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Table 4

Ellipse parameters for feature A1 in Fig. 2c.

Parameter Red Purple

A1 Semi-major axis (′′) 1.66 2.35
(no fit) Semi-minor axis (′′) 1.14 1.61
RA offset ux (′′) 0.16 −0.23
Dec offset uy (′′) 0.11 −0.16
Offset angle (°) 56 236
Hτ = 1 (au) 49.2 70.7
Hτ = 1/r 0.16 0.16

Notes. In Fig. 5, the red ellipse shows the scenario where A1 is the bottom side of R1; the purple ellipse shows A1 as a separate outermost ellipse.

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