(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 46.672411 ± 0.002548 au
Eccentricity 0.495119048 ± 0.000024689
Inclination 44.827737724 ± 0.000132402 °
Longitude of ascending node 233.536992 ± 0.000073 °
Argument of perihelia 10.480690 ± 0.000501 °
Mean anomaly 7.049280 ± 0.000683 °
Orbital period 318.86 yr

Ephemeris & Observations

Ephemeris version NIMAv3
Observation file (documentation) omc_ast_NIMAv3.txt
bsp file 470309_2007JK43_nima_v3.bsp
Date of first observation 2007-05-10
Date of last observation 2020-07-21
Number of observations used in the fit 292
Number of rejected observations 0
Number of DES observations 0
Number of MPC observations 276
Number of unpublished observations 16
RMS of observations 0.110 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)
2020-01 0.036 0.053
2020-07 0.019 0.008
2021-01 0.053 0.047
2021-07 0.045 0.023
2022-01 0.078 0.040
2022-07 0.080 0.045
2023-01 0.112 0.037
2023-07 0.123 0.072
2024-01 0.152 0.042

Ephemeris comparison

residual plot

Difference between NIMAv3 and JPL6 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