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Mining in the HIPPARCOS raw data
The Hipparcos solutions flagged as unreliable after the completion ofthe standard data processing have been systematically revisited in thelight of additional information, primarily related to theirmultiplicity. In many cases improved solutions have been obtained,yielding at the same time an Hipparcos based separation and positionangle and a better astrometric solution for the system. The principlesapplied in this reprocessing are explained and more than a hundred newsolutions with absolute and relative astrometry are presented anddiscussed. Tables 1 to 7 are also available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
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Observation and Astrometry data
| Constellation: | Ursa Major |
| Right ascension: | 11h15m22.88s |
| Declination: | +58°24'06.1" |
| Apparent magnitude: | 10.052 |
| Proper motion RA: | 16.6 |
| Proper motion Dec: | 1.4 |
| B-T magnitude: | 10.695 |
| V-T magnitude: | 10.106 |
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