(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 | 19.502202 ± 0.000744 au |
| Eccentricity | 0.277341949 ± 0.000019948 |
| Inclination | 12.755234308 ± 0.000446827 ° |
| Longitude of ascending node | 117.381979 ± 0.000830 ° |
| Argument of perihelia | 93.760965 ± 0.003978 ° |
| Mean anomaly | 70.314242 ± 0.005709 ° |
| Orbital period | 86.13 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv3 |
| Observation file |
omc_ast_NIMAv3.txt |
| bsp file | 83982_Crantor_nima_v3.bsp |
| Date of first observation | 2001-03-20 |
| Date of last observation | 2014-08-01 |
| Number of observations used in the fit | 122 |
| Number of rejected observations | 3 |
| Number of DES observations | 0 |
| Number of MPC observations | 116 |
| Number of unpublished observations | 9 |
| RMS of observations | 0.331 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date | σα (arcsec) | σδ (arcsec) |
| 2018-01 | 0.627 | 0.059 |
| 2018-07 | 0.955 | 0.090 |
| 2019-01 | 0.853 | 0.070 |
| 2019-07 | 1.234 | 0.135 |
| 2020-01 | 1.101 | 0.101 |
| 2020-07 | 1.533 | 0.200 |
| 2021-01 | 1.370 | 0.152 |
| 2021-07 | 1.849 | 0.282 |
| 2022-01 | 1.657 | 0.220 |
Ephemeris comparison
Difference between NIMAv3 and JPL20 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.