(11351) Leucus
This object has a more recent orbit available here
Object
| Object | (11351) Leucus |
| Diameter(1) | 34 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 10.89 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2457311.149145183 |
| Semi major axis | 5.281898 ± 0.000000 au |
| Eccentricity | 0.063976366 ± 0.000000051 |
| Inclination | 11.561762447 ± 0.000001347 ° |
| Longitude of ascending node | 251.089004 ± 0.000014 ° |
| Argument of perihelia | 161.504357 ± 0.000031 ° |
| Mean anomaly | 185.225641 ± 0.000026 ° |
| Orbital period | 12.14 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv4 |
| Observation file |
omc_ast_NIMAv4.txt |
| bsp file | 11351_Leucus_nima_v4.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2022-04-19 |
| Number of observations used in the fit | 2353 |
| Number of rejected observations | 6 |
| Number of DES observations | 0 |
| Number of MPC observations | 2354 |
| Number of unpublished observations | 5 |
| RMS of observations | 0.355 arcsec |
Residuals
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) |
| 2022-01 | 0.030 | 0.012 |
| 2022-07 | 0.029 | 0.009 |
| 2023-01 | 0.048 | 0.016 |
| 2023-07 | 0.036 | 0.012 |
| 2024-01 | 0.055 | 0.022 |
| 2024-07 | 0.041 | 0.016 |
| 2025-01 | 0.053 | 0.021 |
| 2025-07 | 0.044 | 0.018 |
| 2026-01 | 0.048 | 0.016 |
Ephemeris comparison
Difference between NIMAv4 and JPL25 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.