(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 | 8.70 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458600.5 |
| Semi major axis | 5.185406 ± 0.000001 au |
| Eccentricity | 0.118102767 ± 0.000000070 |
| Inclination | 18.940941819 ± 0.000008286 ° |
| Longitude of ascending node | 113.512523 ± 0.000019 ° |
| Argument of perihelia | 318.329060 ± 0.000066 ° |
| Mean anomaly | 258.142087 ± 0.000058 ° |
| Orbital period | 11.81 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv2 |
| Observation file |
omc_ast_NIMAv2.txt |
| bsp file | 4063_Euforbo_nima_v2.bsp |
| Date of first observation | 1943-03-09 |
| Date of last observation | 2019-08-10 |
| Number of observations used in the fit | 1811 |
| Number of rejected observations | 5 |
| Number of DES observations | 0 |
| Number of MPC observations | 1816 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.517 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) |
| 2019-01 | 0.025 | 0.020 |
| 2019-07 | 0.039 | 0.028 |
| 2020-01 | 0.032 | 0.023 |
| 2020-07 | 0.046 | 0.031 |
| 2021-01 | 0.045 | 0.029 |
| 2021-07 | 0.052 | 0.032 |
| 2022-01 | 0.065 | 0.039 |
| 2022-07 | 0.057 | 0.030 |
| 2023-01 | 0.089 | 0.042 |
Ephemeris comparison
Difference between NIMAv2 and JPL66 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.