(659) Nestor
This object has a more recent orbit available here
Object
| Object | (659) Nestor |
| Diameter(1) | 112 km |
| Dynamic class(1) | trojan |
| Absolute magnitude | 8.77 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2460600.5 |
| Semi major axis | 5.169928 ± 0.000000 au |
| Eccentricity | 0.115835623 ± 0.000000047 |
| Inclination | 4.521962212 ± 0.000005373 ° |
| Longitude of ascending node | 350.756035 ± 0.000058 ° |
| Argument of perihelia | 343.976464 ± 0.000062 ° |
| Mean anomaly | 148.860387 ± 0.000021 ° |
| Orbital period | 11.76 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv7 |
| Observation file |
omc_ast_NIMAv7.txt |
| bsp file | 659_Nestor_nima_v7.bsp |
| Date of first observation | 1908-03-23 |
| Date of last observation | 2024-05-22 |
| Number of observations used in the fit | 5280 |
| Number of rejected observations | 38 |
| Number of DES observations | 0 |
| Number of MPC observations | 5272 |
| Number of unpublished observations | 46 |
| RMS of observations | 2.391 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv7 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2024-01 | 0.031 | 0.024 |
| 2024-07 | 0.022 | 0.017 |
| 2025-01 | 0.031 | 0.024 |
| 2025-07 | 0.024 | 0.018 |
| 2026-01 | 0.030 | 0.022 |
| 2026-07 | 0.026 | 0.018 |
| 2027-01 | 0.030 | 0.020 |
| 2027-07 | 0.029 | 0.020 |
| 2028-01 | 0.031 | 0.018 |
Ephemeris comparison
Difference between NIMAv7 and JPL113 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.