Neil Webster, REDACTED
e-mail: REDACTED
Introduction
The following measurements were made throughout 2017 using a Meade 12mm astrometric illuminated reticle eyepiece plus 2.5x powermate attached to a Altair Astro 115mm refractor (focal length 805mm, f7). The total magnification was 167.5x with a field of view of 0.3 degrees.
All final separation values were calculated from a calibration determined by the timing/transit method (Simple Techniques of Measurement: E.T.H. Teague, Chapter 12 in Observing and Measuring Visual Double Stars ed. Argyle, pub. Springer). The final calculated value used was:
12’’.49 +/- 0’’.04 per division on the reticle measuring scale.
Position Angle measurements were made using the method previously outlined in DSSC 25 which involves using the directional west arrow on the handset to electronically steer the primary to the outer edge of the protractor scale rather than turning off the mount motor for an unaided drift. This has proven to be very reliable and greatly increases the number of measures that can be performed during an evening. As previously stated it relies on as precise polar alignment as possible.
10 separation and 10 position angle measurements (N = 20) were performed on the same evening for each pair and the final results and associated uncertainties calculated.
Extensive use was made of the Astroplanner software. Separations throughout the year were limited to a range from 15 arc-seconds to 100 arc-seconds. The faintest magnitude measured was 8.5. These values were out of necessity given the limiting magnification, the high calibration value and the considerable local light pollution. The red light in the eyepiece, even when used at its minimum intensity, also limits the faintest magnitude that can be reasonably measured.
These parameters were set up in the software for whatever constellation was convenient at the date of measurement. All measurements made on any evening were for doubles in close proximity (usually in order of increasing RA) so time was not wasted slewing between distant pairs. This allowed far more measurements to be made than for previous years.
As most of these systems are comparatively wide the orbits are generally very long (1,000 years+) and very few have accurate orbital calculations. Residuals (from the online version of 6th USNO Catalogue of Orbits of Visual Binary Stars) have been given for the few systems calculated but none have a better than grade 4 certainty.
Values from the Fourth Catalogue of Interferometric Measurements have provided a more extensive set of residuals but most of these are from 1991 which is 26 years before the author’s measurements. Although many of the systems have not changed in this time some have and, in certain cases, this shows in the larger residuals calculated.
Where residuals are large (greater than 1o in PA or 1” in separation) relative proper motions have been analysed. Any notable differences between the components’ proper motions that may explain the larger than average residuals are presented in table 4.
Table 5 presents three alternative, more favourable residuals for three systems that have larger than expected residuals.
It should be stressed that these final two tables represent very basic analysis and further professional data and work would be needed to clarify the exact natures and evolving properties of these systems.
References:
The Cambridge Double Star Atlas, (Mullany J. Tirion W. pub. Cambridge)
Observing and Measuring Visual Double Stars (ed. Argyle R.W. pub. Springer)
Washington Double Star Catalogue (Mason, B.D., Wycoff, G.L. & Hartkopf, W.I.):
http://ad.usno.navy.mil/proj/WDS
Sixth Catalogue of Orbits of Visual Binary Stars (Hartkopf, W.I., Mason, B.D. & Worley, C.E.):
Fourth Catalogue of Interferometric Measurements of Binary Stars:
http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/int4
Astroplanner:
Table 1: Measurements
| Pair | Comp | RA | Dec | Va | Vb | PA (o) | +/- | Sep (‘’) | +/- | Epoch
2017 + |
N | Obs |
| STTA 254 | AB | 00013 | +6021 | 7.40 | 8.33 | 89.2 | 0.1 | 58.0 | 0.2 | 0.038 | 20 | WST |
| STF 3053 | AB | 00026 | +6606 | 5.96 | 7.17 | 69.6 | 0.1 | 15.2 | 0.1 | 0.665 | 20 | WST |
| STTA 1 | AB | 00141 | +7601 | 7.39 | 7.81 | 103.3 | 0.1 | 73.4 | 0.3 | 0.835 | 20 | WST |
