(145451) 2005 RM43
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(145451) 2005 RM43 (provisional designation 2005 RM43) is a trans-Neptunian object that resides in the scattered disc region beyond the Kuiper belt. It was discovered on 9 September 2005, by American astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica at Apache Point Observatory in Sunspot, New Mexico. It measures between approximately 500 and 650 kilometers in diameter.[2][8]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by | A. C. Becker A. W. Puckett J. M. Kubica |
Discovery site | Apache Point Obs. |
Discovery date | 9 September 2005 |
Designations | |
(145451) 2005 RM43 | |
SDO[2] | |
Orbital characteristics[1] | |
Epoch 27 April 2019 (JD 2458600.5) | |
Uncertainty parameter 2 | |
Observation arc | 14983 days (41.02 yr) |
Earliest precovery date | 17 November 1976 |
Aphelion | 144.140 AU (21.5630 Tm) |
Perihelion | 35.079 AU (5.2477 Tm) |
89.610 AU (13.4055 Tm) | |
Eccentricity | 0.60854 |
848.28 yr (309834 d) | |
6.19° | |
0° 0m 4.183s / day | |
Inclination | 28.819° |
84.61° | |
318.10° | |
Physical characteristics | |
Mean diameter | ≈644 km (derived from occultation; 455 and 460 km measured)[3] 524+96 −103 km[4] 458 km (lower limit)[5] |
Mean density | >0.56 g/cm3[2] |
6.71 h (0.280 d) | |
0.102[4] | |
V–R=0.33±0.02 (neutral)[4] B0−V0=0.590[6] B-R=0.99[2] | |
20.4[7] | |
4.52±0.01[4] 4.4[1] · 4.8[8] | |
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