(143707) 2003UY117


Object

Object (143707) 2003UY117
Diameter(1) 321 km
Dynamic class(1) res2:5
Absolute magnitude 6.01
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2459800.5
Semi major axis 56.126621 ± 0.002733 au
Eccentricity 0.421762867 ± 0.000024415
Inclination 7.537339957 ± 0.000027180 °
Longitude of ascending node 265.182185 ± 0.000135 °
Argument of perihelia 112.462308 ± 0.001033 °
Mean anomaly 15.250109 ± 0.001461 °
Orbital period 420.50 yr

Ephemeris & Observations

Ephemeris version NIMAv5
Observation file (documentation) omc_ast_NIMAv5.txt
bsp file 143707_2003UY117_nima_v5.bsp
Date of first observation 2001-07-26
Date of last observation 2021-11-28
Number of observations used in the fit 412
Number of rejected observations 8
Number of DES observations 6
Number of MPC observations 370
Number of unpublished observations 44
RMS of observations 0.154 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv5 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2022-01 0.039 0.016
2022-07 0.028 0.013
2023-01 0.040 0.018
2023-07 0.040 0.016
2024-01 0.044 0.020
2024-07 0.054 0.019
2025-01 0.052 0.023
2025-07 0.071 0.023
2026-01 0.063 0.026

Ephemeris comparison

residual plot

Difference between NIMAv5 and JPL8 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