(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 | 8.40 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2456202.783026109 |
| Semi major axis | 5.250016 ± 0.000001 au |
| Eccentricity | 0.091362581 ± 0.000000066 |
| Inclination | 3.137790430 ± 0.000005853 ° |
| Longitude of ascending node | 221.295793 ± 0.000101 ° |
| Argument of perihelia | 236.610741 ± 0.000148 ° |
| Mean anomaly | 19.784880 ± 0.000053 ° |
| Orbital period | 12.03 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv4 |
| Observation file |
omc_ast_NIMAv4.txt |
| bsp file | 1143_Odysseus_nima_v4.bsp |
| Date of first observation | 1930-01-28 |
| Date of last observation | 2020-11-07 |
| Number of observations used in the fit | 3055 |
| Number of rejected observations | 28 |
| Number of DES observations | 0 |
| Number of MPC observations | 3032 |
| Number of unpublished observations | 51 |
| RMS of observations | 5.137 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv4 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2021-01 | 0.021 | 0.017 |
| 2021-07 | 0.027 | 0.019 |
| 2022-01 | 0.029 | 0.021 |
| 2022-07 | 0.034 | 0.019 |
| 2023-01 | 0.047 | 0.027 |
| 2023-07 | 0.042 | 0.019 |
| 2024-01 | 0.067 | 0.029 |
| 2024-07 | 0.046 | 0.019 |
| 2025-01 | 0.067 | 0.031 |
Ephemeris comparison
Difference between NIMAv4 and JPL84 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.