(1143) Odysseus
Object
| Object |
(1143) Odysseus |
| Diameter(1) |
115 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
8.46 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460800.5 |
| Semi major axis |
5.229115 ± 0.000000 au |
| Eccentricity |
0.090484498 ± 0.000000005 |
| Inclination |
3.142093864 ± 0.000000138 ° |
| Longitude of ascending node |
221.226422 ± 0.000003 ° |
| Argument of perihelia |
238.604742 ± 0.000004 ° |
| Mean anomaly |
35.975418 ± 0.000002 ° |
| Orbital period |
11.96 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv9 |
| Observation file (documentation) |
omc_ast_NIMAv9.txt |
| bsp file |
1143_Odysseus_nima_v9.bsp |
| Date of first observation |
1930-01-28 |
| Date of last observation |
2025-06-14 |
| Number of observations used in the fit |
7656 |
| Number of rejected observations |
58 |
| Number of DES observations |
0 |
| Number of MPC observations |
7147 |
| Number of unpublished observations |
55 |
| RMS of observations |
0.124 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv9 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2024-01 |
0.005 |
0.001 |
| 2024-07 |
0.003 |
0.001 |
| 2025-01 |
0.006 |
0.002 |
| 2025-07 |
0.004 |
0.001 |
| 2026-01 |
0.006 |
0.002 |
| 2026-07 |
0.005 |
0.002 |
| 2027-01 |
0.006 |
0.002 |
| 2027-07 |
0.006 |
0.002 |
| 2028-01 |
0.006 |
0.001 |
Ephemeris comparison
Difference between NIMAv9 and JPL112 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.
Previous NIMA versions