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HD 193651


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Observations of double stars and new pairs. XIV
Results of a continuing survey of visual double stars are presented,including 4880 measurements made from February 1987 to November 1989.The positions in WDS format and Durchmusterung numbers are given for 194pairs first reported here. Micrometer measurements of 1142 doubles madewith the Swarthmore 61 cm refractor are presented. Magnitudes areestimated for some of the objects. Plate measurements, plateorientations, position angles, number of nights, and measured exposuresare given. Visual observations of 342 pairs obtained in May 1989 atCerro Tololo, mostly with the 1.0 m reflector, are reported.

Mesures d'étoiles doubles visuelles
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....3...71M&db_key=AST

Mesures d'étoiles doubles faites à Nice aux lunettes de 50 et de 74 CM
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....3...51C&db_key=AST

Mesures d'etoiles doubles effectuees AU refracteurs de 38 CM puis de 50 CM de l'Observatoire de Nice.
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Osservazione e dati astrometrici

Costellazione:Aquila
Ascensione retta:20h21m17.45s
Declinazione:+02°50'22.1"
Magnitudine apparente:9.086
Moto proprio RA:64.3
Moto proprio Dec:-18.8
B-T magnitude:10.259
V-T magnitude:9.183

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 193651
TYCHO-2 2000TYC 500-340-1
USNO-A2.0USNO-A2 0900-18311465
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