(471325) 2011KT19


This object has a more recent orbit available here

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 35.598128 ± 0.001910 au
Eccentricity 0.330222130 ± 0.000024786
Inclination 110.104472228 ± 0.000134895 °
Longitude of ascending node 243.757213 ± 0.000100 °
Argument of perihelia 322.623506 ± 0.004159 °
Mean anomaly 33.983110 ± 0.004420 °
Orbital period 212.40 yr

Ephemeris & Observations

Ephemeris version NIMAv5
Observation file (documentation) omc_ast_NIMAv5.txt
bsp file 471325_2011KT19_nima_v5.bsp
Date of first observation 2011-05-21
Date of last observation 2020-06-21
Number of observations used in the fit 168
Number of rejected observations 0
Number of DES observations 0
Number of MPC observations 132
Number of unpublished observations 28
RMS of observations 0.143 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv5 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2020-01 0.057 0.079
2020-07 0.110 0.071
2021-01 0.064 0.087
2021-07 0.124 0.107
2022-01 0.073 0.112
2022-07 0.139 0.158
2023-01 0.083 0.152
2023-07 0.156 0.220
2024-01 0.093 0.205

Ephemeris comparison

residual plot

Difference between NIMAv5 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.