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Speckle Interferometry at the Observatorio Astronómico Nacional. III
We present speckle interferometric measurements of binary starsperformed during August of 2010 with the 1.5 m telescope and duringNovember of 2010 with the 2.1 m telescope of the ObservatorioAstronómico Nacional at SPM (Mexico). We report here the resultsof 238 measurements of 225 pairs with a primary limiting magnitude of V= 12.2; 211 of them have separations less than 1''. The mean error inseparation is 0.03 arcsec 1.5° in position angle. Some of theposition angles were determined with the usual 180° ambiguity.
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Osservazione e dati astrometrici
| Costellazione: | Perseo |
| Ascensione retta: | 03h35m26.37s |
| Declinazione: | +35°28'47.4" |
| Magnitudine apparente: | 8.519 |
| Distanza: | 37.411 parsec |
| Moto proprio RA: | -42.1 |
| Moto proprio Dec: | -31 |
| B-T magnitude: | 9.751 |
| V-T magnitude: | 8.621 |
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