(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 ± 0.000000 au |
| Eccentricity | 0.118102768 ± 0.000000045 |
| Inclination | 18.940937252 ± 0.000005897 ° |
| Longitude of ascending node | 113.512521 ± 0.000013 ° |
| Argument of perihelia | 318.329056 ± 0.000042 ° |
| Mean anomaly | 258.142089 ± 0.000037 ° |
| Orbital period | 11.81 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv1 |
| Observation file |
omc_ast_NIMAv1.txt |
| bsp file | 4063_Euforbo_nima_v1.bsp |
| Date of first observation | 1943-03-09 |
| Date of last observation | 2018-12-03 |
| Number of observations used in the fit | 1680 |
| Number of rejected observations | 0 |
| Number of DES observations | 0 |
| Number of MPC observations | 1680 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.870 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv1 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2018-01 | 0.015 | 0.013 |
| 2018-07 | 0.023 | 0.019 |
| 2019-01 | 0.018 | 0.014 |
| 2019-07 | 0.030 | 0.020 |
| 2020-01 | 0.025 | 0.016 |
| 2020-07 | 0.036 | 0.022 |
| 2021-01 | 0.035 | 0.021 |
| 2021-07 | 0.039 | 0.023 |
| 2022-01 | 0.048 | 0.027 |
Ephemeris comparison
Difference between NIMAv1 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.