(3548) Eurybates
Object
| Object |
(3548) Eurybates |
| Diameter(1) |
64 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
9.87 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460600.5 |
| Semi major axis |
5.212167 ± 0.000000 au |
| Eccentricity |
0.091209659 ± 0.000000010 |
| Inclination |
8.054036680 ± 0.000000612 ° |
| Longitude of ascending node |
43.544094 ± 0.000003 ° |
| Argument of perihelia |
28.160211 ± 0.000009 ° |
| Mean anomaly |
76.603419 ± 0.000007 ° |
| Orbital period |
11.90 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv8 |
| Observation file (documentation) |
omc_ast_NIMAv8.txt |
| bsp file |
3548_Eurybates_nima_v8.bsp |
| Date of first observation |
1954-02-09 |
| Date of last observation |
2024-06-15 |
| Number of observations used in the fit |
5594 |
| Number of rejected observations |
86 |
| Number of DES observations |
0 |
| Number of MPC observations |
5401 |
| Number of unpublished observations |
28 |
| RMS of observations |
0.120 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv8 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2024-01 |
0.007 |
0.004 |
| 2024-07 |
0.006 |
0.003 |
| 2025-01 |
0.010 |
0.006 |
| 2025-07 |
0.009 |
0.005 |
| 2026-01 |
0.011 |
0.007 |
| 2026-07 |
0.012 |
0.007 |
| 2027-01 |
0.012 |
0.006 |
| 2027-07 |
0.015 |
0.007 |
| 2028-01 |
0.013 |
0.004 |
Ephemeris comparison
Difference between NIMAv8 and JPL60 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.
Previous NIMA versions