The surface is covered by water ice as attested by deep absorption at 1.5 and 2 μm in the infraredspectrum 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. These physical and orbital characteristics common with Haumea led to suggestion that 2005 RR43 is a member of the Haumea collisional family. 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-Haumea as result of a collision with another large (~1660 km) body.
Neutral (non-red) Color Index
The + marks 2005 RR43 (B-V=0.77, V-R=0.41) on this color plot of TNOs. All the other Haumea-family members are located to the lower left of this point.