(148209) 2000 CR105

(148209) 2000 CR105
Discovery and designation
Discovered by Marc W. Buie
Discovery date February 6, 2000
Designations
none
E-SDO
(detached object)[1]
Orbital characteristics[1][2]
Epoch 2014-Dec-09 (JD 2457000.5)
Aphelion 416.0 ±1.4 AU (Q)
(60.33 Tm)
Perihelion 44.2346 ±0.0093 AU (q)
(6.586 Tm)
230.12 ±0.78 AU (a)
(33.46 Tm)
Eccentricity 0.80777 ±0.00067
3,491 ±18 yr (1,275,000 ±6400 d)
1.63 km/s
5.09°
Inclination 22.70702 ±0.000066 °
128.23435 ±0.00031 ° (Ω)
317.158 ±0.019° (ω)
Physical characteristics
Dimensions 328 km[3]
242 km[4]
0.04 (expected)[3]
Temperature ~19 K
Blue[3]
23.8[5]
6.3[2]

    (148209) 2000 CR105, also written as (148209) 2000 CR105, is about the seventh-most-distant known object in the Solar System.[6] Considered a detached object,[7][8] it orbits the Sun in a highly eccentric orbit every 3345 years at an average distance of 223 astronomical units (AU).[2]

    Mike Brown's website lists it as a possible dwarf planet with a diameter of 328 kilometres (204 mi) based on an assumed albedo of 0.04.[3] The albedo is expected to be low because the object has a blue (neutral) color.[3] However, if the albedo is higher, the object could easily be half that size.

    2000 CR105 and Sedna differ from scattered-disc objects in that they are not within the gravitational influence of the planet Neptune even at their perihelion distances (closest approaches to the Sun). It is something of a mystery as to how these objects came to be in their current, far-flung orbits. Several hypotheses have been put forward:

    2000 CR105 is the first object discovered in the Solar System to have a semi-major axis > 150 AU, a perihelion beyond Neptune, and an argument of perihelion of 340 ± 55°.[12]

    See also

    References

    1. ↑ 1.0 1.1 Marc W. Buie (2006-12-21). "Orbit Fit and Astrometric record for 148209". SwRI (Space Science Department). Retrieved 2008-07-18.
    2. ↑ 2.0 2.1 2.2 "JPL Small-Body Database Browser: 148209 (2000 CR105)". Retrieved 2008-02-20.
    3. ↑ 3.0 3.1 3.2 3.3 3.4 Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 2014-02-16.
    4. ↑ "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2014-04-05.
    5. ↑ "AstDys (148209) 2000CR105 Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 2009-04-18. Retrieved 2009-03-16.
    6. ↑ (Not counting long-period comets and space probes), Eris, Sedna, 2007 OR10, 2006 QH181, 2003 QX113, and 2004 XR190 are all further from the Sun.
    7. ↑ Jewitt, David, Morbidelli, Alessandro, & Rauer, Heike. (2007). Trans-Neptunian Objects and Comets: Saas-Fee Advanced Course 35. Swiss Society for Astrophysics and Astronomy. Berlin: Springer. ISBN 3-540-71957-1.
    8. ↑ Lykawka, Patryk Sofia & Mukai, Tadashi. (2007). Dynamical classification of trans-neptunian objects: Probing their origin, evolution, and interrelation. Icarus Volume 189, Issue 1, July , Pages 213–232. doi:10.1016/j.icarus.2007.01.001.
    9. ↑ 9.0 9.1 9.2 Kenyon, Scott J.; Benjamin C. Bromley (2004). "Stellar encounters as the origin of distant Solar System objects in highly eccentric orbits". Nature 432 (7017): 598–602. arXiv:astro-ph/0412030. Bibcode:2004Natur.432..598K. doi:10.1038/nature03136. PMID 15577903.
    10. ↑ Morbidelli, Alessandro; Harold F. Levison (2004). "Scenarios for the Origin of the Orbits of the Trans-Neptunian Objects 2000 CR105 and 2003 VB12 (Sedna)". The Astronomical Journal 128 (5): 2564–2576. arXiv:astro-ph/0403358. Bibcode:2004AJ....128.2564M. doi:10.1086/424617.
    11. ↑ 11.0 11.1 John J. Matese, Daniel P. Whitmire, and Jack J. Lissauer, "A Widebinary Solar Companion as a Possible Origin of Sedna-like Objects", Earth, Moon, and Planets, 97:459 (2005)
    12. ↑ "JPL Small-Body Database Search Engine: a > 150 (AU) and q > 30 (AU)". JPL Solar System Dynamics. Retrieved 2014-04-09.

    External links