| H 5 17 | AB | 00369 | +3343 | 4.36 | 7.08 | 172.5 | 0.1 | 35.7 | 0.2 | 0.717 | 20 | WST |
| HJ 1986 | AB | 00396 | +8445 | 7.96 | 8.50 | 68.7 | 0.1 | 40.5 | 0.2 | 0.835 | 20 | WST |
| STTA 5 | 00400 | +7652 | 6.86 | 8.78 | 141.9 | 0.1 | 118.3 | 0.4 | 0.038 | 20 | WST | |
| H 5 18 | AD | 00405 | +5632 | 2.35 | 8.98 | 282.4 | 0.1 | 70.6 | 0.3 | 0.038 | 20 | WST |
| STFA 1 | AB
|
00464 | +3057 | 7.25 | 7.43 | 46.0 | 0.1 | 48.0 | 0.3 | 0.717 | 20 | WST |
| H 582 | AB | 00474 | +5106 | 7.97 | 8.35 | 75.0 | 0.1 | 57.2 | 0.2 | 0.665 | 20 | WST |
| HJ 2028 | AB | 01166 | +7402 | 7.06 | 7.88 | 204.1 | 0.3 | 61.5 | 0.1 | 0.665 | 20 | WST |
| H 5 12 | AB | 01579 | +2336 | 4.80 | 6.65 | 47.9 | 0.1 | 37.2 | 0.2 | 0.859 | 20 | WST |
| STF 222 | AB | 02109 | +3902 | 6.05 | 6.71 | 36.0 | 0.1 | 16.6 | 0.2 | 0.717 | 20 | WST |
| S 405 | AB | 02128 | +7941 | 6.47 | 7.15 | 277.3 | 0.1 | 55.6 | 0.3 | 0.835 | 20 | WST |
| STF 239 | AB | 02174 | +2845 | 7.09 | 7.83 | 211.6 | 0.1 | 13.6 | 0.1 | 0.878 | 20 | WST |
| STTA 26 | AB | 02197 | +6002 | 6.95 | 7.30 | 201.0 | 0.1 | 62.7 | 0.3 | 0.717 | 20 | WST |
| STTA 27 | AB | 02268 | +1034 | 6.72 | 8.31 | 31.2 | 0.1 | 73.8 | 0.3 | 0.900 | 20 | WST |
| CTT3 | AB | 02359 | +6338 | 7.78 | 8.30 | 88.0 | 0.1 | 88.1 | 0.4 | 0.717 | 20 | WST |
| STFA 5 | AB | 02370 | +2439 | 6.50 | 7.02 | 275.1 | 0.1 | 37.7 | 0.2 | 0.900 | 20 | WST |
| STTA 28 | AB | 02390 | +6235 | 6.65 | 7.56 | 147.0 | 0.1 | 67.8 | 0.3 | 0.717 | 20 | WST |
| HJ 1123 | AB | 02420 | +4248 | 8.39 | 8.46 | 249.7 | 0.1 | 20.4 | 0.2 | 0.808 | 20 | WST |
| STT 44 | AC | 02422 | +4242 | 8.47 | 8.32 | 289.9 | 0.1 | 87.2 | 0.3 | 0.808 | 20 | WST |
| STF 292 | AB | 02425 | +4016 | 7.56 | 8.23 | 212.3 | 0.1 | 23.5 | 0.2 | 0.786 | 20 | WST |
| STF 307 | AB | 02507 | +5554 | 3.76 | 8.50 | 300.5 | 0.2 | 30.4 | 0.3 | 0.808 | 20 | WST |
| STTA 31 | AB | 03009 | +5940 | 7.33 | 8.03 | 230.8 | 0.1 | 74.2 | 0.3 | 0.717 | 20 | WST |
| STTA 33 | AC | 03221 | +6244 | 7.73 | 7.80 | 111.9 | 0.1 | 114.8 | 0.4 | 0.134 | 20 | WST |
| STFA 7 | AB | 03311 | +2744 | 7.41 | 7.81 | 233.9 | 0.1 | 44.1 | 0.2 | 0.900 | 20 | WST |
| STT 57 | AC | 03334 | +2322 | 7.17 | 7.67 | 33.1 | 0.1 | 68.7 | 0.1 | 0.900 | 20 | WST |
| STF 396 | AB | 03335 | +5846 | 6.43 | 7.68 | 246.0 | 0.1 | 20.7 | 0.2 | 0.134 | 20 | WST |
| S 430 | AB | 03383 | +4448 | 7.21 | 7.53 | 96.0 | 0.1 | 41.0 | 0.2 | 0.808 | 20 | WST |
| STTA 36 | A BC | 03400 | +6352 | 6.92 | 8.27 | 71.2 | 0.2 | 45.8 | 0.2 | 0.134 | 20 | WST |
| STF 434 | AB | 03440 | +3822 | 7.80 | 8.28 | 83.0 | 0.1 | 34.0 | 0.2 | 0.808 | 20 | WST |
| S 437 | AB C | 03463 | +2411 | 8.13 | 7.70 | 308.2 | 0.2 | 38.8 | 0.2 | 0.900 | 20 | WST |
| STFA 8 | BC | 03475 | +2406 | 6.27 | 8.22 | 345.0 | 0.1 | 86.2 | 0.1 | 0.900 | 20 | WST |
| S 436 | 03493 | +5707 | 6.46 | 7.17 | 76.0 | 0.1 | 58.3 | 0.3 | 0.227 | 20 | WST | |
| STTA 40 | AB | 03494 | +2423 | 6.58 | 7.53 | 309.0 | 0.1 | 87.4 | 0.1 | 0.900 | 20 | WST |
| STF 485 | AE | 04078 | +6220 | 6.91 | 6.94 | 305.2 | 0.1 | 17.9 | 0.2 | 0.227 | 20 | WST |
| STTA 45 | AB | 04155 | +0611 | 6.38 | 7.01 | 316.0 | 0.1 | 63.7 | 0.1 | 0.900 | 20 | WST |
| STTA 44 | AB | 04173 | +4613 | 7.12 | 7.99 | 321.3 | 0.1 | 58.6 | 0.2 | 0.808 | 20 | WST |
| SHJ 40 | AB | 04204 | +2721 | 5.08 | 7.51 | 258.8 | 0.1 | 48.7 | 0.1 | 0.900 | 20 | WST |
| S 445 | AB | 04210 | +5015 | 7.31 | 8.19 | 328.0 | 0.1 | 71.0 | 0.3 | 0.808 | 20 | WST |
| STTA 46 | AB | 04211 | +5532 | 7.68 | 7.95 | 159.8 | 0.1 | 99.9 | 0.1 | 0.227 | 20 | WST |
| STF 534 | AB | 04240 | +2418 | 6.36 | 7.94 | 291.0 | 0.1 | 29.4 | 0.2 | 0.900 | 20 | WST |
| STF 533 | AB | 04244 | +3419 | 7.30 | 8.49 | 61.2 | 0.1 | 20.2 | 0.2 | 0.835 | 20 | WST |
| STF 548 | 04289 | +3022 | 6.44 | 8.03 | 35.0 | 0.1 | 14.2 | 0.2 | 0.900 | 20 | WST | |
| WEB 2 | AD | 04327 | +5958 | 5.72 | 8.45 | 36.0 | 0.1 | 54.6 | 0.3 | 0.134 | 20 | WST |
| S 451 | 04363 | +4722 | 7.59 | 7.91 | 202.0 | 0.1 | 55.7 | 0.3 | 0.835 | 20 | WST | |
| STTA 53 | AB | 04374 | +0034 | 7.55 | 7.57 | 352.0 | 0.1 | 78.8 | 0.3 | 0.900 | 20 | WST |
| OPI 5 | AC | 04382 | +7128 | 7.67 | 8.50 | 279.3 | 0.1 | 111.9 | 0.4 | 0.227 | 20 | WST |
| S 455 | AB | 04422 | +2257 | 4.24 | 7.02 | 213.8 | 0.1 | 62.5 | 0.1 | 0.900 | 20 | WST |
| S 459 | AB | 05034 | +6027 | 4.12 | 7.44 | 209.1 | 0.1 | 84.2 | 0.3 | 0.227 | 20 | WST |
| STF 618 | AB | 05036 | +6305 | 7.68 | 7.98 | 211.0 | 0.1 | 33.3 | 0.3 | 0.230 | 20 | WST |
