(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 | 10.80 |
| 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 | 0.063773278 ± 0.000000037 |
| Inclination | 11.555302462 ± 0.000004715 ° |
| Longitude of ascending node | 251.074058 ± 0.000014 ° |
| Argument of perihelia | 160.476508 ± 0.000084 ° |
| Mean anomaly | 290.918764 ± 0.000079 ° |
| Orbital period | 12.16 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv2 |
| Observation file |
omc_ast_NIMAv2.txt |
| bsp file | 11351_Leucus_nima_v2.bsp |
| Date of first observation | 1982-07-25 |
| Date of last observation | 2019-08-11 |
| Number of observations used in the fit | 1318 |
| Number of rejected observations | 4 |
| Number of DES observations | 0 |
| Number of MPC observations | 1124 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.104 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv2 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2019-01 | 0.019 | 0.009 |
| 2019-07 | 0.038 | 0.017 |
| 2020-01 | 0.036 | 0.015 |
| 2020-07 | 0.053 | 0.015 |
| 2021-01 | 0.059 | 0.017 |
| 2021-07 | 0.063 | 0.004 |
| 2022-01 | 0.085 | 0.004 |
| 2022-07 | 0.064 | 0.010 |
| 2023-01 | 0.093 | 0.022 |
Ephemeris comparison
Difference between NIMAv2 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.