(1873) Agenor
This object has a more recent orbit available here
Object
| Object | (1873) Agenor |
| Diameter(1) | 53 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 10.27 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460000.5 |
| Semi major axis | 5.226962 ± 0.000000 au |
| Eccentricity | 0.091058756 ± 0.000000025 |
| Inclination | 21.883340797 ± 0.000000457 ° |
| Longitude of ascending node | 197.914638 ± 0.000002 ° |
| Argument of perihelia | 357.962725 ± 0.000011 ° |
| Mean anomaly | 108.293113 ± 0.000010 ° |
| Orbital period | 11.95 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv2 |
| Observation file |
omc_ast_NIMAv2.txt |
| bsp file | 1873_Agenor_nima_v2.bsp |
| Date of first observation | 1971-03-25 |
| Date of last observation | 2023-06-25 |
| Number of observations used in the fit | 3258 |
| Number of rejected observations | 10 |
| Number of DES observations | 0 |
| Number of MPC observations | 2955 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.114 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv2 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2023-01 | 0.023 | 0.003 |
| 2023-07 | 0.029 | 0.004 |
| 2024-01 | 0.023 | 0.003 |
| 2024-07 | 0.027 | 0.003 |
| 2025-01 | 0.025 | 0.003 |
| 2025-07 | 0.026 | 0.003 |
| 2026-01 | 0.027 | 0.002 |
| 2026-07 | 0.026 | 0.002 |
| 2027-01 | 0.031 | 0.003 |
Ephemeris comparison
Difference between NIMAv2 and JPL53 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.