(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 (documentation) 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Number of unpublished observations 538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

residual plot

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

residual plot

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.