(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 | 15.841613 ± 0.000005 au |
Eccentricity | 0.170616737 ± 0.000000240 |
Inclination | 23.358559133 ± 0.000005784 ° |
Longitude of ascending node | 300.432505 ± 0.000012 ° |
Argument of perihelia | 243.358008 ± 0.000033 ° |
Mean anomaly | 86.739930 ± 0.000071 ° |
Orbital period | 63.05 yr |
Ephemeris & Observations
Ephemeris version | NIMAv16 |
Observation file |
omc_ast_NIMAv16.txt |
bsp file | 10199_Chariklo_nima_v16.bsp |
Date of first observation | 1988-11-05 |
Date of last observation | 2018-10-10 |
Number of observations used in the fit | 1175 |
Number of rejected observations | 24 |
Number of DES observations | 0 |
Number of MPC observations | 662 |
Number of unpublished observations | 537 |
RMS of observations | 0.379 arcsec |
Residuals

Residuals in right ascension and declination compared to NIMAv16 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
date | σα (arcsec) | σδ (arcsec) |
2018-01 | 0.003 | 0.002 |
2018-07 | 0.005 | 0.003 |
2019-01 | 0.005 | 0.004 |
2019-07 | 0.008 | 0.005 |
2020-01 | 0.008 | 0.006 |
2020-07 | 0.011 | 0.008 |
2021-01 | 0.011 | 0.008 |
2021-07 | 0.016 | 0.011 |
2022-01 | 0.015 | 0.011 |
Ephemeris comparison

Difference between NIMAv16 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.