(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 | 10.58 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 5.227201 ± 0.000000 au |
| Eccentricity | 0.054552615 ± 0.000000014 |
| Inclination | 8.293550486 ± 0.000000295 ° |
| Longitude of ascending node | 244.259107 ± 0.000002 ° |
| Argument of perihelia | 181.252859 ± 0.000014 ° |
| Mean anomaly | 78.908088 ± 0.000012 ° |
| Orbital period | 11.95 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv2 |
| Observation file |
omc_ast_NIMAv2.txt |
| bsp file | 4501_Eurypylos_nima_v2.bsp |
| Date of first observation | 1951-12-01 |
| Date of last observation | 2024-05-26 |
| Number of observations used in the fit | 4102 |
| Number of rejected observations | 19 |
| Number of DES observations | 0 |
| Number of MPC observations | 3449 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.133 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) |
| 2024-01 | 0.024 | 0.008 |
| 2024-07 | 0.018 | 0.006 |
| 2025-01 | 0.024 | 0.009 |
| 2025-07 | 0.021 | 0.008 |
| 2026-01 | 0.024 | 0.008 |
| 2026-07 | 0.024 | 0.008 |
| 2027-01 | 0.024 | 0.004 |
| 2027-07 | 0.028 | 0.006 |
| 2028-01 | 0.023 | 0.001 |
Ephemeris comparison
Difference between NIMAv2 and JPL59 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.