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HD 198569


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Nice observatory measurements of double stars (3rd series)
We present recent measurements of visual double stars made at the NiceObservatory (3rd series). We also report the discovery of a new doublestar: JCT 4. Moreover we give a more precise position of the double starDOO 35. Table 1 is only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

A preliminary compilation of DS-programme star positions
A catalog is presented of the double-star-program (DS-program) starpositions, listing right ascensions for 930 DSs and declinations for1225 DSs of the program. The positions were compiled from the observedvalues obtained between 1980 and 1987 with the meridian circles of sixUSSR observatories (the Moscow, Kazan', Kiev, Khar'kov, Odessa, andTashkent Observatories) and the Belgrade Observatory. The measurementsand the treatment of the observational material were performed using therelative method, and the FK-4 system stars were used as reference stars.

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

Mesures photographiques d'étoiles doubles
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....1..409F&db_key=AST

Mikrometermessungen von Doppelsternen. VI.
Not Available

A study of visual binaries having primaries above the main sequence.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1960AJ.....65...60S&db_key=AST

Mesures d'étoiles doubles faites au réfracteur de 30 cm. de l'Observatoire de Neuchatel
Not Available

Mesures micrométriques d'Etoiles Doubles
Not Available

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Dades d'Observació i Astrometria

Constel·lació:Delphinus
Ascensió Recta:20h51m03.77s
Declinació:+06°23'14.1"
Magnitud Aparent:8.458
Moviment propi RA:3.6
Moviment propi Dec:-5.6
B-T magnitude:9.753
V-T magnitude:8.565

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 198569
TYCHO-2 2000TYC 524-1132-1
USNO-A2.0USNO-A2 0900-19101143
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