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HD 166970

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ICCD speckle observations of binary stars. VIII - Measurements during 1989-1991 from the Cerro Tololo 4 M telescope One-thousand eighty-eight observations of 947 binary star systems,observed by means of speckle interferometry with the 4 m telescope onCerro Tololo, are presented. These measurements, made during the period1989-1991, comprise the second installment of results stemming from theexpansion of our speckle program to the southern hemisphere.
Walraven photometry of nearby southern OB associations Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.
ICCD speckle observations of binary stars. V - Measurements during 1988-1989 from the Kitt Peak and the Cerro Tololo 4 M telescopes Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1990AJ.....99..965M&db_key=AST

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Osservazione e dati astrometrici

Costellazione:	Sagittario
Ascensione retta:	18^h14^m38.77^s
Declinazione:	-36Â°53'56.1"
Magnitudine apparente:	7.786
Distanza:	195.695 parsec
Moto proprio RA:	-3.8
Moto proprio Dec:	-14.3
B-T magnitude:	7.842
V-T magnitude:	7.791

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 166970
TYCHO-2 2000	TYC 7404-679-1
USNO-A2.0	USNO-A2 0525-33551647
HIP	HIP 89399

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