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HD 150732


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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.

Period variation determination of the W UMa type star V502 OPH
Photoelectric-photometry data of the W UMa system V502 Oph were madeduring June 1987 in Mexico. The observations are combined withpreviously published minima for the system to derive a quadraticephemeris. The results suggest that V502 has a smoothly decreasingperiod with a rate of change of -1.64 s/century.

BD +0 3566, a New Short Period Variable Star
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Photoelectric Photometry of Stars in the Vilnius System in Kapteyn Areas SA:92 SA:108 and SA:112
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Improved Ephemeris, V502 Ophiuchi
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The Kreinin-Murri Method for Absolute Determination of Equatorial-Star Declinations.
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Lichtelektrische UBV-Photometrie von Standardsternen und in vier Sternfeldern am Äquator
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Membro dei seguenti gruppi:

Osservazione e dati astrometrici

Costellazione:Ofiuco
Ascensione retta:16h42m52.23s
Declinazione:+00°04'30.9"
Magnitudine apparente:8.269
Distanza:179.856 parsec
Moto proprio RA:10.2
Moto proprio Dec:4.7
B-T magnitude:9.57
V-T magnitude:8.377

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 150732
TYCHO-2 2000TYC 383-1218-1
USNO-A2.0USNO-A2 0900-08886235
HIPHIP 81829
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