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HD 52255


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Speckle Interferometry at the US Naval Observatory. VIII.
The results of 2044 speckle interferometric observations of doublestars, made with the 26 inch (66 cm) refractor of the US NavalObservatory, are presented. Each speckle interferometric observation ofa system represents a combination of over a thousand short-exposureimages. These observations are averaged into 1399 mean positions andrange in separation from 0.16" to 14.97", with a mean separation of2.51". This is the eighth in a series of papers presenting measuresobtained with this system and covers the period 2001 March 18 through2001 December 30.

Sixty-six newly-identified double stars
Precise positions are given for 66 stars of previously doubtfulexistence, unclear identity, or uncertain position. Cross identificationof all pairs with existing astrometric star catalogues has beenattempted. Cross identifications and AGK3 data are given for 12 objectswhich coincided with AGK3 stars. The mean error of the absolutepositions for well-defined star images is about 0.5 arcsec, while thatof the relative positions within wide pairs is about 0.4 arcsec.

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观测天体数据

星座:雙子座
右阿森松:07h01m36.12s
赤纬:+26°34'25.3"
视星:8.707
右阿森松适当运动:-3.6
赤纬适当运动:-6.4
B-T magnitude:8.644
V-T magnitude:8.702

目录:
适当名称   (Edit)
HD 1989HD 52255
TYCHO-2 2000TYC 1903-274-1
USNO-A2.0USNO-A2 1125-04786856

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