2006 JY26

2006 JY₂₆

Discovery
Discovered by	E. J. Christensen (Catalina Sky Survey)
Discovery date	May 6, 2006
Designations
MPC designation	2006 JY26
Minor planet category	Apollo NEO, PHA[1][2] Earth crosser
Orbital characteristics[2][3][4]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Aphelion	1.094127 AU (163.6791 Gm)
Perihelion	0.926254 AU (138.5656 Gm)
Semi-major axis	1.010191 AU (151.1224 Gm)
Eccentricity	0.083090
Orbital period	1.02 yr (370.85 d)
Mean anomaly	114.637°
Mean motion	0° 58^m 14.632^s /day
Inclination	1.43911°
Longitude of ascending node	43.4687°
Argument of perihelion	273.635°
Jupiter MOID	3.98181 AU (595.670 Gm)
Physical characteristics
Dimensions	6–13 m^[a][5]
Absolute magnitude (H)	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. As of May 11, 2013 its orbit is based on 71 observations spanning a data-arc of 4 days.^[9] 2006 JY₂₆ has an absolute magnitude (H) of 28.3 which gives a characteristic diameter of about 9 meters.^[9]

Impact risk

It is listed on the Sentry Risk Table with a 1 in 71 chance of impacting Earth on May 3, 2073.^[10][11] 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.^[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

• 3753 Cruithne (1986 TO)
• 2001 GO2
• 2002 AA29
• 2003 YN107
• 2009 SH2
• 2010 SO16
• 2012 FC71
• 2013 BS45

Notes

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

References

1. List Of Aten Minor Planets
2. "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. 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. MPC data on 2006 JY26
9. JPL's Solar System Dynamics data on 2006 JY26
10. "Earth Impact Risk Summary: 2006 JY26". NASA/JPL Near-Earth Object Program Office. Retrieved 2015-01-26.
11. "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.

External links

• 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
  
  • Discovery · Orbit diagram · Orbital elements · Physical parameters