(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 | 8.92 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2459800.5 |
| Semi major axis | 19.488757 ± 0.000106 au |
| Eccentricity | 0.273863015 ± 0.000002561 |
| Inclination | 12.759402013 ± 0.000018422 ° |
| Longitude of ascending node | 117.395671 ± 0.000041 ° |
| Argument of perihelia | 93.772478 ± 0.000611 ° |
| Mean anomaly | 84.451131 ± 0.001019 ° |
| Orbital period | 86.04 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv6 |
| Observation file |
omc_ast_NIMAv6.txt |
| bsp file | 83982_Crantor_nima_v6.bsp |
| Date of first observation | 2001-03-19 |
| Date of last observation | 2021-08-31 |
| Number of observations used in the fit | 328 |
| Number of rejected observations | 3 |
| Number of DES observations | 0 |
| Number of MPC observations | 313 |
| Number of unpublished observations | 18 |
| RMS of observations | 0.222 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2022-01 | 0.086 | 0.044 |
| 2022-07 | 0.128 | 0.053 |
| 2023-01 | 0.109 | 0.048 |
| 2023-07 | 0.159 | 0.059 |
| 2024-01 | 0.137 | 0.053 |
| 2024-07 | 0.194 | 0.067 |
| 2025-01 | 0.168 | 0.059 |
| 2025-07 | 0.232 | 0.077 |
| 2026-01 | 0.203 | 0.067 |
Ephemeris comparison
Difference between NIMAv6 and JPL24 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.