| STFA 13 | AB | 05061 | +5858 | 5.20 | 6.21 | 9.5 | 0.2 | 177.7 | 0.6 | 0.230 | 20 | WST |
| STTA 61 | AB | 05096 | +2947 | 6.72 | 8.49 | 245.0 | 0.1 | 68.4 | 0.3 | 0.347 | 20 | WST |
| STF 698 | AB | 05252 | +3451 | 6.65 | 8.33 | 347.01 | 0.1 | 31.2 | 0.1 | 0.367 | 20 | WST |
| STFA 63 | 05308 | +3950 | 6.49 | 7.69 | 277.0 | 0.1 | 75.2 | 0.3 | 0.367 | 20 | WST | |
| STTA 72 | AC | 06247 | +5940 | 7.58 | 7.58 | 322.6 | 0.1 | 134.5 | 0.5 | 0.120 | 20 | WST |
| S 514 | AC | 06268 | +5825 | 5.38 | 7.92 | 272.0 | 0.1 | 94.9 | 0.4 | 0.120 | 20 | WST |
| SHJ 70 | AB | 06278 | +2047 | 6.65 | 8.18 | 201.9 | 0.1 | 25.0 | 0.1 | 0.271 | 20 | WST |
| STF 924 | AB | 06323 | +1747 | 6.31 | 6.88 | 211.5 | 0.2 | 20.7 | 0.3 | 0.271 | 20 | WST |
| S 524 | AB | 06341 | +2207 | 7.17 | 7.41 | 244.3 | 0.2 | 53.0 | 0.2 | 0.295 | 20 | WST |
| STF 994 | AB | 06595 | +3706 | 7.88 | 8.14 | 54.8 | 0.1 | 26.4 | 0.2 | 0.367 | 20 | WST |
| HJL 1046 | AB | 07097 | +6045 | 6.76 | 7.95 | 164.0 | 0.1 | 184.0 | 0.6 | 0.120 | 20 | WST |
| ES 2624 | 07219 | +4614 | 8.12 | 8.25 | 87.8 | 0.1 | 80.9 | 0.4 | 0.120 | 20 | WST | |
| STF 1065 | 07223 | +5009 | 7.51 | 7.67 | 254.6 | 0.2 | 14.1 | 0.2 | 0.120 | 20 | WST | |
| STF 1062 | AB | 07229 | +5517 | 5.76 | 6.71 | 315.2 | 0.3 | 15.0 | 0.2 | 0.131 | 20 | WST |
| STTA 84 | AB | 07254 | +5633 | 7.72 | 7.75 | 322.2 | 0.1 | 112.8 | 0.4 | 0.131 | 20 | WST |
| STF 1090 | AB | 07265 | +1831 | 7.27 | 8.17 | 98.0 | 0.1 | 60.8 | 0.3 | 0.295 | 20 | WST |
| STF 1051 | AC | 07266 | +7305 | 7.60 | 7.79 | 84.0 | 0.1 | 31.7 | 0.2 | 0.230 | 20 | WST |
| STTA 87 | 07389 | +4229 | 7.59 | 7.78 | 357.0 | 0.1 | 61.4 | 0.2 | 0.131 | 20 | WST | |
| STF 1122 | 07459 | +6509 | 7.78 | 7.80 | 184.9 | 0.1 | 14.4 | 0.2 | 0.230 | 20 | WST | |
| SHJ 86 | AB | 08025 | +6305 | 6.15 | 7.53 | 80.0 | 0.1 | 50.7 | 0.2 | 0.230 | 20 | WST |
| STTA 91 | AB | 08195 | +3503 | 7.26 | 8.36 | 209.5 | 0.1 | 94.7 | 0.3 | 0.131 | 20 | WST |
| ES 2631 | 09056 | +5018 | 7.84 | 8.47 | 259.0 | 0.1 | 78.9 | 0.4 | 0.268 | 20 | WST | |
| STF 1315 | 09128 | +6141 | 7.33 | 7.65 | 26.9 | 0.2 | 24.9 | 0.1 | 0.268 | 20 | WST | |
| STF 1321 | AB | 09144 | +5241 | 7.79 | 7.88 | 97.1 | 0.1 | 17.1 | 0.3 | 0.268 | 20 | WST |
| S 598 | AB | 09287 | +4536 | 5.50 | 7.80 | 159.7 | 0.2 | 69.7 | 0.3 | 0.268 | 20 | WST |
| STF 1369 | AB | 09354 | +3958 | 6.98 | 7.98 | 149.0 | 0.1 | 25.0 | 0.1 | 0.134 | 20 | WST |
| STF 1369 | AC | 09354 | +3958 | 6.98 | 8.42 | 322.9 | 0.1 | 116.3 | 0.4 | 0.134 | 20 | WST |
| STF 1369 | AC | 09354 | +3958 | 6.98 | 8.42 | 322.9 | 0.1 | 116.3 | 0.4 | 0.134 | 20 | WST |
| STF 1369 | BC | 09354 | +3958 | 7.98 | 8.42 | 324.0 | 0.1 | 141.6 | 0.5 | 0.134 | 20 | WST |
| STF 1399 | 09570 | +1946 | 7.65 | 8.36 | 175.9 | 0.1 | 30.2 | 0.2 | 0.246 | 20 | WST | |
| STF 1415 | AB | 10178 | +7104 | 6.65 | 7.27 | 168.0 | 0.1 | 16.6 | 0.2 | 0.268 | 20 | WST |
| HZG8 | AC | 11045 | +3814 | 6.04 | 7.56 | 83.1 | 0.2 | 150.1 | 0.5 | 0.309 | 20 | WST |
| S 621 | AB | 11113 | +6601 | 8.31 | 8.34 | 53.4 | 0.1 | 102.4 | 0.5 | 0.309 | 20 | WST |
| S 621 | AC | 11113 | +6601 | 8.31 | 8.49 | 314.0 | 0.1 | 166.7 | 0.6 | 0.309 | 20 | WST |
| STF 1516 | AB | 11152 | +7329 | 7.77 | 8.23 | 102.9 | 0.1 | 67.6 | 0.3 | 0.364 | 20 | WST |
| STF 1540 | AB | 11268 | +0301 | 6.55 | 7.50 | 149.1 | 0.1 | 28.1 | 0.2 | 0.246 | 20 | WST |
| STFA 19 | AB | 11279 | +0251 | 5.05 | 7.47 | 182.0 | 0.1 | 88.1 | 0.3 | 0.246 | 20 | WST |
| STF 1565 | 11396 | +1900 | 7.26 | 8.41 | 303.9 | 0.1 | 22.2 | 0.1 | 0.246 | 20 | WST | |
| STTA 112 | AB | 11545 | +1925 | 8.28 | 8.49 | 35.1 | 0.1 | 73.9 | 0.3 | 0.246 | 20 | WST |
| SHJ 136 | 12110 | +8143 | 6.15 | 8.25 | 73.7 | 0.1 | 71.9 | 0.3 | 0.235 | 20 | WST | |
| STF 1625 | AB | 12162 | +8008 | 7.24 | 7.78 | 217.0 | 0.1 | 14.2 | 0.2 | 0.235 | 20 | WST |
| STF 1694 | AB | 12492 | +8325 | 5.29 | 5.74 | 324.1 | 0.1 | 21.8 | 0.2 | 0.235 | 20 | WST |
| STTA 123 | AB | 13271 | +6444 | 6.65 | 7.03 | 145.1 | 0.1 | 69.2 | 0.3 | 0.402 | 20 | WST |
| STTA 127 | AB | 13510 | +6819 | 6.53 | 8.32 | 61.8 | 0.1 | 87.4 | 0.1 | 0.402 | 20 | WST |
| STF 1821 | AB | 14135 | +5147 | 4.53 | 6.62 | 235.8 | 0.1 | 13.1 | 0.2 | 0.298 | 20 | WST |
| STFA 26 | AB | 14162 | +5122 | 4.76 | 7.39 | 32.0 | 0.1 | 329.0 | 0.2 | 0.298 | 20 | WST |
| STF 1850 | 14286 | +2817 | 7.11 | 7.56 | 261.5 | 0.1 | 25.1 | 0.1 | 0.298 | 20 | WST | |
