(24448) 2000QE42


Object

Object (24448) 2000QE42
Diameter(1) 31 km
Dynamic class(1) trojan
Absolute magnitude 11.51
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2459800.5
Semi major axis 5.153561 ± 0.000000 au
Eccentricity 0.053754369 ± 0.000000051
Inclination 8.851600059 ± 0.000001676 °
Longitude of ascending node 156.855595 ± 0.000028 °
Argument of perihelia 198.638572 ± 0.000046 °
Mean anomaly 288.797402 ± 0.000039 °
Orbital period 11.70 yr

Ephemeris & Observations

Ephemeris version NIMAv3
Observation file (documentation) omc_ast_NIMAv3.txt
bsp file 24448_2000QE42_nima_v3.bsp
Date of first observation 1988-10-09
Date of last observation 2022-07-16
Number of observations used in the fit 1648
Number of rejected observations 9
Number of DES observations 55
Number of MPC observations 1592
Number of unpublished observations 10
RMS of observations 0.409 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)
2022-01 0.008 0.007
2022-07 0.016 0.014
2023-01 0.015 0.011
2023-07 0.030 0.019
2024-01 0.024 0.014
2024-07 0.040 0.019
2025-01 0.036 0.015
2025-07 0.046 0.016
2026-01 0.051 0.015

Ephemeris comparison

residual plot

Difference between NIMAv3 and JPL34 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