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HD 189855

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Pulkovo compilation of radial velocities for 35495 stars in a common system. Not Available
UBV (RI)c standard stars in the E- and F-regions and in the Magellanic Clouds - a revised catalogue. Not Available
Photometric observations of emission B-stars in the southern Milky Way In order to study the distribution of Be stars and their correlation tothe local spiral structure of the Galaxy photoelectric UBV photometrywas carried out for a total of 488 Be stars located in the southernMilky Way between galactic longitudes 315 and 45 deg. UBV magnitudes arepresented for these stars.
Photometric reductions and the lightcurve of (51) NEMAUSA The light curve of the minor planet (51) Nemausa is derived on the basisof 1779 photoelectric (B and V) observations and a photometric reductionusing a rigorous least squares method. Separate light curves are givenfor the B and V observations, respectively. An absolute B-V magnitudefor (51) Nemusa of 0.787 + or - 0.004 mag was estimated. A detaileddescription of the least squares method is presented.
UBV photometry of E region standard stars of intermediate brightness Photometry data are given for 335 stars in the nine E regions.Observations were made using a photometer and filters on the 47 cmreflector at Cape Town. The stellar dispersions are summarized. Data arepresented in tabular form.
Photometric standard stars for the UBV and (RI)KC systems. Not Available
Fainter Standards for VRI Photometry in the E Regions Not Available
Standard magnitudes in the E regions. Not Available

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观测天体数据

星座:	人馬座
右阿森松:	20^h03^m58.15^s
赤纬:	-44Â°38'19.3"
视星:	8.333
距离:	568.182 天文距离
右阿森松适当运动:	35.2
赤纬适当运动:	-20.4
B-T magnitude:	9.694
V-T magnitude:	8.446

目录:

适当名称
HD 1989	HD 189855
TYCHO-2 2000	TYC 7959-865-1
USNO-A2.0	USNO-A2 0450-38507414
HIP	HIP 98798

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