| SHJ 191 | 14596 | +5352 | 6.86 | 7.57 | 341.0 | 0.1 | 40.0 | 0.1 | 0.298 | 20 | WST | |
| STF 1972 | AB | 15292 | +8027 | 6.64 | 7.30 | 80.0 | 0.1 | 31.8 | 0.2 | 0.835 | 20 | WST |
| STF 1964 | AC | 15382 | +3615 | 8.07 | 8.06 | 86.0 | 0.1 | 15.0 | 0.1 | 0.298 | 20 | WST |
| STF 2010 | AB | 16081 | +1703 | 5.10 | 6.21 | 12.0 | 0.1 | 27.1 | 0.2 | 0.386 | 20 | WST |
| SHJ 233 | 16315 | +0818 | 7.07 | 8.28 | 70.8 | 0.1 | 59.2 | 0.3 | 0.402 | 20 | WST | |
| STFA 30 | AC | 16362 | +5255 | 5.38 | 5.50 | 193.3 | 0.1 | 90.0 | 0.3 | 0.402 | 20 | WST |
| STFA 30 | BC | 16362 | +5255 | 6.42 | 5.50 | 194.0 | 0.1 | 90.1 | 0.4 | 0.402 | 20 | WST |
| STF 2079 | 16396 | +2300 | 7.56 | 8.13 | 90.6 | 0.1 | 16.7 | 0.2 | 0.386 | 20 | WST | |
| STFA 31 | AB | 16406 | +0413 | 5.76 | 6.92 | 229.0 | 0.1 | 69.3 | 0.4 | 0.400 | 20 | WST |
| STTA 149 | 16435 | +2043 | 7.24 | 8.38 | 134.7 | 0.1 | 97.4 | 0.3 | 0.386 | 20 | WST | |
| S 689 | AB | 17246 | +3913 | 7.48 | 8.44 | 197.0 | 0.1 | 89.2 | 0.4 | 0.400 | 20 | WST |
| STFA 35 | 17322 | +5511 | 4.87 | 4.90 | 311.2 | 0.2 | 62.1 | 0.2 | 0.402 | 20 | WST | |
| STF 2241 | AB | 17419 | +7209 | 4.60 | 5.59 | 15.5 | 0.1 | 30.5 | 0.2 | 0.402 | 20 | WST |
| STTA 163 | AB | 17562 | +6237 | 7.77 | 7.59 | 53.0 | 0.1 | 54.3 | 0.3 | 0.416 | 20 | WST |
| STF 2259 | 17590 | +3003 | 7.27 | 8.44 | 277.0 | 0.1 | 19.5 | 0.2 | 0.400 | 20 | WST | |
| STF 2273 | AB | 17592 | +6409 | 7.31 | 7.63 | 283.3 | 0.2 | 22.0 | 0.2 | 0.416 | 20 | WST |
| STF 2308 | AB | 18002 | +8000 | 5.70 | 6.00 | 230.2 | 0.1 | 18.7 | 0.3 | 0.416 | 20 | WST |
| STF 2278 | AB | 18029 | +5626 | 7.78 | 8.14 | 29.0 | 0.1 | 36.3 | 0.1 | 0.441 | 20 | WST |
| STF 2278 | AC | 18029 | +5626 | 7.78 | 8.53 | 38.0 | 0.1 | 34.3 | 0.2 | 0.441 | 20 | WST |
| H 5 93 | 18130 | +2815 | 8.16 | 8.28 | 136.0 | 0.1 | 54.7 | 0.2 | 0.400 | 20 | WST | |
| STF 2323 | AC | 18239 | +5848 | 5.06 | 7.95 | 19.0 | 0.1 | 89.1 | 0.3 | 0.441 | 20 | WST |
| STF 2323 | BC | 18239 | +5848 | 8.07 | 7.95 | 19.5 | 0.1 | 86.5 | 0.3 | 0.441 | 20 | WST |
| STF 2372 | AB | 18421 | +3445 | 6.45 | 7.73 | 82.0 | 0.1 | 25.0 | 0.1 | 0.517 | 20 | WST |
| STFA 38 | AD | 18448 | +3736 | 4.34 | 5.62 | 150.0 | 0.1 | 43.7 | 0.1 | 0.517 | 20 | WST |
| STFA 39 | AB | 18501 | +3322 | 3.63 | 6.69 | 148.8 | 0.1 | 45.7 | 0.3 | 0.517 | 20 | WST |
| STTA 176 | AB | 18545 | +0154 | 7.45 | 7.51 | 111.7 | 0.1 | 94.0 | 0.4 | 0.649 | 20 | WST |
| SHJ 282 | AC | 18549 | +3358 | 6.14 | 7.60 | 349.0 | 0.1 | 45.6 | 0.3 | 0.517 | 20 | WST |
| STF 2420 | AB | 18512 | +5923 | 4.77 | 8.26 | 317.0 | 0.1 | 37.5 | 0.1 | 0.441 | 20 | WST |
| STF 2474 | AB | 19091 | +3436 | 6.78 | 7.88 | 263.7 | 0.1 | 15.5 | 0.2 | 0.517 | 20 | WST |
| STTA 177 | AC | 19126 | +1651 | 7.11 | 8.02 | 276.0 | 0.1 | 98.4 | 0.4 | 0.654 | 20 | WST |
| STTA 178 | 19153 | +1505 | 5.69 | 7.64 | 267.9 | 0.1 | 89.6 | 0.3 | 0.649 | 20 | WST | |
| STTA 181 | AB | 19201 | +2639 | 7.39 | 7.50 | 359.0 | 0.1 | 62.8 | 0.3 | 0.517 | 20 | WST |
| STFA 43 | AB | 19307 | +2758 | 3.19 | 4.68 | 54.0 | 0.1 | 35.0 | 0.2 | 0.550 | 20 | WST |
| STF 2549 | AD | 19312 | +6319 | 8.34 | 8.03 | 269.7 | 0.3 | 55.6 | 0.3 | 0.441 | 20 | WST |
| STFA 44 | 19332 | +6010 | 6.47 | 8.19 | 287.0 | 0.1 | 74.9 | 0.1 | 0.441 | 20 | WST | |
| ARN 82 | AB | 19364 | +3541 | 8.10 | 8.43 | 34.1 | 0.1 | 43.5 | 0.2 | 0.564 | 20 | WST |
| H 626 | AB | 19373 | +1628 | 5.77 | 8.35 | 82.2 | 0.1 | 87.4 | 0.1 | 0.654 | 20 | WST |
| STFA 46 | AB | 19418 | +5032 | 6.00 | 6.23 | 132.5 | 0.1 | 39.9 | 0.2 | 0.564 | 20 | WST |
| STTA 188 | AB | 19428 | +3741 | 7.71 | 7.98 | 121.0 | 0.1 | 61.1 | 0.2 | 0.564 | 20 | WST |
| H 5 137 | AB | 19459 | +3501 | 6.22 | 8.18 | 24.0 | 0.1 | 37.7 | 0.2 | 0.564 | 20 | WST |
| STFA 48 | AB | 19534 | +2020 | 7.14 | 7.34 | 147.0 | 0.1 | 41.8 | 0.2 | 0.649 | 20 | WST |
| AC 16 | AC | 19579 | +2715 | 7.81 | 7.97 | 136.0 | 0.1 | 92.3 | 0.1 | 0.649 | 20 | WST |
| STTA 200 | AB | 20023 | +6438 | 6.36 | 8.06 | 332.3 | 0.2 | 99.3 | 0.4 | 0.441 | 20 | WST |
| ES 25 | AF | 20060 | +3546 | 7.89 | 6.78 | 329.0 | 0.1 | 95.7 | 0.4 | 0.578 | 20 | WST |
| SHJ 314 | AF | 20060 | +3547 | 6.78 | 7.30 | 28.0 | 0.1 | 36.2 | 0.1 | 0.578 | 20 | WST |
| WEB 12 | AB | 20078 | +1950 | 8.36 | 8.37 | 77.0 | 0.1 | 40.4 | 0.2 | 0.654 | 20 | WST |
