HD 216138

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CCD astrometry and instrumental Delta-V photometry of wide visual double stars. III - Differential measurements of often observed southern pairs
We present accurate relative positions and instrumental visual (BesselV) magnitude differences of southern wide star components. The meanaccuracy of the angular separation is 0.02 arcsecs, which corresponds to1.5 micron on the CCD chip, and of magnitude difference 0.007mag/exposure. The program pairs are targets of the HIPPARCOS mission andthey have been observed at least four times in the last 150 yrs.

UVBY photometry of HIPPARCOS stars
Photoelectric data in the uvby system have been obtained for 367southern stars of the Hipparcos Input Catalogue. Most of the stars are Fand G main sequence and fall in the magnitude range V = 9 to 10.

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Ýlgili Baðlantýlar

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sonraki gruplarýn üyesi:

Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Tukan
Sað Açýklýk:	22^h51^m22.75^s
Yükselim:	-57Â°33'27.3"
Görünürdeki Parlaklýk:	9.926
özdevim Sað Açýklýk:	5.9
özdevim Yükselim:	41.6
B-T magnitude:	10.392
V-T magnitude:	9.965

Kataloglar ve belirtme:

Özgün isimleri
HD 1989	HD 216138
TYCHO-2 2000	TYC 8830-34-1
USNO-A2.0	USNO-A2 0300-37787726
HIP	HIP 112865

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