(1143) Odysseus
This object has a more recent orbit available here
Object
| Object | (1143) Odysseus |
| Diameter(1) | 115 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 8.47 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 5.230490 ± 0.000000 au |
| Eccentricity | 0.090847076 ± 0.000000044 |
| Inclination | 3.142100174 ± 0.000005103 ° |
| Longitude of ascending node | 221.230614 ± 0.000081 ° |
| Argument of perihelia | 238.494120 ± 0.000086 ° |
| Mean anomaly | 19.563840 ± 0.000029 ° |
| Orbital period | 11.96 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv7 |
| Observation file |
omc_ast_NIMAv7.txt |
| bsp file | 1143_Odysseus_nima_v7.bsp |
| Date of first observation | 1930-01-28 |
| Date of last observation | 2024-05-08 |
| Number of observations used in the fit | 6258 |
| Number of rejected observations | 58 |
| Number of DES observations | 0 |
| Number of MPC observations | 6265 |
| Number of unpublished observations | 51 |
| RMS of observations | 3.604 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv7 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.038 | 0.024 |
| 2024-07 | 0.027 | 0.016 |
| 2025-01 | 0.042 | 0.025 |
| 2025-07 | 0.031 | 0.017 |
| 2026-01 | 0.039 | 0.022 |
| 2026-07 | 0.034 | 0.019 |
| 2027-01 | 0.035 | 0.018 |
| 2027-07 | 0.037 | 0.020 |
| 2028-01 | 0.031 | 0.016 |
Ephemeris comparison
Difference between NIMAv7 and JPL106 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.