(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 | 10.94 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 5.307755 ± 0.000000 au |
| Eccentricity | 0.065793133 ± 0.000000039 |
| Inclination | 11.544111161 ± 0.000001343 ° |
| Longitude of ascending node | 251.073007 ± 0.000014 ° |
| Argument of perihelia | 161.917293 ± 0.000029 ° |
| Mean anomaly | 91.282622 ± 0.000022 ° |
| Orbital period | 12.23 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv6 |
| Observation file |
omc_ast_NIMAv6.txt |
| bsp file | 11351_Leucus_nima_v6.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2024-05-26 |
| Number of observations used in the fit | 3011 |
| Number of rejected observations | 6 |
| Number of DES observations | 0 |
| Number of MPC observations | 3012 |
| Number of unpublished observations | 5 |
| RMS of observations | 0.339 arcsec |
Residuals
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 | 0.040 | 0.017 |
| 2024-07 | 0.030 | 0.012 |
| 2025-01 | 0.039 | 0.016 |
| 2025-07 | 0.033 | 0.014 |
| 2026-01 | 0.036 | 0.013 |
| 2026-07 | 0.036 | 0.014 |
| 2027-01 | 0.033 | 0.010 |
| 2027-07 | 0.038 | 0.013 |
| 2028-01 | 0.030 | 0.009 |
Ephemeris comparison
Difference between NIMAv6 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.