(470309) 2007JK43


Object

Object (470309) 2007JK43
Diameter(1) 176 km
Dynamic class(1) Centaur
Absolute magnitude 7.00
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2458200.5
Semi major axis 46.673188 ± 0.002347 au
Eccentricity 0.495126717 ± 0.000022708
Inclination 44.827743029 ± 0.000117335 °
Longitude of ascending node 233.536993 ± 0.000071 °
Argument of perihelia 10.480690 ± 0.000493 °
Mean anomaly 7.049104 ± 0.000647 °
Orbital period 318.87 yr

Ephemeris & Observations

Ephemeris version NIMAv5
Observation file (documentation) omc_ast_NIMAv5.txt
bsp file 470309_2007JK43_nima_v5.bsp
Date of first observation 2007-05-10
Date of last observation 2021-08-02
Number of observations used in the fit 313
Number of rejected observations 0
Number of DES observations 0
Number of MPC observations 279
Number of unpublished observations 34
RMS of observations 0.109 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)
2021-01 0.046 0.043
2021-07 0.039 0.020
2022-01 0.068 0.038
2022-07 0.070 0.039
2023-01 0.097 0.036
2023-07 0.106 0.063
2024-01 0.132 0.041
2024-07 0.150 0.090
2025-01 0.173 0.053

Ephemeris comparison

residual plot

Difference between NIMAv5 and JPL9 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