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2006 JY26

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2006 JY26
Discovery
Discovered byE. J. Christensen (Catalina Sky Survey)
Discovery date6 May 2006
Designations
2006 JY26
Orbital characteristics[1][2][3]
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][4]
28.4[1]

2006 JY26 is a near-Earth object that is also horseshoe companion to the Earth like 3753 Cruithne.[5]

Discovery, orbit and physical properties

2006 JY26 was discovered by E. J. Christensen on 6 May 2006, observing for the Catalina Sky Survey.[6][7] Its orbit is characterized by low eccentricity (0.083), low inclination (1.44º) and a semi-major axis of 1.01 AU.[7] 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.[8] 2006 JY26 has an absolute magnitude (H) of 28.4 which gives a characteristic diameter of about 9 meters.[8]

Impact risk

Virtual impactors[9]
Date Impact
probability
(1 in) 		JPL Horizons
nominal geocentric
distance (AU) 		uncertainty
region
(3-sigma)
2073-05-03 09:36 330 thousand 0.025 AU (3.7 million km) ±2.4 million km
2074-05-03 00:43 210 0.0099 AU (1.48 million km) ±2.8 million km[10]
2075-05-01 10:34 2.4 million 0.14 AU (21 million km) ±23 million km

It is listed on the Sentry Risk Table with a 1 in 210 chance of impacting Earth on 3 May 2074.[9][11] The nominal best-fit orbit shows that 2006 JY26 will be 0.0099 AU (1,480,000 km; 920,000 mi) from Earth on 3 May 2074.[8] 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.[5] It had a close encounter with the Earth on 10 May 2006, at 0.0029 AU (430,000 km; 270,000 mi).[8] Its orbital evolution is very chaotic and its orbit is difficult to predict beyond a few hundred years.[5] 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.[5]

See also

Notes

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

References

  1. ^ a b c "2006 JY26". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3332535. Retrieved 30 March 2016.
  2. ^ AstDys-2 on 2006 JY26 Retrieved 2013-05-11
  3. ^ NEODyS-2 on 2006 JY26 Retrieved 2013-05-11
  4. ^ Absolute-magnitude conversion table (H)
  5. ^ 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.
  6. ^ Discovery MPEC
  7. ^ a b MPC data on 2006 JY26
  8. ^ a b c d JPL's Solar System Dynamics data on 2006 JY26
  9. ^ a b "Earth Impact Risk Summary: 2006 JY26". NASA/JPL Near-Earth Object Program Office. Retrieved 22 January 2018.
  10. ^ "Horizons Batch for 2074-May-03 Virtual Impactor". JPL Horizons. Archived from the original on 5 July 2022. Retrieved 5 July 2022. RNG_3sigma = uncertainty range in km. (JPL#10/Soln.date: 2021-Apr-14 generates RNG_3sigma = 2825568 km for 2074-May-03.)
  11. ^ "Impactor Table: 2006JY26". NEODyS-2. Retrieved 16 April 2014. (1 in 741)
Further reading
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