| HJ 606 | AB | 20084 | +3808 | 7.98 | 8.12 | 228.5 | 0.1 | 44.0 | 0.2 | 0.578 | 20 | WST |
| STF 2637 | AC | 20099 | +2055 | 6.56 | 7.52 | 221.5 | 0.1 | 91.8 | 0.4 | 0.654 | 20 | WST |
| S 738 | AB | 20106 | +3338 | 7.76 | 8.43 | 105.5 | 0.1 | 41.3 | 0.3 | 0.578 | 20 | WST |
| STF 2664 | AB | 20196 | +1300 | 8.07 | 8.34 | 321.2 | 0.1 | 27.1 | 0.2 | 0.654 | 20 | WST |
| STTA 207 | AC | 20229 | +4259 | 6.41 | 8.01 | 64.6 | 0.1 | 85.8 | 0.3 | 0.578 | 20 | WST |
| STF 2687 | AB | 20264 | +5638 | 6.37 | 8.31 | 117.5 | 0.1 | 25.5 | 0.2 | 0.578 | 20 | WST |
| STF 2691 | AB | 20297 | +3808 | 8.14 | 8.45 | 31.0 | 0.1 | 17.0 | 0.2 | 0.578 | 20 | WST |
| STF 2690 | A BC | 20312 | +1116 | 7.12 | 7.39 | 255.8 | 0.1 | 17.7 | 0.2 | 0.654 | 20 | WST |
| STF 2703 | AB | 20368 | +1444 | 8.35 | 8.42 | 289.0 | 0.1 | 25.0 | 0.1 | 0.654 | 20 | WST |
| STTA 211 | AB | 20493 | +5845 | 6.85 | 7.88 | 268.0 | 0.1 | 95.0 | 0.3 | 0.835 | 20 | WST |
| STF 2758 | AB | 21069 | +3845 | 5.20 | 6.05 | 152.4 | 0.2 | 31.8 | 0.2 | 0.578 | 20 | WST |
| BU 69 | AC | 21026 | +2141 | 8.35 | 8.02 | 241.0 | 0.1 | 74.6 | 0.3 | 0.649 | 20 | WST |
| STF 2769 | AB | 21105 | +2227 | 6.65 | 7.42 | 299.0 | 0.1 | 18.7 | 0.1 | 0.649 | 20WST | WST |
| STFA 56 | AB | 21377 | +0637 | 6.18 | 7.50 | 348.0 | 0.1 | 39.0 | 0.2 | 0.788 | 20 | WST |
| GUI 36 | CD | 21390 | +5729 | 7.48 | 7.53 | 324.3 | 0.1 | 30.7 | 0.2 | 0.835 | 20 | WST |
| STF 2816 | AD | 21390 | +5729 | 5.73 | 7.53 | 338.9 | 0.1 | 20.4 | 0.2 | 0.848 | 20 | WST |
| STT 447 | AE | 21395 | +4144 | 7.67 | 8.48 | 44.3 | 0.1 | 28.9 | 0.2 | 0.578 | 20 | WST |
| STTA 222 | AB | 21441 | +0709 | 7.49 | 8.47 | 257.4 | 0.1 | 87.4 | 0.1 | 0.788 | 20 | WST |
| ES 382 | AC | 21509 | +3240 | 8.28 | 8.42 | 322.0 | 0.1 | 58.3 | 0.4 | 0.788 | 20 | WST |
| STF 2840 | AB | 21520 | +5548 | 5.64 | 6.42 | 196.3 | 0.1 | 18.0 | 0.2 | 0.846 | 20 | WST |
| S 800 | AB | 21538 | +6237 | 7.07 | 7.91 | 145.0 | 0.1 | 62.5 | 0.1 | 0.846 | 20 | WST |
| STF 2841 | A BC | 21543 | +1943 | 6.45 | 7.99 | 108.0 | 0.1 | 22.2 | 0.2 | 0.786 | 20 | WST |
| ARY 45 | AB | 22083 | +6959 | 7.86 | 8.11 | 206.9 | 0.1 | 66.6 | 0.2 | 0.846 | 20 | WST |
| STF 2872 | A BC | 22086 | +5917 | 7.14 | 7.98 | 315.0 | 0.1 | 22.4 | 0.1 | 0.846 | 20 | WST |
| STF 2893 | AB | 22129 | +7318 | 6.19 | 7.91 | 347.2 | 0.1 | 29.2 | 0.2 | 0.846 | 20 | WST |
| STTA 234 | AC | 22269 | +4943 | 8.15 | 8.49 | 133.7 | 0.1 | 36.3 | 0.1 | 0.657 | 20 | WST |
| STFA 58 | AC | 22292 | +5825 | 4.21 | 6.11 | 190.8 | 0.1 | 40.6 | 0.2 | 0.846 | 20 | WST |
| STF 2922 | AB | 22359 | +3938 | 5.66 | 6.29 | 185.0 | 0.1 | 22.4 | 0.1 | 0.657 | 20 | WST |
| STTA 236 | AB D | 22361 | +7253 | 7.56 | 8.42 | 136.0 | 0.1 | 42.7 | 0.2 | 0.848 | 20 | WST |
| BU 277 | AB D | 22395 | +4123 | 8.26 | 8.50 | 47.0 | 0.1 | 78.1 | 0.3 | 0.657 | 20 | WST |
| HJ 1823 | AC | 22518 | +4119 | 7.06 | 8.11 | 337.5 | 0.1 | 81.6 | 0.3 | 0.657 | 20 | WST |
| STTA 238 | AB | 22527 | +6759 | 7.02 | 7.58 | 280.0 | 0.1 | 69.2 | 0.3 | 0.848 | 20 | WST |
| STTA 241 | AB | 22586 | +1203 | 8.28 | 8.37 | 160.3 | 0.1 | 84.9 | 0.4 | 0.788 | 20 | WST |
| S 825 | AB | 23100 | +3651 | 7.78 | 8.26 | 318.0 | 0.1 | 67.1 | 0.3 | 0.717 | 20 | WST |
| STF 2985 | AB | 23100 | +4758 | 7.21 | 8.02 | 256.2 | 0.1 | 15.4 | 0.2 | 0.717 | 20 | WST |
| STTA 245 | AB C | 23260 | +2742 | 7.92 | 8.50 | 194.8 | 0.1 | 62.5 | 0.1 | 0.788 | 20 | WST |
| SHJ 355 | AC | 23300 | +5833 | 4.87 | 7.23 | 268.6 | 0.2 | 74.9 | 0.1 | 0.717 | 20 | WST |
| STF 3041 | A BC | 23479 | +1703 | 8.35 | 8.36 | 358.0 | 0.1 | 60.5 | 0.3 | 0.786 | 20 | WST |
| STT 507 | AC | 23487 | +6453 | 6.76 | 8.44 | 349.2 | 0.1 | 50.0 | 0.1 | 0.717 | 20 | WST |
| STF 3044 | AB | 23530 | +1155 | 7.27 | 7.91 | 282.5 | 0.1 | 18.7 | 0.1 | 0.788 | 20 | WST |
Table 2: Residuals from Known Orbits
| Pair | ADS (HIP) | Residual (O-C) PA (0) | Residual
(O-C) Sep (‘’) |
Orbit | Period (yrs)
|
Date | Grade |
| STF 1321 AB | 7251 | -1.4 | +0.3 | Chang | 975 | 1972 | 4 |
| STF 1540 AB | (55846) | +2.3 | -0.5 | Hopmann | 32, 000 | 1960 | 5 |
| STF 1821 AB | 7173 | +0.5 | -0.7 | Kiyaeva | 6, 101 | 2006 | 5 |
| STF 1821 AB | 7173 | +1.0 | -1.1 | Kiyaeva | 6, 675 | 2006 | 5 |
| STF 2241 AB | 10759 | -1.3 | +0.9 | Kiselev | 10, 000 | 2009 | 5 |
| STF 2308 AB | 11061 | -1.1 | -0.1 | Kiselev | 18, 000 | 1996 | 5 |
| STFA 46 AB | 12815 | -0.6 | +0.1 | Marcy | 13, 513 | 1999 | 4 |
