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HD 181680


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Mesures d'etoiles doubles faites a Nice, etoiles doubles nouvelles (24eme serie) decouvertes a Nice.
Table 1 gives 1182 measurements of 682 binaries observed with the 74 and50 cm refractors. Table 2 lists 26 new binaries discovered with the 50cm refractor.

Binary-star measurements carried out at PIC DU Midi and at Nice
Data on 219 measurements of 103 close binaries observed with the 2mtelescope at Pic du Midi are presented. Also presented are data on 230measurements of 126 binaries observed with the 74 cm refractor of theNice Observatory.

Measurements of binary stars obtained at Pic-du-Midi and at Nice
A total of 112 visual measurements of 82 close binaries observed with 2mtelescope at Pic-du-Midi are presented. In addition, 344 measurements of163 close binaries were observed with the 74-cm and 50-cm refractors atNice. All measurements were made by a micrometer with illuminated wires.

New double stars (21st series) discovered at Nice
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1988A&AS...75..163C&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Calgi
Sað Açýklýk:19h19m36.10s
Yükselim:+40°35'07.3"
Görünürdeki Parlaklýk:8.057
Uzaklýk:361.011 parsek
özdevim Sað Açýklýk:-1.3
özdevim Yükselim:-14.6
B-T magnitude:8.177
V-T magnitude:8.067

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 181680
TYCHO-2 2000TYC 3125-46-1
USNO-A2.0USNO-A2 1275-11151796
HIPHIP 94973
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