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HD 174549


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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.

Visual multiples. VIII - 1000 MK types
A total of 1000 new classifications are given for stars brighter than B= 8.0 mag in the Aitken double star catalog. The classificationssupplement 865 classifications obtained in 1981 and 1984. Among thenewly discovered stars are 12 new Ap stars, eight Lambda Bootis stars,one Ba II star, and 60 Am stars. A detailed list of the newclassifications is given.

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Osservazione e dati astrometrici

Costellazione:Lira
Ascensione retta:18h49m55.77s
Declinazione:+26°25'30.6"
Magnitudine apparente:7.113
Distanza:127.714 parsec
Moto proprio RA:-3.9
Moto proprio Dec:23
B-T magnitude:7.242
V-T magnitude:7.124

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 174549
TYCHO-2 2000TYC 2116-2266-1
USNO-A2.0USNO-A2 1125-10484522
HIPHIP 92410

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