| STF 2758 AB | 14636 | +0.3 | +0.1 | PKO | 678 | 2006 | 4 |
| S 825 AB | 16558 | -0.7 | +0.3 | Kiselev | 110, 000 | 2009 | 5 |
| S 825 AB | 16558 | -1.8 | +0.3 | Kiselev | 98,000 | 2009 | 5 |
| S 825 AB | 16558 | -0.8 | -0.1 | Kiselev | 98,000 | 2009 | 5 |
(All Residuals: Observed – latest Catalogue measurement)
Table 3: Residuals from Fourth Catalogue of Interferometric Measurements
| Pair | ADS | HIP (TYC) | Epoch (catalogue) | Residual
PA (0) |
Residual
Sep (‘’) |
| STTA 254 AB | BDS 12693 | 99 | 1991.61 | -0.2 | +0.2 |
| STTA 254 AB | BDS 12693 | 99 | 1991.61 | -0.2 | +0.2 |
| STF 3053 AB | 207 | 2003.770 | -0.6 | +0.2 | |
| STTA 1 AB | 1124 | 1991.67 | -0.2 | -0.5 | |
| H 5 17 AB | 513 | 2912 | 2003.804 | -0.9 | -0.2 |
| HJ 1986 AB | (4619 00293) | 1991.69 | +1.8 | +0.1 | |
| STFA 1 AB | 639 | 3617 | 2003.804 | -0.3 | +0.9 |
| STF 3053 AB | 207 | 2003.770 | -0.6 | +0.2 | |
| STTA 5 | BD+76 | 3145 | 1991.73 | -0.1 | +0.6 |
| H 5 18 AD | 561 | 3179 | 1991.57 | +0.5 | +1.5 |
| H 582 AB | BDS 417 | 3698 | 1991.76 | -0.1 | +1.8 |
| HJ 2028 AB | 5950 | 1991.67 | +0.4 | +0.1 | |
| H 5 12 AB | 1563 | (1757 01964) | 2993.918 | +0.8 | +0.5 |
| STF 222 AB | 1683 | 10176 | 2003.875 | +0.1 | +0.1 |
| S 405 | 10309 | 1991.73 | +0.5 | -0.1 | |
| STF 239 AB | 1752 | 10680 | 1991.85 | +0.1 | -0.2 |
| STTA 26 AB | 10856 | 1991.56 | +0.7 | -0.7 | |
| STTA 27 AB | 11390 | 1991.78 | -0.7 | +0.2 | |
| CTT3 AB | 12081 | 1991.66 | +0.1 | +0.6 | |
| STFA 5 AB | 1982 | 12189 | 1991.70 | +0.6 | -0.5 |
| STTA 28 AB | 16218 | 1991.56 | -0.4 | +0.0 | |
| HJ 1123 AB | 2048 | (2853 00022) | 1991.79 | +1.1 | +0.3 |
| STT 44 AC | 2052 | 12619 | 1991.73 | -0.1 | +0.9 |
| STF 292 AB | 2057 | 12648 | 1991.70 | +0.8 | +0.5 |
| STF 307 AB | |||||
| STTA 31 AB | 14049 | 1991.71 | +0.6 | +0.6 | |
| STTA 33 AC | 15686 | 1991.63 | +0.8 | -1.4 | |
| STFA 7 AB | 16386 | 2004.115 | +0.3 | +0.8 | |
| STT 57 AC | 2605 | (1798 00480) | 1991.57 | -0.7 | -1.0 |
| STF 396 AB | 2592 | 16587 | 2004.115 | +1.7 | +0.6 |
| S 430 AB | 16972 | 1991.64 | +0.1 | -0.1 | |
| STTA 36 A BC | 2650 | 17118 | 1991.66 | +0.4 | -0.1 |
| STF 434 AB | 2717 | 17424 | 1991.64 | -0.2 | +1.0 |
| S 437 AB C | 2755 | (1800 01961) | 1991.64 | +0.5 | -0.2 |
| STFA 8 BC | (1800 02201) | 1991.68 | +0.7 | +0.8 | |
| S 436 | 17858 | 1991.70 | +0.1 | -0.1 | |
| STTA 40 AB | 17862 | 1991.57 | +0.1 | +0.5 | |
| STF 485 AE | 2984 | 19272 | 2008.0479 | +0.4 | +0.1 |
| STTA 45 AB | 3085 | 19859 | 1991.63 | +0.3 | -0.7 |
| STTA 44 AB | 20000 | 1991.55 | -1.3 | +0.3 | |
| SHJ 40 AB | 3137 | 20250 | 1991.60 | +3.3 | -0.4 |
| S 445 AB | 20296 | 1991.56 | 0.0 | -0.8 | |
| STTA 46 AB | 20306 | 1991.42 | 0.0 | +0.3 | |
| STF 534 AB | 3179 | 20533 | 2002.901 | +0.7 | +0.7 |
| STF 533 AB | 3185 | 20570 | 2002.977 | -0.1 | +0.6 |
| STF 548 AB | 3243 | 20904 | 2012.6779 | -0.9 | -0.3 |
| S 451 | 21437 | 1991.60 | +0.5 | -0.4 | |
| STTA 53 AB | 21534 | 1991.58 | -1.0 | +0.8 | |
| OPI 5 AC | 21578 | 1991.7 | +0.1 | +0.1 | |
| S 455 AB | 21881 | 1991.56 | +0.4 | -0.4 | |
| S 459 AB | 3615 | 23527 | 1991.64 | 0.0 | +1.1 |
| STF 618 AB | 23532 | 1991.57 | -0.4 | +0.5 | |
| STFA 13 AB | 23734 | 1991.7 | +0.5 | -1.0 | |
| STTA 61 AB | 24016 | 1991.65 | +0.5 | -0.5 | |
| STF 698 AB | 4000 | 25343 | 2002.884 | -0.2 | 0.0 |
| STFA 63 | 25810 | 1991.66 | +0.8 | -0.7 | |
| STTA 72 AC | (3776 01181) | 1991.63 | -0.2 | +0.3 | |
| S 514 | 5036 | 30679 | 1991.67 | 0.0 | -0.6 |
| SHJ 70 AB | 5080 | 30757 | 2002.901 | -0.5 | +0.0 |
| STF 924 AB | 5166 | 31158 | 2002.91 | +0.6 | +1.0 |
| S 524 AB | 31323 | 1991.85 | +0.2 | -0.5 | |
| STF 994 AB | 5642 | 33649 | 1991.72 | -0.4 | -0.4 |
| HJL 1046 | 5810 | 34572 | 1991.68 | -1.3 | +1.8 |
| ES 2624 | 35684 | 1991.85 | +0.6 | -0.1 | |
| STF 1065 | 6004 | 35731 | 1991.86 | 0.0 | -0.8 |
| STF 1062 AB | 6012 | 35785 | 2002.996 | -0.5 | +0.3 |
| STTA 84 AB | 36026 | 1991.62 | -0.7 | -0.7 | |
| STF 1090 AB | 6073 | 36122 | 1991.72 | -0.1 | +0.0 |
| STF 1051 AC | 6028 | 36132 | 1991.76 | +0.4 | +0.3 |
| STTA 87 | (2966 00032) | 1991.76 | -0.3 | -0.9 | |
| STF 1122 | 6319 | (4121 01516) | 1991.82 | -1.3 | -0.5 |
| SHJ 86 AB | 39340 | 1991.79 | -0.5 | -0.2 | |
| STTA 91 AB | 40791 | 1991.7 | -2.9 | +0.8 | |
| ES 2631 | 44628 | 1991.79 | +0.3 | -0.5 | |
| STF 1315 | 7226 | 45206 | 1991.59 | 0.0 | +0.1 |
| STF 1321 | 7251 | 45343 | 1991.81 | +6.6 | -0.4 |
