solar System, 2010 BK₁₁₈ will have a barycentric aphelion of 791 AU with an orbital period of 8000 years.

Notes

1. ^ Given the orbital eccentricity of this object, different epochs can generate quite different heliocentric unperturbed two-body best-fit solutions to the semi-major axis and orbital period. For objects at such high eccentricity, the Sun's barycentric coordinates are more stable than heliocentric coordinates. Using JPL Horizons, the barycentric semi-major axis is approximately 399 AU.

References

1. ^ Carl Hergenrother. "Recent Discoveries – Sept 17-24, 2010". The Transient Sky. Retrieved 4 February 2016.
2. "MPEC 2010-S36 : 2010 BK118". IAU Minor Planet Center. 22 September 2010. Retrieved 4 February 2016. (K10BB8K)
3. Marc W. Buie. "Orbit Fit and Astrometric record for 10BK118". SwRI (Space Science Department). Retrieved 4 February 2016.
4. ^ "JPL Small-Body Database Browser: (2010 BK118)" (last observation: 2013-09-10; arc: 3.61 yr). Jet Propulsion Laboratory. Retrieved 25 March 2016.
5. "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 2 March 2001. Retrieved 4 February 2016.
6. ^ "AstDyS 2010BK118 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 4 February 2016.
7. Horizons output. "Barycentric Osculating Orbital Elements for 2010 BK118". Retrieved 4 February 2016. (Solution using the Solar System Barycenter and barycentric coordinates. Select Ephemeris Type:Elements and Center:@0)

External links

• 2010 BK118 at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 2010 BK118 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Scattered disc and detached objects
• Centaurs (small Solar System bodies)
• Trans-Neptunian objects
• Inner Oort cloud
• Minor planet object articles (unnumbered)
• Astronomical objects discovered in 2010
• Minor planets with a retrograde orbit