(3793) Leonteus


Object

Object (3793) Leonteus
Diameter(1) 112 km
Dynamic class(1) trojan
Absolute magnitude 8.80
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2458600.5
Semi major axis 5.216833 ± 0.000000 au
Eccentricity 0.089036679 ± 0.000000076
Inclination 20.901622157 ± 0.000005771 °
Longitude of ascending node 200.512238 ± 0.000021 °
Argument of perihelia 262.688671 ± 0.000065 °
Mean anomaly 228.236762 ± 0.000071 °
Orbital period 11.92 yr

Ephemeris & Observations

Ephemeris version NIMAv3
Observation file (documentation) omc_ast_NIMAv3.txt
bsp file 3793_Leonteus_nima_v3.bsp
Date of first observation 1951-11-29
Date of last observation 2019-08-13
Number of observations used in the fit 2127
Number of rejected observations 5
Number of DES observations 0
Number of MPC observations 2132
Number of unpublished observations 0
RMS of observations 0.511 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2019-01 0.022 0.020
2019-07 0.032 0.026
2020-01 0.028 0.022
2020-07 0.039 0.026
2021-01 0.039 0.025
2021-07 0.048 0.024
2022-01 0.059 0.027
2022-07 0.057 0.021
2023-01 0.085 0.029

Ephemeris comparison

residual plot

Difference between NIMAv3 and JPL63 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