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HD 125229


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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.

Binary stars unresolved by speckle interferometry. III
The KPNO's 4-m telescope was used in 1975-1981 to determine the epochsof 1164 speckle observations for 469 unresolved, known or suspectedbinary stars. The data, presented in tabular form, encompass visualbinaries with eccentric orbits, occultation binaries, astrometricbinaries, Hyades stars of known or suspected duplicity, and many longperiod spectroscopic binaries.

Visual multiples. VII - MK classifications
Classifications are given for 865 components of visual multiples; theyshow no systematic differences from the MK system, and the random errorsare one subclass in type and two-thirds of a luminosity class. It isfound that at least 1% of the F-type IV and V stars are weak-lined, 32%of the A4-F1 IV and V stars are Am, and 5% of the A0-A3 IV and V starsare early-type Am. Attention is called to the large fraction (55%) ofthe A3-A9 III-V stars that are of luminosity classes III or IV, unlikethe percentage (16%) at neighboring types.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Buyuk Ayi
Sað Açýklýk:14h16m08.47s
Yükselim:+56°42'45.7"
Görünürdeki Parlaklýk:7.134
Uzaklýk:135.87 parsek
özdevim Sað Açýklýk:-36.1
özdevim Yükselim:6
B-T magnitude:7.424
V-T magnitude:7.158

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 125229
TYCHO-2 2000TYC 3862-202-1
USNO-A2.0USNO-A2 1425-08093731
HIPHIP 69711

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