(4063) Euforbo
This object has a more recent orbit available here
Object
| Object | (4063) Euforbo |
| Diameter(1) | 96 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 8.83 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 5.188558 ± 0.000000 au |
| Eccentricity | 0.119635189 ± 0.000000016 |
| Inclination | 18.940204145 ± 0.000000288 ° |
| Longitude of ascending node | 113.517672 ± 0.000002 ° |
| Argument of perihelia | 318.579328 ± 0.000009 ° |
| Mean anomaly | 358.197550 ± 0.000012 ° |
| Orbital period | 11.82 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv6 |
| Observation file |
omc_ast_NIMAv6.txt |
| bsp file | 4063_Euforbo_nima_v6.bsp |
| Date of first observation | 1943-03-09 |
| Date of last observation | 2023-04-21 |
| Number of observations used in the fit | 3866 |
| Number of rejected observations | 19 |
| Number of DES observations | 0 |
| Number of MPC observations | 3605 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.128 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2023-01 | 0.032 | 0.011 |
| 2023-07 | 0.022 | 0.005 |
| 2024-01 | 0.034 | 0.003 |
| 2024-07 | 0.024 | 0.002 |
| 2025-01 | 0.029 | 0.007 |
| 2025-07 | 0.024 | 0.005 |
| 2026-01 | 0.024 | 0.009 |
| 2026-07 | 0.023 | 0.008 |
| 2027-01 | 0.020 | 0.009 |
Ephemeris comparison
Difference between NIMAv6 and JPL93 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.