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HD 134748


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Observations of double stars and new pairs. XIV
Results of a continuing survey of visual double stars are presented,including 4880 measurements made from February 1987 to November 1989.The positions in WDS format and Durchmusterung numbers are given for 194pairs first reported here. Micrometer measurements of 1142 doubles madewith the Swarthmore 61 cm refractor are presented. Magnitudes areestimated for some of the objects. Plate measurements, plateorientations, position angles, number of nights, and measured exposuresare given. Visual observations of 342 pairs obtained in May 1989 atCerro Tololo, mostly with the 1.0 m reflector, are reported.

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观测天体数据

星座:天燕座
右阿森松:15h17m10.71s
赤纬:-73°40'43.7"
视星:8.808
距离:219.78 天文距离
右阿森松适当运动:8.8
赤纬适当运动:-17.9
B-T magnitude:9.255
V-T magnitude:8.845

目录:
适当名称   (Edit)
HD 1989HD 134748
TYCHO-2 2000TYC 9271-2255-1
USNO-A2.0USNO-A2 0150-14739005
HIPHIP 74798

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