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HD 189018


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Binary Star Speckle Interferometry: Measurements and Orbits
Results of our second observational run of binary star interferometricmeasurements with an ICCD speckle camera attached to the 1.52 mtelescope of the Observatorio Astronómico Nacional at Calar Alto(Almería, Spain) in 2000 June-July are presented. The measuredangular separations range from 0.096" to 6.558". With the use of the newspeckle data, the orbits of the visual binaries WDS 14369+4813 and WDS21597+4908 are improved.

Micrometer Measures of Double Stars
Micrometer measures of 795 double stars made with the 26 inch (0.66 m)refractor of the US Naval Observatory from 1984 to 1990 are presented.

Mesures d'etoiles doubles faites aux lunettes de 74 et 50 CM de l'Observatoire de la Cote d'Azur
We give 657 measurements of double stars, Table 1 by R. Gili with CCDcamera, Table 2 by P. Couteau with filar micrometer. Tables 1 and 2 areonly available in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html.

Double star measures at Lick Observatory, Mount Hamilton, California.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978PASP...90..465H&db_key=AST

Mesures d'etoiles doubles a Meudon (3eme et derniere serie).
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976A&AS...23..205M&db_key=AST

Mesures d'étoiles doubles faites au 0,38 m de l'Observatoire de Paris.
Not Available

Micrometer measures of doubles stars. III.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1963AJ.....68...57V&db_key=AST

Mesures d'étoiles doubles faites à l'Observatoire de Paris
Not Available

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Membro dei seguenti gruppi:

Osservazione e dati astrometrici

Costellazione:Aquila
Ascensione retta:19h57m29.73s
Declinazione:+14°07'41.2"
Magnitudine apparente:8.767
Moto proprio RA:0
Moto proprio Dec:-3.6
B-T magnitude:9.092
V-T magnitude:8.794

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 189018
TYCHO-2 2000TYC 1083-2706-1
USNO-A2.0USNO-A2 0975-17280134
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