| S 598 | 46471 | 1991.75 | -1.4 | -2.8 | |
| STF 1369 AB | 7438 | 47053 | 2003.311 | -0.9 | +0.1 |
| STF 1369 AC | 7438 | 47053 | 1991.85 | 0.0 | -0.4 |
| STF 1369 BC | 7438 | 47054 | 1991.86 | +0.1 | -0.1 |
| STF 1399 | 7589 | 48785 | 1991.50 | +0.6 | -0.3 |
| STF 1415 | 7705 | 50433 | 2003.251 | +0.7 | +0.1 |
| HZG 8 AC | 8046 | 54136 | 1991.62 | +0.4 | -0.2 |
| S 621 AB | 54657 | 1991.72 | +1.6 | +6.9 | |
| S 621 AC | 54657 | 1991.73 | +2.1 | -4.0 | |
| STF 1516 AB | 8100 | 54952 | 1991.77 | -0.3 | +10.2 (1) |
| STF 1540 AB | 55846 | 1991.68 | -0.6 | -0.3 | |
| STFA 19 AB | 55945 | 1991.76 | +1.9 | -1.1 | |
| STF 1565 | 56875 | 1991.61 | -0.5 | +0.6 | |
| STTA 112 AB |
|
58067 | 1991.75 | -0.4 | +0.5 |
| SHJ 136 | 59384 | 1991.69 | -0.7 | +1.6 | |
| STF 1625 AB | 8494 | 59836 | 1991.64 | -1.4 | -0.2 |
| STF 1694 AB | 8682 | 62572 | 2003.284 | -2.2 | +0.5 |
| STTA 123 AB | 65603 | 1991.63 | -1.5 | +0.2 | |
| STTA 127 AB | 67589 | 1991.69 | -1.1 | +2.3 | |
| STF 1821 AB | 9173 | 69483 | 2008.278 | +0.3 | -0.5 |
| STFA 26 AB | 9198 | 69713 | 2003.251 | -0.3 | +0.3 |
| STF 1850 | 9277 | 79786 | 1991.71 | +0.2 | -0.3 |
| SHJ 191 | 9474 | 73366 | 1991.59 | -0.8 | -0.3 |
| STF 1972 AB | 9696 | 75809 | 1991.69 | +0.8 | +0.5 |
| STF 1964 AC | 9731 | 76563 | 2015.400 | -0.1 | +0.0 |
| STF 2010 AB | 9933 | 79043 | 2003.418 | -1.0 | -0.3 |
| SHJ 233 | 80926 | 1991.55 | +0.1 | +0.1 | |
| STFA 30 AC | 10129 | 1991.68 | -0.1 | -0.2 | |
| STFA 30 BC | 10129 | 1991.25 | Suspect Catalogue Figure?? | 0.0 (2) | |
| STF 2079 | 10146 | 81575 | 1991.82 | +0.1 | -0.1 |
| STFA 31 AB | 10149 | 81641 | 1991.47 | -0.4 | -0.4 |
| STTA 149 | 81880 | 1991.64 | +0.3 | +0.4 | |
| S 689 AB | 85201 | 1991.70 | +0.4 | -0.5 | |
| STFA 35 | 10628 | 85829 | 1999.4 | 0.0 | -0.1 |
| STF 2241 AB | 10759 | 86614 | 1991.7 | 0.0 | +0.3 |
| STTA 163 AB | 87815 | 1991.64 | +3.0 | -0.4 | |
| STF 2259 | 10955 | 88055 | 1991.61 | -0.3 | -0.2 |
| STF 2273 AB | 10985 | 88071 | 1991.77 | +0.1 | +0.7 |
| STF2308 AB | 11061 | 88136 | 2012.7725 | +0.2 | -0.8 |
| STF 2278 AB | 11035 | 165502 | 1991.60 | +1.0 | +0.1 |
| STF 2278 AC | 11035 | 165502 | 1991.62 | +0.9 | +0.5 |
| H 5 93 | 89270 | 1991.65 | +0.1 | -0.4 | |
| STF 2323 AC | 11336 | 90156 | 2000.29 | -0.5 | +0.4 |
| STF 2323 BC | 11336 | (3916 01982) | 1991.41 | -1.5 | +0.9 |
| STF 2372 AB | 11593 | 91707 | 2003.418 | 0.0 | +0.2 |
| STFA 38 AD | 11639 | 91971 | 2003.418 | -0.3 | -0.1 |
| STFA 39 AB | 11745 | 92420 | 1991.49 | -0.6 | 0.0 |
| STTA 176 AB | 92794 | 1991.81 | -0.9 | -0.7 | |
| SHJ 282 AC | 11834 | 92833 | 2003.697 | -0.4 | +0.6 |
| STF 2420 AB | 1179 | 92512 | 2003.628 | -2.4 | +1.0 |
| STF 2474 AB | 12101 | 94076 | 2013.5533 | +2.0 | -0.6 |
| STTA 177 AC | 12160 | 94377 | 1991.50 | -2.5 | -3.1 |
| STTA 178 | 94624 | 1991.57 | +0.9 | -0.2 | |
| STTA 181 AB | 95028 | 1991.62 | -1.3 | +1.1 | |
| STFA 43 AB | 12540 | 95947 | 2003.418 | +0.5 | +0.6 |
| STF 2549 AD | 12586 | 96002 | 1991.76 | -1.2 | +1.0 |
| STFA 44 | 96164 | 1991.63 | +0.6 | -0.4 | |
| ARN 82 AB | (2667 00321) | 1991.61 | -0.3 | +0.2 | |
| H 626 AB | 12693 | 96516 | 1991.69 | +0.5 | -0.7 |
| STFA 46 AB | 12815 | 96895 | 2003.628 | -1.2 | +0.8 |
| STTA 188 AB | 96986 | 1991.64 | -0.1 | +0.8 | |
| H 5 137 AB | 12900 | 97242 | 2003.628 | -1.0 | -0.5 |
| STFA 48 AB | 97876 | 1991.69 | +0.2 | -0.3 | |
| AC 16 AC | 13176 | 98248 | 1991.67 | +0.2 | -1.0 |
| STTA 200 AB | 98658 | 1991.73 | -0.9 | +0.7 | |
| ES 25 AF | 13376 | (2683 03586) | 1991.61 | -0.2 | -0.1 |
| SHJ 314 AF | 13374 | 99002 | 2003.695 | +0.3 | +1.5 |
| WEB 12 AB | (1625 00995) | 1991.703 | +0.2 | -0.6 | |
| HJ 606 AB | 99196 | 1991.66 | +0.3 | -0.1 | |
| STF 2637 AC | 13442 | 99352 | 1991.65 | -0.5 | +3.3 |
| S 738 AB | 13463 | 99409 | 1991.61 | -1.6 | -0.6 |
| STF 2664 AB | 100226 | 1991.49 | -0.3 | -0.5 | |
| STTA 207 AC | 13786 | 100515 | 1991.70 | +0.3 | -1.7 |
| STF 2687 AB | 13870 | 100808 | 2003.629 | +0.2 | -0.3 |
| STF 2691 AB | 13919 | 101109 | 1991.68 | -0.4 | -0.2 |
| STF 2690 A BC | 13946 | 101233 | 1991.52 | +1.0 | +0.5 |
| STF 2703 AB | 101700 | 1991.64 | -1.1 | -0.3 | |
| STTA 211 AB | 102775 | 1991.72 | +1.7 | -2.9 | |
| STF 2758 AB | 14636 | 104214 | 1991.69 | +4.4 | +1.7 (3) |
| BU 69 AC | 14570 | 103852 | 1991.44 | +0.6 | -0.5 |
| STF 2769 AB | 14710 | 104539 | 2003.784 | -0.2 | +0.8 |
