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Table A.4

Radial PA from the collision point to the post-collision knots position, and deviation from their tangential velocity PA, ∆PA. The collision point considered is α(J2000) = 21h40m36s.71, δ(J2000) = +58° 18′18′′.1 (see Table 5).

Knot Radial PA (deg) ∆PA (deg)
C7 −84 −31 ± 10
C9 −113 180 ± 43
C8 −117 69 ± 28
C10 −70 −6 ± 9
C11 −65 −66 ± 35
C12 −77 32 ± 42
C13 −94 46 ± 20
C14 −73 −20 ± 5
C15 −71 1 ± 25
C16 −75 19 ± 10
C17 −76 3 ± 13

〈∆PA〉 = −7.8 ± 3.6
σ∆pa = 26.4

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