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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