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Photographic measurements of visual binaries
The results of 164 photographic measurements of 50 large and, generally,neglected visual double stars are presented. The measurements have beenmade at Brera-Merate Observatory during the years 1984-88 with Zenastrograph.
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Observation and Astrometry data
| Constellation: | Δράκων |
| Right ascension: | 17h16m27.21s |
| Declination: | +54°32'39.3" |
| Apparent magnitude: | 9.275 |
| Proper motion RA: | 6.7 |
| Proper motion Dec: | -1.5 |
| B-T magnitude: | 9.745 |
| V-T magnitude: | 9.314 |
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