(1873) Agenor
Object
| Object |
(1873) Agenor |
| Diameter(1) |
53 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
10.26 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460800.5 |
| Semi major axis |
5.221933 ± 0.000000 au |
| Eccentricity |
0.091494210 ± 0.000000024 |
| Inclination |
21.898974353 ± 0.000000456 ° |
| Longitude of ascending node |
197.890069 ± 0.000002 ° |
| Argument of perihelia |
357.398814 ± 0.000010 ° |
| Mean anomaly |
174.980017 ± 0.000009 ° |
| Orbital period |
11.93 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv4 |
| Observation file (documentation) |
omc_ast_NIMAv4.txt |
| bsp file |
1873_Agenor_nima_v4.bsp |
| Date of first observation |
1971-03-25 |
| Date of last observation |
2025-07-12 |
| Number of observations used in the fit |
4193 |
| Number of rejected observations |
11 |
| Number of DES observations |
0 |
| Number of MPC observations |
3891 |
| Number of unpublished observations |
0 |
| RMS of observations |
0.114 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) |
| 2024-01 |
0.020 |
0.003 |
| 2024-07 |
0.023 |
0.003 |
| 2025-01 |
0.021 |
0.003 |
| 2025-07 |
0.022 |
0.003 |
| 2026-01 |
0.023 |
0.002 |
| 2026-07 |
0.022 |
0.002 |
| 2027-01 |
0.027 |
0.003 |
| 2027-07 |
0.023 |
0.002 |
| 2028-01 |
0.031 |
0.004 |
Ephemeris comparison
Difference between NIMAv4 and JPL65 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