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HD 111559


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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.

Measurements of binary stars performed at Nice (Second series)
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984A&AS...57..467M&db_key=AST

Mesures d'etoiles doubles faites a Nice.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1978A&AS...33..275M&db_key=AST

Mesures d'etoiles doubles a Meudon (3eme et derniere serie).
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976A&AS...23..205M&db_key=AST

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观测天体数据

星座:天龍座
右阿森松:12h48m41.82s
赤纬:+72°08'53.8"
视星:8.574
距离:166.113 天文距离
右阿森松适当运动:-30.5
赤纬适当运动:-9.1
B-T magnitude:9.052
V-T magnitude:8.614

目录:
适当名称   (Edit)
HD 1989HD 111559
TYCHO-2 2000TYC 4404-1369-1
USNO-A2.0USNO-A2 1575-03288589
HIPHIP 62515

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