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Speckle Interferometry at the U.S. Naval Observatory. XVII.
The results of 3362 intensified CCD observations of double stars, madewith the 26 inch refractor of the U.S. Naval Observatory, are presented.Each observation of a system represents a combination of over 2000short-exposure images. These observations are averaged into 1970 meanrelative positions and range in separation from 0farcs78 to 72farcs17,with a mean separation of 14farcs76. This is the 17th in this series ofpapers and covers the period 2010 January 6 through December 20. Alsopresented are 10 pairs that are resolved for the first time.
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Osservazione e dati astrometrici
| Costellazione: | Cefeo |
| Ascensione retta: | 00h02m49.21s |
| Declinazione: | +80°17'11.6" |
| Magnitudine apparente: | 9.425 |
| Moto proprio RA: | 50.5 |
| Moto proprio Dec: | 15.4 |
| B-T magnitude: | 9.957 |
| V-T magnitude: | 9.469 |
Cataloghi e designazioni:
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