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Observations of Double Stars. XVIII. Micrometer observations of 1350 pairs in 1995-1997 are listed.
Mesures d'etoiles doubles faites a Nice (5eme serie. Double star measurements made at Nice We present the last observations from two lists: General program and MLRpairs, made with the 50~cm refractor of Nice Observatory.
ICCD Speckle Observations of Binary Stars. XVII. Measurements During 1993-1995 From the Mount Wilson 2.5-M Telescope. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1997AJ....114.1639H&db_key=AST
Mesures de vitesses radiales. VIII. Accompagnement AU sol DU programme d'observation DU satellite HIPPARCOS We publish 1879 radial velocities of stars distributed in 105 fields of4^{\circ} \times 4^{\circ}. We continue the PPO series \cite[(Fehrenbachet al. 1987;]{Feh87} \cite[Duflot et al. 1990, 1992 and 1995),]{Du90}using the Fehrenbach objective prism method. Table 1 only available inelectronic form at CDS via to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
ICCD speckle observations of binary stars. V - Measurements during 1988-1989 from the Kitt Peak and the Cerro Tololo 4 M telescopes Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1990AJ.....99..965M&db_key=AST
ICCD speckle observations of binary stars. II - Measurements during 1982-1985 from the Kitt Peak 4 M telescope This paper represents the continuation of a systematic program of binarystar speckle interferometry initiated at the 4 m telescope on Kitt Peakin late 1975. Between 1975 and 1981, the observations were obtained witha photographic speckle camera, the data from which were reduced byoptical analog methods. In mid-1982, a new speckle camera employing anintensified charge-coupled device as the detector continued the programand necessitated the development of new digital procedures for reducingand analyzing speckle data. The camera and the data-processingtechniques are described herein. This paper presents 2780 newmeasurements of 1012 binary and multiple star systems, including thefirst direct resolution of 64 systems, for the interval 1982 through1985.
Micrometer Measures of Double Stars at Lick Observatory Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984PASP...96..174C&db_key=AST
Riduzione degli errori sistematici nelle osservazioni meridiane di tempo e di longitudine Not Available

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Observation and Astrometry data

Constellation:	Cygne
Right ascension:	20^h24^m38.74^s
Declination:	+55Â°26'35.0"
Apparent magnitude:	7.289
Distance:	216.45 parsecs
Proper motion RA:	2.2
Proper motion Dec:	-18.8
B-T magnitude:	7.384
V-T magnitude:	7.297

Catalogs and designations:

Proper Names	(Edit)
HD 1989	HD 194719
TYCHO-2 2000	TYC 3941-172-1
USNO-A2.0	USNO-A2 1425-10667772
HIP	HIP 100667

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