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HD 30811


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관련 글

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.

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관측 및 측정 데이터

별자리:오리온자리
적경:04h50m51.13s
적위:+01°54'22.7"
가시등급:8.689
적경상의 고유운동:-5.8
적위상의 고유운동:-17.4
B-T magnitude:9.083
V-T magnitude:8.722

천체목록:
일반명   (Edit)
HD 1989HD 30811
TYCHO-2 2000TYC 88-33-1
USNO-A2.0USNO-A2 0900-01200392

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