(10199) Chariklo


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 15.841610 ± 0.000002 au
Eccentricity 0.170616621 ± 0.000000108
Inclination 23.358559564 ± 0.000002666 °
Longitude of ascending node 300.432504 ± 0.000005 °
Argument of perihelia 243.357980 ± 0.000028 °
Mean anomaly 86.739975 ± 0.000043 °
Orbital period 63.05 yr

Ephemeris & Observations

Ephemeris version NIMAv18
Observation file (documentation) omc_ast_NIMAv18.txt
bsp file 10199_Chariklo_nima_v18.bsp
Date of first observation 1988-11-05
Date of last observation 2020-06-19
Number of observations used in the fit 1193
Number of rejected observations 23
Number of DES observations 0
Number of MPC observations 668
Number of unpublished observations 548
RMS of observations 0.376 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv18 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2020-01 0.002 0.002
2020-07 0.003 0.003
2021-01 0.003 0.003
2021-07 0.005 0.004
2022-01 0.005 0.004
2022-07 0.007 0.005
2023-01 0.006 0.005
2023-07 0.009 0.007
2024-01 0.008 0.007

Ephemeris comparison

residual plot

Difference between NIMAv18 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.

Previous NIMA versions