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HD 208621


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Speckle interferometry of HIPPARCOS link stars. II
A second list is presented of stars that have been tested for theirsuitability as astrometric links between the Hipparcos satellite and theSpace Telescope. A speckle interferometer and autocorrelator were used,first on the 1.9-m telescope of the Mt. Stromlo and Siding SpringObservatories, and then, after discarding 16 stars showing evidence of abinary nature, on the Anglo-Australian 3.9-m telescope. Results aregiven for 123 stars. Combining the present list with the 1984 list, itis estimated that 29 percent of the original selection of 'cleanlooking' stars (on sky survey prints) are expected to be multiple at theresolution of the 3.9-m telescope, 0.03-0.7 arcsec.

Determination of atmospheric parameters for G and K giants by means of photoelectric indices.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971A&A....15..123H&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Oglak
Sað Açýklýk:21h57m47.44s
Yükselim:-15°07'24.0"
Görünürdeki Parlaklýk:7.406
Uzaklýk:131.752 parsek
özdevim Sað Açýklýk:12.5
özdevim Yükselim:-25.7
B-T magnitude:7.519
V-T magnitude:7.416

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 208621
TYCHO-2 2000TYC 6376-1437-1
USNO-A2.0USNO-A2 0675-36740356
HIPHIP 108414

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