2006 JY26

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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 April 18, 2013 (JD 2456400.5)
Aphelion 1.093755AU
Perihelion 0.925972 AU
1.009863 AU
Eccentricity 0.083072
1.0 y (370.674 d)
223.70°
Inclination 1.43932°
43.487°
273.571°
Physical characteristics
Dimensions 6-13 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[edit]

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[edit]

It is listed on the Sentry Risk Table with a 1 in 120 chance of impacting Earth on May 3, 2074.[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[edit]

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[edit]

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[edit]

Notes[edit]

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

References[edit]

Further reading

External links[edit]