(4501) Eurypylos
This object has a more recent orbit available here
Object
| Object | (4501) Eurypylos |
| Diameter(1) | 46 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 10.57 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460200.5 |
| Semi major axis | 5.223849 ± 0.000000 au |
| Eccentricity | 0.054589560 ± 0.000000015 |
| Inclination | 8.293979215 ± 0.000000295 ° |
| Longitude of ascending node | 244.265505 ± 0.000002 ° |
| Argument of perihelia | 180.493542 ± 0.000014 ° |
| Mean anomaly | 46.619729 ± 0.000013 ° |
| Orbital period | 11.94 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv1 |
| Observation file |
omc_ast_NIMAv1.txt |
| bsp file | 4501_Eurypylos_nima_v1.bsp |
| Date of first observation | 1951-12-01 |
| Date of last observation | 2023-11-01 |
| Number of observations used in the fit | 3610 |
| Number of rejected observations | 18 |
| Number of DES observations | 0 |
| Number of MPC observations | 2956 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.133 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv1 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2023-01 | 0.022 | 0.004 |
| 2023-07 | 0.016 | 0.004 |
| 2024-01 | 0.026 | 0.009 |
| 2024-07 | 0.019 | 0.007 |
| 2025-01 | 0.027 | 0.010 |
| 2025-07 | 0.022 | 0.009 |
| 2026-01 | 0.026 | 0.008 |
| 2026-07 | 0.026 | 0.009 |
| 2027-01 | 0.026 | 0.005 |
Ephemeris comparison
Difference between NIMAv1 and JPL55 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.