(1143) Odysseus
Object
| Object |
(1143) Odysseus |
| Diameter(1) |
115 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
8.40 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2459800.5 |
| Semi major axis |
5.239278 ± 0.000000 au |
| Eccentricity |
0.091863018 ± 0.000000047 |
| Inclination |
3.140634492 ± 0.000005460 ° |
| Longitude of ascending node |
221.221264 ± 0.000087 ° |
| Argument of perihelia |
237.373471 ± 0.000092 ° |
| Mean anomaly |
314.694096 ± 0.000033 ° |
| Orbital period |
11.99 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv6 |
| Observation file (documentation) |
omc_ast_NIMAv6.txt |
| bsp file |
1143_Odysseus_nima_v6.bsp |
| Date of first observation |
1930-01-28 |
| Date of last observation |
2023-03-28 |
| Number of observations used in the fit |
4370 |
| Number of rejected observations |
36 |
| Number of DES observations |
0 |
| Number of MPC observations |
4355 |
| Number of unpublished observations |
51 |
| RMS of observations |
4.295 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2023-01 |
0.031 |
0.022 |
| 2023-07 |
0.029 |
0.017 |
| 2024-01 |
0.049 |
0.026 |
| 2024-07 |
0.035 |
0.018 |
| 2025-01 |
0.053 |
0.028 |
| 2025-07 |
0.038 |
0.019 |
| 2026-01 |
0.046 |
0.024 |
| 2026-07 |
0.039 |
0.020 |
| 2027-01 |
0.038 |
0.019 |
Ephemeris comparison
Difference between NIMAv6 and JPL99 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