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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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Dades d'Observació i Astrometria

Constel·lació:Ophiucus
Ascensió Recta:17h49m33.91s
Declinació:+00°54'22.4"
Magnitud Aparent:7.593
Distancia:1612.903 parsecs
Moviment propi RA:2.4
Moviment propi Dec:-6.5
B-T magnitude:10.153
V-T magnitude:7.805

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 162163
TYCHO-2 2000TYC 416-1258-1
USNO-A2.0USNO-A2 0900-10643620
HIPHIP 87244

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