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2006 JY26

2006 JY26
Discovery
Discovered byE. J. Christensen (Catalina Sky Survey)
Discovery dateMay 6, 2006
Designations
MPC designation2006 JY26
Apollo NEO, PHA[1][2]
Earth crosser
Orbital characteristics[2][3][4]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Aphelion1.094127 AU (163.6791 Gm)
Perihelion0.926254 AU (138.5656 Gm)
1.010191 AU (151.1224 Gm)
Eccentricity0.083090
1.02 yr (370.85 d)
114.637°
0° 58m 14.632s /day
Inclination1.43911°
43.4687°
273.635°
Jupiter MOID3.98181 AU (595.670 Gm)
Physical characteristics
Dimensions6–13 m[a][5]
28.4[2]

2006 JY26, also written 2006 JY26, is a horseshoe companion to the Earth like 3753 Cruithne.[6]

Discovery, orbit and physical properties

2006 JY26 was discovered by E. J. Christensen on May 6, 2006, observing for the Catalina Sky Survey.[7][8] Its orbit is characterized by low eccentricity (0.083), low inclination (1.44º) and a semi-major axis of 1.01 AU.[8] Upon discovery, it was classified as an Apollo asteroid but also an Earth crosser by the Minor Planet Center. The orbit is based on 76 observations spanning a data-arc of 4 days.[9] 2006 JY26 has an absolute magnitude (H) of 28.4 which gives a characteristic diameter of about 9 meters.[9]

Impact risk

It is listed on the Sentry Risk Table with a 1 in 140 chance of impacting Earth on May 3, 2074.[10][11] The nominal best-fit orbit shows that 2006 JY26 will be 0.006 AU (900,000 km; 560,000 mi) from Earth on May 3, 2074.[9] 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.[6] It had a close encounter with the Earth on May 10, 2006, at 0.0029 AU (430,000 km; 270,000 mi).[9] Its orbital evolution is very chaotic and its orbit is difficult to predict beyond a few hundred years.[6] Its orbit matches the expected properties of that of an object in the Arjuna-class.

Origin

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.[6]

See also

Notes

  • ^ This is assuming an albedo of 0.20–0.04.

References

  1. ^ List Of Aten Minor Planets
  2. ^ a b c "2006 JY26". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3332535. Retrieved 30 March 2016.
  3. ^ AstDys-2 on 2006 JY26 Retrieved 2013-05-11
  4. ^ NEODyS-2 on 2006 JY26 Retrieved 2013-05-11
  5. ^ Absolute-magnitude conversion table (H)
  6. ^ a b c d 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:1305.2825. Bibcode:2013MNRAS.434L...1D. doi:10.1093/mnrasl/slt062.
  7. ^ Discovery MPEC
  8. ^ a b MPC data on 2006 JY26
  9. ^ a b c d JPL's Solar System Dynamics data on 2006 JY26
  10. ^ "Earth Impact Risk Summary: 2006 JY26". NASA/JPL Near-Earth Object Program Office. Retrieved 22 January 2018.
  11. ^ "Impactor Table: 2006JY26". NEODyS-2. Retrieved 16 April 2014. (1 in 741)
Further reading

External links