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(145453) 2005 RR43

The correct title of this article is (145453) 2005 RR43. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
(145453) 2005 RR43
Discovery
Discovered by A. C. Becker,
A. W. Puckett,
J. Kubica
Discovery date September 9, 2005
Designations
MPC designation (145453) 2005 RR43
Alternative names none
Minor planet
category		 TNO
Aphelion 48.964 AU
Perihelion 37.183 AU
Semi-major axis 43.073 AU
Eccentricity 0.137
Mean anomaly 33.5°
Inclination 28.5°
Longitude of ascending node 85.8°
Argument of perihelion 278.4°
Physical characteristics
Dimensions 697 km
Albedo 0.09 (assumed)
Absolute magnitude 4.0

(145453) 2005 RR43, also written as (145453) 2005 RR43, is a trans-Neptunian object (TNO). It was discovered by Andrew C. Becker, Andrew W. Puckett, and Jeremy Martin Kubica on September 9, 2005 at Apache Point.

Classification

2005 RR43 is classified as a classical Kuiper belt object and follows an orbit similar to (136108) 2003 EL61.

Surface

The surface is covered by water ice as attested by deep absorption at 1.5 and 2 μm in the infrared spectrum and neutral (i.e. non-red) colour. Scattering models reveal that the observed water ice is, at least in a significant fraction, crystalline and organics, detected on the surface of many TNO, are completely absent.[1] These physical and orbit characteristics common with (136108) 2003 EL61 led to suggestion that 2005 RR43 is a member of the collisional family of 2003 EL61. The object, together with other members of the family ((19308) 1996 TO66, (24835) 1995 SM55, (55636) 2002 TX300, and (120178) 2003 OP32), would be created from ice mantle ejected from the proto-EL61 as result of a collision with another large (~1660 km) body.[2]

References

  1. ^ N. Pinilla-Alonso, J. Licandro, R. Gil-Hutton and R. Brunetto The water ice rich surface of (145453) 2005 RR43: a case for a carbon-depleted population of TNOs?, A&A 468, L25-L28 (2007)[1]
  2. ^ Michael E. Brown, Kristina M. Barkume, Darin Ragozzine & Emily L. Schaller, A collisional family of icy objects in the Kuiper belt, Nature, 446, (March 2007), pp 294-296.


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