(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 35.597546 ± 0.002417 au
Eccentricity 0.330213811 ± 0.000032891
Inclination 110.104525892 ± 0.000182525 °
Longitude of ascending node 243.757224 ± 0.000127 °
Argument of perihelia 322.622609 ± 0.004562 °
Mean anomaly 33.984355 ± 0.005297 °
Orbital period 212.39 yr

Ephemeris & Observations

Ephemeris version NIMAv3
Observation file (documentation) omc_ast_NIMAv3.txt
bsp file 471325_2011KT19_nima_v3.bsp
Date of first observation 2011-05-21
Date of last observation 2020-02-23
Number of observations used in the fit 136
Number of rejected observations 0
Number of DES observations 0
Number of MPC observations 132
Number of unpublished observations 4
RMS of observations 0.157 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv3 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2019-01 0.082 0.098
2019-07 0.177 0.108
2020-01 0.096 0.107
2020-07 0.201 0.150
2021-01 0.112 0.134
2021-07 0.226 0.209
2022-01 0.129 0.180
2022-07 0.253 0.283
2023-01 0.148 0.243

Ephemeris comparison

residual plot

Difference between NIMAv3 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.