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HD 171973


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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.

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Observation and Astrometry data

Constellation:Hercules
Right ascension:18h36m48.02s
Declination:+21°20'02.4"
Apparent magnitude:8.198
Distance:847.458 parsecs
Proper motion RA:-0.3
Proper motion Dec:2.2
B-T magnitude:8.325
V-T magnitude:8.209

Catalogs and designations:
Proper Names
HD 1989HD 171973
TYCHO-2 2000TYC 1582-1472-1
USNO-A2.0USNO-A2 1050-11051392
HIPHIP 91252
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