(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 ± 0.000005 au
Eccentricity 0.170616700 ± 0.000000240
Inclination 23.358559334 ± 0.000005805 °
Longitude of ascending node 300.432505 ± 0.000012 °
Argument of perihelia 243.358001 ± 0.000033 °
Mean anomaly 86.739942 ± 0.000071 °
Orbital period 63.05 yr

Ephemeris & Observations

Ephemeris version NIMAv15
Observation file (documentation) omc_ast_NIMAv15.txt
bsp file 10199_Chariklo_nima_v15.bsp
Date of first observation 1988-11-05
Date of last observation 2017-09-14
Number of observations used in the fit 1086
Number of rejected observations 23
Number of DES observations 0
Number of MPC observations 590
Number of unpublished observations 519
RMS of observations 0.376 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv15 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

residual plot

Difference between NIMAv15 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.