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Table 4

Blob rotation.

Period Period
a a computed observed Rot. speed Mass
Blob FAP (mas) (au) (yr) (yr) (deg yr−1) (M) Remark
A 0.02 118 13.5 36.2 42.7 ± 5.6 −11.9 ± 2.2 1.60 ± 0.98 Pol and nocoro images
B <1E − 7 188 21.4 72.5 78.3 ± 5.3 −5.04 ± 0.38 2.30 ± 0.29
C <1E − 7 202 23.1 80.9 73.0 ± 4.3 −4.48 ± 0.25 1.60 ± 0.23
D 4E-6 319 36.4 160.5 173.8 ± 20.1 −2.08 ± 0.25 1.34 ± 0.40

Note. Semi-major axis a is obtained assuming circular orbits on the disk plane; the computed period is for a mass of 1.87 M; the observed period is estimated from the angular speed on the disk plane; the mass is determined using Kepler’s third law; the uncertainty here is due to the errors in the angular speed.

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