(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 | 6.58 |
G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
Epoch (Julian date) | 2459800.5 |
Semi major axis | 15.812297 ± 0.000002 au |
Eccentricity | 0.167464555 ± 0.000000050 |
Inclination | 23.368202375 ± 0.000000629 ° |
Longitude of ascending node | 300.438426 ± 0.000001 ° |
Argument of perihelia | 242.601469 ± 0.000026 ° |
Mean anomaly | 106.726909 ± 0.000034 ° |
Orbital period | 62.88 yr |
Ephemeris & Observations
Ephemeris version | NIMAv20 |
Observation file |
omc_ast_NIMAv20.txt |
bsp file | 10199_Chariklo_nima_v20.bsp |
Date of first observation | 1988-11-05 |
Date of last observation | 2022-07-04 |
Number of observations used in the fit | 1630 |
Number of rejected observations | 14 |
Number of DES observations | 0 |
Number of MPC observations | 1107 |
Number of unpublished observations | 537 |
RMS of observations | 0.365 arcsec |
Residuals

Residuals in right ascension and declination compared to NIMAv20 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
date | σα (arcsec) | σδ (arcsec) |
2022-01 | 0.002 | 0.002 |
2022-07 | 0.003 | 0.002 |
2023-01 | 0.003 | 0.002 |
2023-07 | 0.004 | 0.003 |
2024-01 | 0.003 | 0.003 |
2024-07 | 0.005 | 0.004 |
2025-01 | 0.004 | 0.004 |
2025-07 | 0.006 | 0.005 |
2026-01 | 0.005 | 0.005 |
Ephemeris comparison

Difference between NIMAv20 and JPL42 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.