(471325) 2011KT19


Object

Object (471325) 2011KT19
Diameter(1) 161 km
Dynamic class(1) Centaur
Absolute magnitude 7.20
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2458600.5
Semi major axis 35.597315 ± 0.001345 au
Eccentricity 0.330212230 ± 0.000017391
Inclination 110.104485340 ± 0.000087735 °
Longitude of ascending node 243.757217 ± 0.000066 °
Argument of perihelia 322.621793 ± 0.002884 °
Mean anomaly 33.985003 ± 0.003116 °
Orbital period 212.39 yr

Ephemeris & Observations

Ephemeris version NIMAv6
Observation file (documentation) omc_ast_NIMAv6.txt
bsp file 471325_2011KT19_nima_v6.bsp
Date of first observation 2010-05-10
Date of last observation 2020-08-13
Number of observations used in the fit 280
Number of rejected observations 0
Number of DES observations 0
Number of MPC observations 238
Number of unpublished observations 34
RMS of observations 0.131 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2020-01 0.048 0.059
2020-07 0.070 0.055
2021-01 0.053 0.067
2021-07 0.078 0.079
2022-01 0.060 0.085
2022-07 0.088 0.113
2023-01 0.067 0.112
2023-07 0.098 0.154
2024-01 0.074 0.146

Ephemeris comparison

residual plot

Difference between NIMAv6 and JPL8 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