(468861) 2013LU28


This object has a more recent orbit available here

Object

Object (468861) 2013LU28
Diameter(1) 106 km
Dynamic class(1) Centaur?
Absolute magnitude 8.30
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2459000.5
Semi major axis 187.042319 ± 0.035172 au
Eccentricity 0.953295337 ± 0.000008601
Inclination 125.350447406 ± 0.000016243 °
Longitude of ascending node 275.966511 ± 0.000061 °
Argument of perihelia 153.000803 ± 0.000451 °
Mean anomaly 359.428905 ± 0.000163 °
Orbital period 2558.10 yr

Ephemeris & Observations

Ephemeris version NIMAv2
Observation file (documentation) omc_ast_NIMAv2.txt
bsp file 468861_2013LU28_nima_v2.bsp
Date of first observation 2013-06-08
Date of last observation 2021-01-19
Number of observations used in the fit 450
Number of rejected observations 4
Number of DES observations 0
Number of MPC observations 399
Number of unpublished observations 55
RMS of observations 0.304 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv2 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2020-01 0.065 0.072
2020-07 0.072 0.044
2021-01 0.065 0.062
2021-07 0.205 0.070
2022-01 0.192 0.097
2022-07 0.467 0.104
2023-01 0.554 0.113
2023-07 0.770 0.415
2024-01 1.027 0.573

Ephemeris comparison

residual plot

Difference between NIMAv2 and JPL14 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.