(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 (documentation) 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Number of unpublished observations 537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

residual plot

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

residual plot

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.