(16560) Daitor
This object has a more recent orbit available here
Object
Object | (16560) Daitor |
Diameter(1) | 43 km |
Dynamic class(1) | trojan |
Absolute magnitude | 10.70 |
G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
Epoch (Julian date) | 2458200.5 |
Semi major axis | 5.055952 ± 0.000001 au |
Eccentricity | 0.040650522 ± 0.000000081 |
Inclination | 15.311234917 ± 0.000006842 ° |
Longitude of ascending node | 100.759124 ± 0.000029 ° |
Argument of perihelia | 157.893332 ± 0.000209 ° |
Mean anomaly | 264.801021 ± 0.000197 ° |
Orbital period | 11.37 yr |
Ephemeris & Observations
Ephemeris version | NIMAv1 |
Observation file |
omc_ast_NIMAv1.txt |
bsp file | 16560_Daitor_nima_v1.bsp |
Date of first observation | 1955-10-23 |
Date of last observation | 2018-11-20 |
Number of observations used in the fit | 1296 |
Number of rejected observations | 3 |
Number of DES observations | 115 |
Number of MPC observations | 1184 |
Number of unpublished observations | 0 |
RMS of observations | 0.436 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv1 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
date | σα (arcsec) | σδ (arcsec) |
2018-01 | 0.036 | 0.028 |
2018-07 | 0.031 | 0.021 |
2019-01 | 0.046 | 0.027 |
2019-07 | 0.049 | 0.027 |
2020-01 | 0.059 | 0.031 |
2020-07 | 0.077 | 0.043 |
2021-01 | 0.069 | 0.032 |
2021-07 | 0.106 | 0.046 |
2022-01 | 0.073 | 0.026 |
Ephemeris comparison
Difference between NIMAv1 and JPL20 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.