(470309) 2007JK43


This object has a more recent orbit available here

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 46.669350 ± 0.004730 au
Eccentricity 0.495088965 ± 0.000045865
Inclination 44.827741916 ± 0.000274540 °
Longitude of ascending node 233.537008 ± 0.000122 °
Argument of perihelia 10.480265 ± 0.000861 °
Mean anomaly 7.050097 ± 0.001240 °
Orbital period 318.83 yr

Ephemeris & Observations

Ephemeris version NIMAv2
Observation file (documentation) omc_ast_NIMAv2.txt
bsp file 470309_2007JK43_nima_v2.bsp
Date of first observation 2007-05-10
Date of last observation 2019-07-29
Number of observations used in the fit 128
Number of rejected observations 0
Number of DES observations 0
Number of MPC observations 114
Number of unpublished observations 14
RMS of observations 0.131 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv2 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2019-01 0.113 0.122
2019-07 0.116 0.111
2020-01 0.147 0.132
2020-07 0.152 0.138
2021-01 0.192 0.143
2021-07 0.203 0.174
2022-01 0.248 0.159
2022-07 0.268 0.217
2023-01 0.315 0.181

Ephemeris comparison

residual plot

Difference between NIMAv2 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.