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HD 76334


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Speckle Interferometry of New and Problem HIPPARCOS Binaries
The ESA Hipparcos satellite made measurements of over 12,000 doublestars and discovered 3406 new systems. In addition to these, 4706entries in the Hipparcos Catalogue correspond to double star solutionsthat did not provide the classical parameters of separation and positionangle (rho,theta) but were the so-called problem stars, flagged ``G,''``O,'' ``V,'' or ``X'' (field H59 of the main catalog). An additionalsubset of 6981 entries were treated as single objects but classified byHipparcos as ``suspected nonsingle'' (flag ``S'' in field H61), thusyielding a total of 11,687 ``problem stars.'' Of the many ground-basedtechniques for the study of double stars, probably the one with thegreatest potential for exploration of these new and problem Hipparcosbinaries is speckle interferometry. Results are presented from aninspection of 848 new and problem Hipparcos binaries, using botharchival and new speckle observations obtained with the USNO and CHARAspeckle cameras.

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Observation and Astrometry data

Constellation:Hydra
Right ascension:08h55m22.76s
Declination:-03°08'51.9"
Apparent magnitude:7.01
Distance:137.174 parsecs
Proper motion RA:18.7
Proper motion Dec:-42.5
B-T magnitude:8.471
V-T magnitude:7.131

Catalogs and designations:
Proper Names
HD 1989HD 76334
TYCHO-2 2000TYC 4869-1184-1
USNO-A2.0USNO-A2 0825-06630003
HIPHIP 43810

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