(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 | 0.119635188 ± 0.000000068 |
| Inclination | 18.940198715 ± 0.000005808 ° |
| Longitude of ascending node | 113.517666 ± 0.000021 ° |
| Argument of perihelia | 318.579356 ± 0.000034 ° |
| Mean anomaly | 358.197526 ± 0.000027 ° |
| Orbital period | 11.82 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv4 |
| Observation file |
omc_ast_NIMAv4.txt |
| bsp file | 4063_Euforbo_nima_v4.bsp |
| Date of first observation | 1943-03-09 |
| Date of last observation | 2022-03-10 |
| Number of observations used in the fit | 2954 |
| Number of rejected observations | 19 |
| Number of DES observations | 0 |
| Number of MPC observations | 2973 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.403 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv4 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.034 | 0.026 |
| 2022-07 | 0.033 | 0.022 |
| 2023-01 | 0.056 | 0.034 |
| 2023-07 | 0.043 | 0.022 |
| 2024-01 | 0.072 | 0.030 |
| 2024-07 | 0.050 | 0.020 |
| 2025-01 | 0.064 | 0.028 |
| 2025-07 | 0.053 | 0.022 |
| 2026-01 | 0.053 | 0.028 |
Ephemeris comparison
Difference between NIMAv4 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.