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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: | Drache |
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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