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HD 234530


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ICCD Speckle Observations of Binary Stars. XVII. Measurements During 1993-1995 From the Mount Wilson 2.5-M Telescope.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1997AJ....114.1639H&db_key=AST

Binary star speckle measurements during 1989-1993 from the SAO 6 M and 1 M telescopes in Zelenchuk
We have continued to survey visual and interferometric binary stars withsignificant orbital motion by means of speckle method at the telescopesof the Special Astrophysical Observatory (SAO) in Zelenchuk. Here wepresent the lists of 267 speckle observations made with the 6 m and the1 m telescopes in the period May 1989-November 1993.

Measurements of close binaries performed at PIC DU Midi
A total of 241 measurements of 119 close binaries observed with the 2-mTelescope Bernard Lyot at Pic du Midi Observatory are given. Themeasurements were performed with 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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Observation and Astrometry data

Constellation:Dragon
Right ascension:17h59m50.43s
Declination:+50°39'10.7"
Apparent magnitude:9.136
Proper motion RA:-22.1
Proper motion Dec:86.6
B-T magnitude:10.135
V-T magnitude:9.219

Catalogs and designations:
Proper Names
HD 1989HD 234530
TYCHO-2 2000TYC 3523-55-1
USNO-A2.0USNO-A2 1350-09447161
HIPHIP 88119
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