(60558) Echeclus

Ephemeris solution

Orbit quality

time +0 +6 +12 +18 +24
σ (α) 0.020 0.028 0.035 0.038 0.050
σ (δ) 0.019 0.020 0.026 0.023 0.031

Time is number of months after last observation (2016-12-30) and σ are in arcsec.

Residuals (O-C) with NIMA ephemeris


z scale (in colour) is the weight in arcsec used in the fitting process

O-C (NIMA) 2013-2018


z scale (in colour) is the weight in arcsec used in the fitting process

NIMA-JPL (2013-2019)

Blue bullets are O-C of observations compared to JPL ephemeris

Other plots

NIMA-JPL (2013-2019) -- v3 version


NIMA-JPL (2013-2019) -- v4 version : v3 + MPC (2016) + PdM (2016.12) --adopted solution--