(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 | 10.70 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458600.5 |
| Semi major axis | 5.289245 ± 0.000000 au |
| Eccentricity | 0.063773129 ± 0.000000069 |
| Inclination | 11.555276276 ± 0.000006215 ° |
| Longitude of ascending node | 251.074046 ± 0.000032 ° |
| Argument of perihelia | 160.476422 ± 0.000092 ° |
| Mean anomaly | 290.918872 ± 0.000103 ° |
| Orbital period | 12.16 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv1 |
| Observation file |
omc_ast_NIMAv1.txt |
| bsp file | 11351_Leucus_nima_v1.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2019-01-05 |
| Number of observations used in the fit | 1048 |
| Number of rejected observations | 12 |
| Number of DES observations | 0 |
| Number of MPC observations | 1060 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.454 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv1 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2018-01 | 0.017 | 0.016 |
| 2018-07 | 0.025 | 0.022 |
| 2019-01 | 0.021 | 0.017 |
| 2019-07 | 0.035 | 0.024 |
| 2020-01 | 0.032 | 0.022 |
| 2020-07 | 0.046 | 0.025 |
| 2021-01 | 0.051 | 0.028 |
| 2021-07 | 0.054 | 0.022 |
| 2022-01 | 0.073 | 0.028 |
Ephemeris comparison
Difference between NIMAv1 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.