| STFA 56 AB | 15147 | 106783 | 2003.629 | -0.6 | +0.4 |
| GUI 36 CD | 15184 | 106890 | 2003.620 | -0.3 | +0.9 |
| STF 2816 AD | 15184 | 106886 | 2003.620 | +0.2 | +0.7 |
| STT 447 AE | 15186 | (3191 00346 | 1991.67 | -0.3 | 0.0 |
| STTA 222 AB | (0555 00887) | 1991.88 | 0.0 | -0.2 | |
| ES 382 AC | 15377 | 107844 | 1991.82 | -0.2 | -0.3 |
| STF 2840 AB | 15405 | 107930 | 2003.621 | +0.6 | +0.3 |
| S 800 AB | 15434 | 108073 | 1991.61 | -0.1 | +0.0 |
| STF 2841 A BC | 15431 | 108119 | 2003.784 | -1.7 | +0.2 |
| ARY 45 AB | 109275 | 1991.67 | +0.3 | +0.0 | |
| STF 2872 A BC | 15670 | (3981 01587) | 1991.68 | -0.9 | +1.2 |
| STF 2893 AB | 15764 | 109659 | 2003.629 | +0.2 | +0.4 |
| STTA 234 AC | 15951 | (3615 00740) | 1991.67 | -0.2 | +0.0 |
| STFA 58 AC | 15987 | 110991 | 2003.629 | -0.2 | +0.1 |
| STF 2922 AB | 16095 | 111546 | 2003.625 | -0.2 | +0.2 |
| STTA 236 AB D | 16111 | 111570 | 1991.74 | -0.8 | +0.5 |
| BU 277 AB D | 16153 | (3209 00191) | 1991.63 | -0.3 | +0.5 |
| HJ 1823 AC | 16321 | 112905 | 1991.68 | +0.2 | -0.4 |
| STTA 238 AB | 112970 | 1991.72 | -0.3 | -0.0 | |
| STTA 241 AB | 11344 | 1991.66 | -0.4 | +0.3 | |
| S 825 AB | 16558 | 218741 | 1991.76 | -0.5 | -0.1 |
| STF 2985 AB | 16557 | 114385 | 2012.6746 | +0.5 | -0.4 |
| STTA 245 AB C | 16748 | 115666 | 1991.64 | +0.3 | -0.6 |
| SHJ 355 AC | 16795 | 115990 | 1991.59 | -0.2 | -0.7 |
| STF 3041 A BC | 17009 | 117366 | 1991.52 | +1.6 | -1.0 |
| STT 507 AC | 17020 | 117430 | 2003.629 | -1.1 | 0.0 |
| STF 3044 AB | 17079 | 117768 | 1991.62 | +0.2 | -0.5 |
Table 4: Doubles with significant proper motion differences
(All Proper Motions: WDS 2017)
| Pair | Year of C-measurement (O = 2017) | RA (primary) PM (arc-sec/1000yr) | DEC (primary) PM (arc-sec/1000yr) | RA (secondary) PM (arc-sec/1000yr) | DEC (secondary) PM (arc-sec/1000yr) | θ (O-C)
(o) |
ρ (O-C)
(‘’) |
|
| HJ 1986 AB | 1991 | +050 | +021 | +079 | -024 | +1.8 | +0.1 | |
| H 5 18 AD | 1991 | +051 | -032 | -002 | -003 | +0.5 | +1.5 | |
| H 5 82 AB | 1991 | -026 | -024 | +017 | +004 | -0.1 | +1.8 | |
| SHJ 40 AB | 1991 | -029 | -078 | -001 | -001 | +3.3 | -0.4 | |
| S 459 AB | 1991 | -006 | -015 | -014 | -035 | 0.0 | +1.1 | |
| STFA 13 AB | 1991 | -007 | -008 | -004 | -027 | +0.5 | -1.0 | |
| HJL 1046 AB | 1991 | -009 | -048 | -013 | -058 | -1.3 | +1.8 | |
| STTA 91 AB | 1991 | -055 | -005 | +088 | -139 | -2.9 | +0.8 | |
| STF 1321 AB | 1991 | -153 | -056 | -155 | -066 | +6.6 | -0.4 | |
| S 598 | 1991 | -022 | -012 | -090 | -016 | -1.4 | -2.8 | |
| S 621 AB | 1991 | -334 | -124 | +007 | -002 | +1.6 | +6.9 | |
| S 621 AC | 1991 | -334 | -124 | +000 | -001 | +2.1 | -4.0 | |
| STF 1516 AB | 1991 | -402 | +110 | +001 | -002 | -0.3 | +10.2 | |
| STFA 19 AB | 1991 | +016 | -010 | -090 | +017 | +1.9 | -1.1 | |
| STTA 127 AB | 1991 | -176 | -058 | -104 | +011 | -1.1 | +2.3 | |
| STF 2010 AB | 2003 | -034 | -006 | -026 | -032 | -1.0 | -0.3 | |
| STTA 163 AB | 1991 | -053 | +099 | +011 | -014 | +3.0 | -0.4 | |
| STF 2278 AB | 1991 | -021 | +039 | +004 | +013 | +1.0 | +0.1 | |
| STF 2278 AC | 1991 | -021 | +039 | +001 | +012 | +0.9 | +0.5 | |
| STF 2420 AB | 2003 | +078 | +025 | +000 | +000 | -2.4 | +1.0 | |
| STTA 177 AC | 1991 | +002 | -012 | +125 | -196 | -2.5 | -3.1 | |
| STTA 181 AB | 1991 | +013 | -053 | -021 | +010 | -1.3 | +1.1 | |
| STF 2549 AD | 1991 | +041 | +020 | -006 | -009 | -1.2 | +0.2 | |
| STF 2637 AC | 1991 | +059 | +098 | +005 | -056 | -0.5 | +3.3 | |
| STF 2637 AC | 1991 | +059 | +098 | +005 | -056 | -0.5 | +3.3 | |
| S 738 AB | 1991 | -011 | -017 | +001 | +001 | -1.6 | -0.6 | |
| STTA 207 AC | 1991 | +056 | +043 | -003 | -018 | +0.3 | -1.7 | |
| STTA 211 AB | 1991 | -004 | -002 | +131 | +100 | +1.7 | -2.9 | |
| STF 3041 A BC | 1991 | +017 | -010 | +083 | -078 | +1.6 | -1.0 |
Table 5: Alternative Residuals
| CATALOGUE (date) | Residual (O-C) PA (o) | Residual (O-C) SEPARATION (“) | |
| STF 1516 AB (1) | Fourth Interferometric (1991) | -0.3 | +10.2 |
| STF 1516 AB (1) | WDS (2015) | -1.1 | 0.0 |
| STFA 30 BC (2)
|
Fourth Interferometric (1991) | * | 0.0 |
| STFA 30 BC (2) | WDS (2015) | -3.0 | -1.4 |
| STF 2758 AB (3) | Fourth Interferometric (1991) | +4.4 | +1.7 |
| STF 2758 AB (3) | WDS (2016) | +0.2 | +0.4 |
*Fourth Interferometric Catalogue gives a PA of 15.5 degrees?? WDS (2015) gives 197 degrees and NW measured 194 degrees.