(145451) 2005 RM43

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(145451) 2005 RM43
Discovered by A. C. Becker,
A. W. Puckett,
J. Kubica
Discovery date September 9, 2005
MPC designation (145451) 2005 RM43
Minor planet category SDO[1]
Orbital characteristics[2]
Aphelion 145 AU
Perihelion 35.101 AU
89.817 AU
Eccentricity 0.609
867 yr
Inclination 28.8°
Physical characteristics
Dimensions 580 km (assumed)[3]
Albedo 0.09 (assumed)
Spectral type
(Neutral) B0-V0=0.590[4]

(145451) 2005 RM43, also written as (145451) 2005 RM43, is a trans-Neptunian object that resides in the scattered disc region beyond the Kuiper belt. It was discovered on September 9, 2005 by Andrew C. Becker, Andrew W. Puckett and Jeremy Martin Kubica at Apache Point Observatory in Sunspot, New Mexico.

Mike Brown's website lists it as a likely dwarf planet, but the diameter of the object has never been measured.[5]

It has been observed 194 times over eleven oppositions, with precovery images back to 1976.[2] The orbit is well determined with a "quality code" of 0.[2]


  1. ^ "MPEC 2009-P26 :Distant Minor Planets (2009 AUG. 17.0 TT)". IAU Minor Planet Center. 2009-08-07. Retrieved 2009-08-28. 
  2. ^ a b c d "JPL Small-Body Database Browser: 145451 (2005 RM43)" (2006-11-30 last obs). Retrieved 2009-08-28. 
  3. ^ Wm. Robert Johnston. "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 24 June 2009. Retrieved 2009-08-28. 
  4. ^ David L. Rabinowitz, Bradley E. Schaefer, Martha W. Schaefer, Suzanne W. Tourtellotte (2008). "The Youthful Appearance of the 2003 EL61 Collisional Family". arXiv:0804.2864.
  5. ^ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 2012-01-19. 

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