| Minorplanet | yes |
|---|---|
| Background |
|
| Discoverer | Mt. Lemmon Survey |
| Discovered | 10 January 2013 |
| Mp category | |
| Epoch | 4 September 2017 (JD 2458000.5) |
| Uncertainty | 1 |
| Observation arc | 5.20 yr |
| Semimajor | 562 AU (a) |
| Perihelion | 7.920 AU (q) |
| Aphelion | 1,116.9 AU (Q) |
| Eccentricity | 0.98592 (e) |
| Inclination | 16.532° (i) |
| Asc node | 349.20° (Ω) |
| Arg peri | 158.42° (ω) |
| Period | 13339 yr |
| Mean anomaly | 0.07458° (M) |
| Jupiter moid | 2.58 AU (386 Gm) |
| Saturn moid | 1.20 AU (180 Gm)[2] |
| Mean motion | 0.000050074°/day (n) |
| Satellites | 0 |
| Dimensions | |
| Abs magnitude | 10.2[2][5] |
| Magnitude | 19.8 |
| Sidereal day | 9.39 ± 0.22 h[4] |
| Albedo | 0.029[4] |
' is a small Solar System body (extended centaur)[2] from the scattered disk or inner Oort cloud. has the 8th-largest semi-major axis of a minor planet not detected outgassing like a comet[6] (, and have a larger semi-major axis).
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,[2] has an estimated diameter of 40 km.[3] 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. may be discovered to be cometary as it comes to perihelion. It comes to opposition at the start of April.[timeframe?]
After leaving the planetary region of the Solar System, 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.[1]
| Orbital evolution | |||||||
| Epoch | Barycentric Aphelion (Q) (AU) | Orbital period yr | |||||
|---|---|---|---|---|---|---|---|
| 1950 | 1261 | 16000 | |||||
| 2050 | 827 | 8500 | |||||
Physical characteristics and orbit
A 2016 study found 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 has a diameter of 62.3 ± 5.3 kilometers, larger than initially believed. A light curve analysis found it to have a rotation period of 9.39 ± 0.22 hours, typical of asteroids its size. No significant satellites were detected.
It was also found that 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.[4]
See also
- 90377 Sedna (relatively large and also distant body)
- List of hyperbolic comets
- Pluto
- List of Solar System objects by greatest aphelion
- Have very large aphelion
- (14–2049 AU)
- (4–2049 AU)
- (8–1920 AU)
References
- ^ Marc W. Buie. "Orbit Fit and Astrometric record for 13AZ60". SwRI – Space Science Department. Archived 2016-03-27 at the Wayback Machine. Retrieved 2017-02-15.
- ^ "2013 AZ60 Orbit". IAU minor planet center. Archived 2016-02-15 at the Wayback Machine. Retrieved 2018-02-03.
- ^ "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 2001-03-02. Retrieved 2013-10-13.
- ^ Pál, Andras (2016-07-20). "Physical properties of the extreme centaur and super-comet candidate 2013 AZ60". Astronomy & Astrophysics. 583: A93. arXiv:1507.05468. doi:10.1051/0004-6361/201526249. S2CID 117686497
- ^ "JPL Small-Body Database Browser: (2013 AZ60)" (last observation: 2016-01-08; arc: 2.99 yr). Jet Propulsion Laboratory. Archived 12 February 2017 at the Wayback Machine. Retrieved 25 March 2016.
- ^ "JPL Small-Body Database Search Engine: Asteroids and a > 100 (AU)". JPL Solar System Dynamics. Retrieved 2013-10-13.
External links
- 2013 AZ60 Archived 22 October 2013 at the Wayback Machine (Seiichi Yoshida)
- JPL Webcite archive of Epoch 2016-Jan-13 with aphelion (Q) of 1450AU