(3793) Leonteus


Object

Object (3793) Leonteus
Diameter(1) 112 km
Dynamic class(1) trojan
Absolute magnitude 8.87
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2460600.5
Semi major axis 5.225462 ± 0.000000 au
Eccentricity 0.090978971 ± 0.000000052
Inclination 20.894651931 ± 0.000005457 °
Longitude of ascending node 200.519919 ± 0.000014 °
Argument of perihelia 262.912845 ± 0.000033 °
Mean anomaly 33.517007 ± 0.000030 °
Orbital period 11.95 yr

Ephemeris & Observations

Ephemeris version NIMAv6
Observation file (documentation) omc_ast_NIMAv6.txt
bsp file 3793_Leonteus_nima_v6.bsp
Date of first observation 1951-11-29
Date of last observation 2024-06-02
Number of observations used in the fit 4748
Number of rejected observations 24
Number of DES observations 0
Number of MPC observations 4772
Number of unpublished observations 0
RMS of observations 0.359 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2024-01 0.041 0.025
2024-07 0.031 0.017
2025-01 0.044 0.022
2025-07 0.037 0.018
2026-01 0.041 0.019
2026-07 0.041 0.018
2027-01 0.037 0.016
2027-07 0.044 0.019
2028-01 0.034 0.016

Ephemeris comparison

residual plot

Difference between NIMAv6 and JPL102 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