(145451) 2005RM43


Object

Object (145451) 2005RM43
Diameter(1) 524 km
Dynamic class(1) SDO
Absolute magnitude 4.60
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2460600.5
Semi major axis 92.485964 ± 0.003589 au
Eccentricity 0.620151090 ± 0.000013690
Inclination 28.699555827 ± 0.000029674 °
Longitude of ascending node 84.629392 ± 0.000014 °
Argument of perihelia 318.589706 ± 0.000372 °
Mean anomaly 8.006435 ± 0.000494 °
Orbital period 889.45 yr

Ephemeris & Observations

Ephemeris version NIMAv12
Observation file (documentation) omc_ast_NIMAv12.txt
bsp file 145451_2005RM43_nima_v12.bsp
Date of first observation 1976-11-17
Date of last observation 2024-03-29
Number of observations used in the fit 527
Number of rejected observations 3
Number of DES observations 0
Number of MPC observations 485
Number of unpublished observations 45
RMS of observations 0.195 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv12 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2024-01 0.052 0.035
2024-07 0.064 0.037
2025-01 0.066 0.043
2025-07 0.077 0.044
2026-01 0.080 0.050
2026-07 0.091 0.051
2027-01 0.096 0.058
2027-07 0.106 0.058
2028-01 0.112 0.066

Ephemeris comparison

residual plot

Difference between NIMAv12 and JPL25 in right ascension (weighted by cos δ) and in declination.
Gray area represents the 1-σ uncertainty of NIMA ephemeris. Green dots represent the DES observations.

Previous NIMA versions