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Table 3
The comparison and check stars used during the observation of each close binary.
| Variable | Comparison | Check | |
|
|
|||
| QX And | GSC 2816–2039 | GSC 2816–1820 | |
| α2000: | 01h57m57 78 |
01h57m4714 |
01h57m3194 |
| δ2000: | +37°48′22 4 |
+37°47′303 |
+37°53′432 |
| Spec. Type: | F5 | F0 | F3 |
| V(mag): | 11.43 | 10.9 | 11.2 |
|
|
|||
| RW Com | GSC 1991–1657 | – | |
| α2000: | 12h33m0028 |
12h33m0394 |
– |
| δ2000: | +26°42′584 |
+26°37′276 |
– |
| Spec. Typ.: | G2 | – | – |
| V(mag): | 11.00 | 11.86 | – |
|
|
|||
| MR Del | GSC 518–13 | GSC 518–447 | |
| α2000: | 20h31m1346 |
20h31m2418 |
20h31m2353 |
| δ2000: | +05°13′085 |
+05°12′501 |
+05°18′03′̣1 |
| Spec. Type: | K0 | – | F2 |
| V(mag): | 11.01 | 9.86 | 9.73 |
|
|
|||
| BD +07° 3142 | GSC 380–167 | GSC 380–429 | |
| α2000: | 16h10m0321 |
16h20m0922 |
16h20m1284 |
| δ2000: | +07°07′287 |
+07°03′546 |
+07°11′175 |
| Spec. Typ.: | G5 | F8 | – |
| V(mag): | 9.89 | 9.15 | 10.6 |
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