(470309) 2007JK43


Object

Object (470309) 2007JK43
Diameter(1) 176 km
Dynamic class(1) Centaur
Absolute magnitude 7.29
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2457285.262689487
Semi major axis 46.310605 ± 0.001891 au
Eccentricity 0.491451902 ± 0.000018546
Inclination 44.874594391 ± 0.000022900 °
Longitude of ascending node 233.572798 ± 0.000026 °
Argument of perihelia 10.139078 ± 0.000577 °
Mean anomaly 4.369056 ± 0.000404 °
Orbital period 315.16 yr

Ephemeris & Observations

Ephemeris version NIMAv6
Observation file (documentation) omc_ast_NIMAv6.txt
bsp file 470309_2007JK43_nima_v6.bsp
Date of first observation 2007-05-10
Date of last observation 2022-05-06
Number of observations used in the fit 321
Number of rejected observations 0
Number of DES observations 0
Number of MPC observations 279
Number of unpublished observations 42
RMS of observations 0.110 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv6 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2022-01 0.046 0.032
2022-07 0.049 0.030
2023-01 0.066 0.034
2023-07 0.074 0.047
2024-01 0.090 0.040
2024-07 0.104 0.065
2025-01 0.118 0.050
2025-07 0.138 0.086
2026-01 0.151 0.062

Ephemeris comparison

residual plot

Difference between NIMAv6 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