(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 | 7.93 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458600.5 |
| Semi major axis | 5.248071 ± 0.000000 au |
| Eccentricity | 0.089745428 ± 0.000000058 |
| Inclination | 3.137161204 ± 0.000005795 ° |
| Longitude of ascending node | 221.269640 ± 0.000103 ° |
| Argument of perihelia | 236.416430 ± 0.000082 ° |
| Mean anomaly | 216.858275 ± 0.000061 ° |
| Orbital period | 12.02 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 1143_Odysseus_nima_v3.bsp |
| Date of first observation | 1930-01-28 |
| Date of last observation | 2020-09-01 |
| Number of observations used in the fit | 2753 |
| Number of rejected observations | 48 |
| Number of DES observations | 0 |
| Number of MPC observations | 2750 |
| Number of unpublished observations | 51 |
| RMS of observations | 0.603 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2020-01 | 0.021 | 0.019 |
| 2020-07 | 0.027 | 0.022 |
| 2021-01 | 0.023 | 0.019 |
| 2021-07 | 0.029 | 0.021 |
| 2022-01 | 0.031 | 0.022 |
| 2022-07 | 0.035 | 0.020 |
| 2023-01 | 0.049 | 0.027 |
| 2023-07 | 0.043 | 0.019 |
| 2024-01 | 0.068 | 0.029 |
Ephemeris comparison
Difference between NIMAv3 and JPL67 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.