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Micrometer measurements of double stars made at the Côte D'Azur and Calar Alto observatories
We report 312 micrometer measurements of 155 visual double stars madewith the 50 cm refractor at the Côte D'Azur observatory (Nice,France) and with the 152 cm telescope at Calar Alto observatory(Almería, Spain).
| Binary star measurements made at Nice with the 50-cm reflector
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1989A&AS...77..125L&db_key=AST
| Some enigmatic binary stars. I
Historical measurements of components of binary star systems at timesexhibit evidence for incompatible interpretations. A short period andstrong eccentricity can equally be a long period with feebleeccentricity. Furthermore, measurements have been made indicating bothdirect and retrograde motions of the components. It has sometimes beenfound that the observations of contradicting evidence have been made ofa second binary system near the system first measured. Note is taken ofthe objects ADS 1959 - A 1818, ADS 2051 - HU 539, ADS 5515 - A 512, ADS5671 - BU 1022, ADS 6001 - A 1963, and ADS 7550 - A 2561, which maypossibly be combinations of two or even three binary clusters observedat different times. Tables are presented of data thus far measured ofeach system.
| Mesures d'étoiles doubles à Meudon (2^éme série)
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Membro dei seguenti gruppi:
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Osservazione e dati astrometrici
| Costellazione: | Pegaso |
| Ascensione retta: | 21h42m34.57s |
| Declinazione: | +18°59'37.2" |
| Magnitudine apparente: | 8.44 |
| Moto proprio RA: | 12.3 |
| Moto proprio Dec: | -7.7 |
| B-T magnitude: | 8.772 |
| V-T magnitude: | 8.468 |
Cataloghi e designazioni:
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