(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 8.37
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2459200.5
Semi major axis 189.703386 ± 0.030730 au
Eccentricity 0.953935397 ± 0.000007297
Inclination 125.350114646 ± 0.000008893 °
Longitude of ascending node 275.974892 ± 0.000037 °
Argument of perihelia 152.960957 ± 0.000347 °
Mean anomaly 359.516668 ± 0.000119 °
Orbital period 2612.89 yr

Ephemeris & Observations

Ephemeris version NIMAv4
Observation file (documentation) omc_ast_NIMAv4.txt
bsp file 468861_2013LU28_nima_v4.bsp
Date of first observation 2013-06-08
Date of last observation 2022-02-02
Number of observations used in the fit 797
Number of rejected observations 13
Number of DES observations 0
Number of MPC observations 599
Number of unpublished observations 211
RMS of observations 0.284 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv4 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2021-01 0.036 0.045
2021-07 0.082 0.035
2022-01 0.069 0.051
2022-07 0.188 0.067
2023-01 0.214 0.076
2023-07 0.331 0.203
2024-01 0.443 0.274
2024-07 0.465 0.448
2025-01 0.648 0.679

Ephemeris comparison

residual plot

Difference between NIMAv4 and JPL16 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.