(2363) Cebriones


Object

Object (2363) Cebriones
Diameter(1) 97 km
Dynamic class(1) trojan
Absolute magnitude 8.97
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2457395.749638616
Semi major axis 5.198844 ± 0.000000 au
Eccentricity 0.035364824 ± 0.000000025
Inclination 32.134107273 ± 0.000001413 °
Longitude of ascending node 211.754890 ± 0.000003 °
Argument of perihelia 56.551533 ± 0.000078 °
Mean anomaly 210.597500 ± 0.000075 °
Orbital period 11.85 yr

Ephemeris & Observations

Ephemeris version NIMAv5
Observation file (documentation) omc_ast_NIMAv5.txt
bsp file 2363_Cebriones_nima_v5.bsp
Date of first observation 1953-08-11
Date of last observation 2023-07-04
Number of observations used in the fit 3912
Number of rejected observations 21
Number of DES observations 0
Number of MPC observations 3929
Number of unpublished observations 4
RMS of observations 0.385 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv5 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2023-01 0.006 0.005
2023-07 0.012 0.006
2024-01 0.013 0.006
2024-07 0.020 0.006
2025-01 0.024 0.008
2025-07 0.027 0.008
2026-01 0.036 0.012
2026-07 0.032 0.010
2027-01 0.046 0.015

Ephemeris comparison

residual plot

Difference between NIMAv5 and JPL69 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