Table A.2.
Astrometric results
| UT Date | Julian year | Number of vis. | ρ | θ | σmaj | σmin | ϕ | O − Cρ | O − Cθ |
|---|---|---|---|---|---|---|---|---|---|
| mas | deg. | mas | mas | deg. | mas | deg. | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
| Apr 18 | 1989.2946 | 44 | 3.47 | 70.28 | 0.371 | 0.079 | 102.4 | 0.26 | -0.3 |
| Jun 19 | 1991.4629 | 59 | 7.22 | 251.89 | 0.208 | 0.098 | 65.3 | -0.19 | -0.6 |
| Feb 28 | 1992.1583 | 39 | 6.98 | 253.18 | 0.198 | 0.075 | 112.3 | 0.23 | 1.8 |
| Apr 28 | 1992.3226 | 75 | 8.27 | 254.54 | 0.287 | 0.119 | 84.1 | 0.74 | 0.4 |
| May 02 | 1992.3336 | 61 | 7.47 | 256.13 | 0.327 | 0.166 | 83.5 | 0.60 | 0.7 |
| Jun 08 | 1992.4349 | 87 | 6.39 | 249.32 | 0.222 | 0.062 | 62.6 | 0.26 | -1.3 |
| Mar 19 | 1997.2123 | 549 | 4.62 | 251.34 | 0.264 | 0.192 | 10.1 | 0.02 | 2.6 |
| Mar 26 | 1997.2315 | 549 | 7.25 | 252.08 | 0.226 | 0.131 | 135.0 | 0.04 | -0.0 |
| May 08 | 1997.3492 | 337 | 3.73 | 247.60 | 0.409 | 0.156 | 121.7 | -0.00 | 0.3 |
| Jun 19 | 1997.4642 | 234 | 3.12 | 77.49 | 0.345 | 0.136 | 135.0 | -0.01 | 4.0 |
| Jun 21 | 1997.4697 | 316 | 2.08 | 77.18 | 0.414 | 0.183 | 154.8 | -0.10 | -1.1 |
| Jun 22 | 1997.4724 | 450 | 1.47 | 76.79 | 0.345 | 0.136 | 135.0 | 0.02 | -6.9 |
| Jun 26 | 1997.4833 | 237 | 2.27 | 250.11 | 0.478 | 0.181 | 116.5 | 0.28 | 8.4 |
| Jun 27 | 1997.4861 | 328 | 2.82 | 236.87 | 0.264 | 0.192 | 10.1 | 0.07 | -8.0 |
| Jul 04 | 1997.5052 | 656 | 6.26 | 248.55 | 0.226 | 0.131 | 135.0 | -0.21 | -2.5 |
| Jul 08 | 1997.5162 | 246 | 7.42 | 254.26 | 0.453 | 0.117 | 135.0 | 0.01 | 1.8 |
| Jul 09 | 1997.5189 | 246 | 7.39 | 252.07 | 0.740 | 0.186 | 122.1 | -0.14 | -0.7 |
| Jul 13 | 1997.5299 | 137 | 7.85 | 257.55 | 0.789 | 0.268 | 135.0 | 0.28 | 3.6 |
| Jul 14 | 1997.5326 | 410 | 7.32 | 252.20 | 0.414 | 0.183 | 115.2 | -0.15 | -2.1 |
| Mar 05 | 2013.1740 | 420 | 6.25 | 256.07 | 0.226 | 0.131 | 135.0 | -0.01 | -0.3 |
| Mar 06 | 2013.1767 | 360 | 5.62 | 256.83 | 0.292 | 0.143 | 157.7 | -0.31 | 0.0 |
| Mar 07 | 2013.1794 | 330 | 5.39 | 256.09 | 0.582 | 0.226 | 22.4 | -0.18 | -1.2 |
| May 24 | 2013.3930 | 445 | 2.62 | 242.84 | 0.226 | 0.131 | 135.0 | -0.01 | -1.7 |
| May 25 | 2013.3957 | 1208 | 3.43 | 244.31 | 0.264 | 0.192 | 10.1 | 0.09 | -2.2 |
| May 26 | 2013.3985 | 480 | 4.11 | 245.67 | 0.374 | 0.221 | 121.5 | 0.11 | -2.1 |
| May 27 | 2013.4012 | 1530 | 4.53 | 250.81 | 0.292 | 0.143 | 157.7 | -0.07 | 2.1 |
