(83982) Crantor
This object has a more recent orbit available here
Object
| Object | (83982) Crantor |
| Diameter(1) | 59 km |
| Dynamic class(1) | Centaur |
| Absolute magnitude | 8.80 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458600.5 |
| Semi major axis | 19.502605 ± 0.000119 au |
| Eccentricity | 0.277353981 ± 0.000002685 |
| Inclination | 12.755246363 ± 0.000043994 ° |
| Longitude of ascending node | 117.381951 ± 0.000086 ° |
| Argument of perihelia | 93.762265 ± 0.000790 ° |
| Mean anomaly | 70.311367 ± 0.001023 ° |
| Orbital period | 86.13 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv5 |
| Observation file |
omc_ast_NIMAv5.txt |
| bsp file | 83982_Crantor_nima_v5.bsp |
| Date of first observation | 2001-03-19 |
| Date of last observation | 2020-09-14 |
| Number of observations used in the fit | 322 |
| Number of rejected observations | 3 |
| Number of DES observations | 0 |
| Number of MPC observations | 307 |
| Number of unpublished observations | 18 |
| RMS of observations | 0.222 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv5 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2021-01 | 0.073 | 0.042 |
| 2021-07 | 0.110 | 0.049 |
| 2022-01 | 0.094 | 0.045 |
| 2022-07 | 0.139 | 0.055 |
| 2023-01 | 0.119 | 0.049 |
| 2023-07 | 0.173 | 0.062 |
| 2024-01 | 0.149 | 0.055 |
| 2024-07 | 0.210 | 0.070 |
| 2025-01 | 0.183 | 0.062 |
Ephemeris comparison
Difference between NIMAv5 and JPL23 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.