(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 | 0.119635187 ± 0.000000016 |
| Inclination | 18.940204151 ± 0.000000288 ° |
| Longitude of ascending node | 113.517672 ± 0.000002 ° |
| Argument of perihelia | 318.579329 ± 0.000009 ° |
| Mean anomaly | 358.197547 ± 0.000012 ° |
| Orbital period | 11.82 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv5 |
| Observation file |
omc_ast_NIMAv5.txt |
| bsp file | 4063_Euforbo_nima_v5.bsp |
| Date of first observation | 1943-03-09 |
| Date of last observation | 2023-01-24 |
| Number of observations used in the fit | 3614 |
| Number of rejected observations | 19 |
| Number of DES observations | 0 |
| Number of MPC observations | 3353 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.128 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv5 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.023 | 0.010 |
| 2022-07 | 0.021 | 0.008 |
| 2023-01 | 0.033 | 0.012 |
| 2023-07 | 0.024 | 0.006 |
| 2024-01 | 0.036 | 0.003 |
| 2024-07 | 0.025 | 0.002 |
| 2025-01 | 0.030 | 0.007 |
| 2025-07 | 0.025 | 0.005 |
| 2026-01 | 0.024 | 0.009 |
Ephemeris comparison
Difference between NIMAv5 and JPL87 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.