(10199) Chariklo
This object has a more recent orbit available here
Object
Object | (10199) Chariklo |
Diameter(1) | 242 km |
Dynamic class(1) | Centaur |
Absolute magnitude | 6.70 |
G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
Epoch (Julian date) | 2458600.5 |
Semi major axis | 15.841612 ± 0.000003 au |
Eccentricity | 0.170616688 ± 0.000000162 |
Inclination | 23.358558882 ± 0.000003913 ° |
Longitude of ascending node | 300.432505 ± 0.000008 ° |
Argument of perihelia | 243.357997 ± 0.000031 ° |
Mean anomaly | 86.739948 ± 0.000055 ° |
Orbital period | 63.05 yr |
Ephemeris & Observations
Ephemeris version | NIMAv17 |
Observation file |
omc_ast_NIMAv17.txt |
bsp file | 10199_Chariklo_nima_v17.bsp |
Date of first observation | 1988-11-05 |
Date of last observation | 2019-08-02 |
Number of observations used in the fit | 1183 |
Number of rejected observations | 23 |
Number of DES observations | 0 |
Number of MPC observations | 668 |
Number of unpublished observations | 538 |
RMS of observations | 0.379 arcsec |
Residuals

Residuals in right ascension and declination compared to NIMAv17 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
date | σα (arcsec) | σδ (arcsec) |
2019-01 | 0.003 | 0.002 |
2019-07 | 0.004 | 0.003 |
2020-01 | 0.004 | 0.004 |
2020-07 | 0.006 | 0.005 |
2021-01 | 0.006 | 0.005 |
2021-07 | 0.009 | 0.007 |
2022-01 | 0.008 | 0.007 |
2022-07 | 0.012 | 0.009 |
2023-01 | 0.011 | 0.009 |
Ephemeris comparison

Difference between NIMAv17 and JPL29 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.