(16560) Daitor


Object

Object (16560) Daitor
Diameter(1) 43 km
Dynamic class(1) trojan
Absolute magnitude 10.78
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2457308.142149056
Semi major axis 5.058917 ± 0.000001 au
Eccentricity 0.039632810 ± 0.000000082
Inclination 15.307230381 ± 0.000005084 °
Longitude of ascending node 100.754720 ± 0.000028 °
Argument of perihelia 158.179291 ± 0.000114 °
Mean anomaly 187.083691 ± 0.000122 °
Orbital period 11.38 yr

Ephemeris & Observations

Ephemeris version NIMAv3
Observation file (documentation) omc_ast_NIMAv3.txt
bsp file 16560_Daitor_nima_v3.bsp
Date of first observation 1955-10-23
Date of last observation 2020-09-14
Number of observations used in the fit 1984
Number of rejected observations 5
Number of DES observations 115
Number of MPC observations 1874
Number of unpublished observations 0
RMS of observations 0.373 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)
2021-01 0.035 0.023
2021-07 0.056 0.036
2022-01 0.041 0.025
2022-07 0.065 0.036
2023-01 0.045 0.024
2023-07 0.056 0.032
2024-01 0.046 0.023
2024-07 0.047 0.027
2025-01 0.048 0.026

Ephemeris comparison

residual plot

Difference between NIMAv3 and JPL31 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