| May 30 | 2013.4094 | 1649 | 6.04 | 251.26 | 0.226 | 0.131 | 135.0 | -0.01 | 0.7 |
| May 31 | 2013.4122 | 1829 | 6.30 | 253.41 | 0.264 | 0.192 | 10.1 | -0.12 | 2.4 |
| Jun 01 | 2013.4149 | 1620 | 6.66 | 253.59 | 0.226 | 0.131 | 135.0 | -0.07 | 2.2 |
| Jun 03 | 2013.4204 | 1304 | 7.27 | 252.46 | 0.292 | 0.143 | 157.7 | 0.05 | 0.4 |
| Jun 04 | 2013.4231 | 1920 | 7.40 | 253.14 | 0.264 | 0.192 | 10.1 | 0.01 | 0.7 |
| Jun 05 | 2013.4259 | 1608 | 7.60 | 253.22 | 0.226 | 0.131 | 135.0 | 0.09 | 0.5 |
| Jun 07 | 2013.4313 | 60 | 7.56 | 255.34 | 1.058 | 0.490 | 115.7 | -0.07 | 2.0 |
| Jun 08 | 2013.4341 | 339 | 7.63 | 257.33 | 0.576 | 0.317 | 143.8 | 0.00 | 3.7 |
| Jun 10 | 2013.4395 | 450 | 7.63 | 255.59 | 0.264 | 0.192 | 10.1 | 0.14 | 1.4 |
| Jun 11 | 2013.4423 | 457 | 7.72 | 256.67 | 0.414 | 0.183 | 154.8 | 0.35 | 2.1 |
| Jun 13 | 2013.4478 | 171 | 7.15 | 258.39 | 0.385 | 0.243 | 162.3 | 0.13 | 3.2 |
| Jun 15 | 2013.4532 | 300 | 6.77 | 258.07 | 0.688 | 0.171 | 161.5 | 0.26 | 2.1 |
| Jun 16 | 2013.4560 | 300 | 6.38 | 256.03 | 0.345 | 0.136 | 135.0 | 0.17 | -0.4 |
| Jun 17 | 2013.4587 | 359 | 5.95 | 256.65 | 0.483 | 0.197 | 136.6 | 0.08 | -0.2 |
| Jun 24 | 2014.4772 | 4248 | 0.80 | 12.46 | 0.226 | 0.131 | 135.0 | 0.14 | -15.8 |
| Jun 25 | 2014.4799 | 4186 | 1.23 | 41.58 | 0.226 | 0.131 | 135.0 | 0.07 | -9.7 |
| Jun 26 | 2014.4827 | 4334 | 1.81 | 57.29 | 0.226 | 0.131 | 135.0 | 0.09 | -2.6 |
| Mar 28 | 2015.2356 | 875 | 5.39 | 247.62 | 0.226 | 0.131 | 135.0 | -0.04 | -2.2 |
| Mar 29 | 2015.2383 | 620 | 5.84 | 246.62 | 0.483 | 0.197 | 133.4 | -0.04 | -3.7 |
| Apr 21 | 2015.3013 | 895 | 4.11 | 256.71 | 0.344 | 0.126 | 135.0 | 0.18 | -3.5 |
| May 20 | 2015.3807 | 476 | 5.93 | 249.06 | 0.514 | 0.261 | 177.8 | -0.18 | -1.6 |
| May 28 | 2015.4026 | 1065 | 7.46 | 249.77 | 0.345 | 0.136 | 135.0 | -0.17 | -3.6 |
| Jun 01 | 2015.4135 | 630 | 7.23 | 251.26 | 0.483 | 0.197 | 136.6 | -0.12 | -3.3 |
Notes: Column 3 lists the number of visibility measurements obtained; Cols. 4 and 5 separation and position angle of the binary components (at local midnight of the date of observation); Cols. 6, 7, and 8 the major and minor axis, and the position angle of the astrometric error ellipse, respectively. Columns 9 and 10 list the offsets in separation and angle between the measurements and the predicted orbit positions.
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