Английская Википедия:2013 AZ60

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Шаблон:Use dmy dates Шаблон:Infobox planet Шаблон:Mp is a small Solar System body (extended centaur) from the scattered disk or inner Oort cloud. Шаблон:Mp has the 8th-largest semi-major axis of a minor planet not detected outgassing like a comet (Шаблон:Mpl, Шаблон:Mpl and Шаблон:Mpl have a larger semi-major axis).

Шаблон:Mp came to perihelion in November 2014 at a distance of 7.9 AU from the Sun (inside of the orbit of Saturn). With an absolute magnitude (H) of 10.2, Шаблон:Mp has an estimated diameter of 40 km. Comet Hale–Bopp, which is roughly the same size, was not discovered until it was 7.2 AU from the Sun and had started outgassing CO. Шаблон:Mp may be discovered to be cometary as it comes to perihelion. It comes to opposition at the start of April.

After leaving the planetary region of the Solar System, Шаблон:Mp will have a barycentric aphelion of 827 AU with an orbital period of 8500 years. In a 10 million year integration of the orbit, one of the 3-sigma clones is ejected from the Solar System.

Orbital evolution
Epoch	Barycentric Aphelion (Q) (AU)	Orbital period yr
1950	1261	16000
2050	827	8500

Physical characteristics and orbit

A 2016 study found Шаблон:Mp to have a comet-like albedo of 2.9% (darker than any other known ejected centaur) and a color typical of D-type asteroids. It is unknown if it is a so-called "super comet" or an extinct comet, considering its large distance from the Sun. It was also determined that Шаблон:Mp has a diameter of Шаблон:Val kilometers, larger than initially believed. A light curve analysis found it to have a rotation period of Шаблон:Val hours, typical of asteroids its size. No significant satellites were detected.

It was also found that Шаблон:Mp is on an extremely unstable orbit, with a ~64% chance of being ejected from the Solar system in 1 million years, and a ~25% chance of being ejected in the next 500,000 years, as well as a 4.2% chance of its orbit venturing into the neighborhood of Earth.

Comparison

Файл:Distant object orbits + Planet Nine.png

The orbits of Шаблон:Dp, Шаблон:Mpl, Leleākūhonua, and other very distant objects along with the predicted orbit of Planet Nine. The three sednoids (pink) along with the red-colored extreme trans-Neptunian object (eTNO) orbits are suspected to be aligned with the hypothetical Planet Nine while the blue-colored eTNO orbits are anti-aligned. The highly elongated orbits colored brown include centaurs and damocloids with large aphelion distances over 200 AU.

See also

• 90377 Sedna (relatively large and also distant body)
• List of hyperbolic comets
• Pluto
• Шаблон:Mpl
• List of Solar System objects by greatest aphelion

Have very large aphelion

• Шаблон:Mpl (14–2049 AU)
• Шаблон:Mpl (4–2049 AU)
• Шаблон:Mpl (8–1920 AU)

External links

• 2013 AZ60 Шаблон:Webarchive (Seiichi Yoshida)
• JPL Webcite archive of Epoch 2016-Jan-13 with aphelion (Q) of 1450AU
• Шаблон:JPL small body