(911) Agamemnon
Object
| Object |
(911) Agamemnon |
| Diameter(1) |
131 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
8.04 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2459800.5 |
| Semi major axis |
5.281169 ± 0.000000 au |
| Eccentricity |
0.067427752 ± 0.000000002 |
| Inclination |
21.762039006 ± 0.000000097 ° |
| Longitude of ascending node |
338.004801 ± 0.000000 ° |
| Argument of perihelia |
81.243774 ± 0.000003 ° |
| Mean anomaly |
5.934753 ± 0.000003 ° |
| Orbital period |
12.14 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv7 |
| Observation file (documentation) |
omc_ast_NIMAv7.txt |
| bsp file |
911_Agamemnon_nima_v7.bsp |
| Date of first observation |
1919-03-19 |
| Date of last observation |
2024-03-05 |
| Number of observations used in the fit |
4591 |
| Number of rejected observations |
22 |
| Number of DES observations |
0 |
| Number of MPC observations |
4031 |
| Number of unpublished observations |
77 |
| RMS of observations |
0.127 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) |
| 2023-01 |
0.002 |
0.000 |
| 2023-07 |
0.001 |
0.000 |
| 2024-01 |
0.002 |
0.001 |
| 2024-07 |
0.002 |
0.001 |
| 2025-01 |
0.003 |
0.002 |
| 2025-07 |
0.002 |
0.002 |
| 2026-01 |
0.003 |
0.003 |
| 2026-07 |
0.003 |
0.003 |
| 2027-01 |
0.003 |
0.003 |
Ephemeris comparison
Difference between NIMAv7 and JPL120 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