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HD 198706

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ICCD Speckle Observations of Binary Stars. XXIII. Measurements during 1982-1997 from Six Telescopes, with 14 New Orbits We present 2017 observations of 1286 binary stars, observed by means ofspeckle interferometry using six telescopes over a 15 year period from1982 April to 1997 June. These measurements constitute the 23dinstallment in CHARA's speckle program at 2 to 4 m class telescopes andinclude the second major collection of measurements from the MountWilson 100 inch (2.5 m) Hooker Telescope. Orbital elements are alsopresented for 14 systems, seven of which have had no previouslypublished orbital analyses.
Micrometer Measures of Double Stars Micrometer measures of 795 double stars made with the 26 inch (0.66 m)refractor of the US Naval Observatory from 1984 to 1990 are presented.
Micrometer measures of doubles stars. III. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1963AJ.....68...57V&db_key=AST

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Osservazione e dati astrometrici

Costellazione:	Acquario
Ascensione retta:	20^h52^m08.54^s
Declinazione:	+02Â°05'15.6"
Magnitudine apparente:	9.106
Moto proprio RA:	16.3
Moto proprio Dec:	0.2
B-T magnitude:	9.45
V-T magnitude:	9.135

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 198706
TYCHO-2 2000	TYC 516-1427-1
USNO-A2.0	USNO-A2 0900-19121792

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