(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 7.47
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2459800.5
Semi major axis 35.746465 ± 0.001544 au
Eccentricity 0.331192165 ± 0.000020562
Inclination 110.250525288 ± 0.000054009 °
Longitude of ascending node 243.853980 ± 0.000025 °
Argument of perihelia 323.326011 ± 0.003200 °
Mean anomaly 39.007118 ± 0.003856 °
Orbital period 213.73 yr

Ephemeris & Observations

Ephemeris version NIMAv8
Observation file (documentation) omc_ast_NIMAv8.txt
bsp file 471325_2011KT19_nima_v8.bsp
Date of first observation 2010-05-10
Date of last observation 2023-06-21
Number of observations used in the fit 301
Number of rejected observations 10
Number of DES observations 0
Number of MPC observations 259
Number of unpublished observations 44
RMS of observations 0.134 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv8 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2023-01 0.064 0.103
2023-07 0.092 0.140
2024-01 0.071 0.134
2024-07 0.103 0.183
2025-01 0.078 0.171
2025-07 0.115 0.230
2026-01 0.086 0.214
2026-07 0.128 0.283
2027-01 0.094 0.262

Ephemeris comparison

residual plot

Difference between NIMAv8 and JPL13 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.