(145453) 2005 RR43
, also written as (145453) 2005 RR43, is a trans-Neptunian object (TNO) estimated to be about 250 km in diameter. It was discovered on 9 September 2005 by Andrew Becker, Andrew Puckett and Jeremy Kubica at Apache Point Observatory in Sunspot, New Mexico. Origin 

Based on their common pattern of IR water-ice absorptions, neutral visible spectrum, and the clustering of their orbital elements, the other KBOs , ,  and  appear to be collisional fragments broken off the dwarf planet . 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 TNOs, are completely absent. These physical and orbital characteristics common with Haumea led to suggestion that  is a member of the Haumea collisional family. The object, together with other members of the family (, ,  and ), would be created from ice mantle ejected from the proto-Haumea as result of a collision with another large (around ) body. See also

References

External links 
 List of TNOs, Minor Planet Center
 (145453) 2005 RR43 Precovery Images
 

Haumea family
Classical Kuiper belt objects
2005 RR43
2005 RR43
2005 RR43
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