(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 | 8.85 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2456839.338443525 |
| Semi major axis | 5.178381 ± 0.000001 au |
| Eccentricity | 0.119189760 ± 0.000000091 |
| Inclination | 18.939206296 ± 0.000007017 ° |
| Longitude of ascending node | 113.519589 ± 0.000021 ° |
| Argument of perihelia | 318.573678 ± 0.000043 ° |
| Mean anomaly | 110.618708 ± 0.000053 ° |
| Orbital period | 11.78 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 4063_Euforbo_nima_v3.bsp |
| Date of first observation | 1943-03-09 |
| Date of last observation | 2020-11-16 |
| Number of observations used in the fit | 2352 |
| Number of rejected observations | 15 |
| Number of DES observations | 0 |
| Number of MPC observations | 2367 |
| Number of unpublished observations | 0 |
| RMS of observations | 0.446 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2021-01 | 0.033 | 0.024 |
| 2021-07 | 0.038 | 0.027 |
| 2022-01 | 0.049 | 0.033 |
| 2022-07 | 0.046 | 0.027 |
| 2023-01 | 0.075 | 0.040 |
| 2023-07 | 0.054 | 0.024 |
| 2024-01 | 0.086 | 0.031 |
| 2024-07 | 0.059 | 0.021 |
| 2025-01 | 0.072 | 0.030 |
Ephemeris comparison
Difference between NIMAv3 and JPL80 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.