(659) Nestor
Object
| Object |
(659) Nestor |
| Diameter(1) |
112 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
8.76 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2460800.5 |
| Semi major axis |
5.170048 ± 0.000000 au |
| Eccentricity |
0.115689657 ± 0.000000047 |
| Inclination |
4.521833814 ± 0.000005108 ° |
| Longitude of ascending node |
350.757430 ± 0.000053 ° |
| Argument of perihelia |
343.833394 ± 0.000056 ° |
| Mean anomaly |
165.810938 ± 0.000019 ° |
| Orbital period |
11.76 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv8 |
| Observation file (documentation) |
omc_ast_NIMAv8.txt |
| bsp file |
659_Nestor_nima_v8.bsp |
| Date of first observation |
1908-03-23 |
| Date of last observation |
2025-06-18 |
| Number of observations used in the fit |
6189 |
| Number of rejected observations |
38 |
| Number of DES observations |
0 |
| Number of MPC observations |
6116 |
| Number of unpublished observations |
111 |
| RMS of observations |
2.209 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 |
0.025 |
0.022 |
| 2024-07 |
0.018 |
0.015 |
| 2025-01 |
0.025 |
0.020 |
| 2025-07 |
0.019 |
0.015 |
| 2026-01 |
0.024 |
0.019 |
| 2026-07 |
0.021 |
0.016 |
| 2027-01 |
0.026 |
0.018 |
| 2027-07 |
0.026 |
0.019 |
| 2028-01 |
0.028 |
0.018 |
Ephemeris comparison
Difference between NIMAv8 and JPL118 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