Table 2.

Results obtained by PSO-Snake hybrid algorithm for the same CBP structures of Table 1. Structure is the tracking ID of each CBP, n is the number of frames for tracking the structure, b is the detected heliographic latitude of the structure, ω is the calculated angular rotation velocity, ∆ω is the range of ω, and ω E is the orbital angular rotation velocity of the Earth for the given time of observation.

Structure n b [deg] ω [deg/day] Δω [deg/day] ω E [deg/day]
xy0510.01 86 67.1 11.21 ±0.64 0.986
xy0510.03 86 21 14.38 ±0.30 0.986
xy0510.04 86 −32.2 13.80 ±0.34 0.986
xy0510.07 86 28.1 15.11 ±0.43 0.986

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