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HD 163697

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관련 글
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사진

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관련 글

Photometry of astrometric reference stars UBVRI, DDO, and uvby, H-beta photometry of astrometric reference starsis presented. Spectral types and luminosity classifications made fromthe colors are used to determine their spectroscopic parallaxes. In thispaper, colors for 309 stars in 25 regions are given, and classificationsfor 210 stars have been made. These stars form reference frames in theAllegheny Observatory Multichannel Astrometric Photometer astrometricprogram, and in the Praesepe cluster reduced by Russell (1976). It isfound that the present photometric spectral types are reliable to within2.5 spectral subclasses.
Spectral types and luminosity classifications of MAP region stars using UBVRI and DDO photometry Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1989AJ.....98.1768C&db_key=AST
Period change in the eclipsing binary V566 Oph. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977PASP...89...47D&db_key=AST
Curva di luce ed orbita fotoelettrica della variabile ad eclisse V 566 Ophiuchi Not Available

관련 링크

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관측 및 측정 데이터

별자리:	뱀주인자리
적경:	17^h57^m19.88^s
적위:	+04Â°53'14.8"
가시등급:	8.665
거리:	156.74 파섹
적경상의 고유운동:	-17.3
적위상의 고유운동:	-14.5
B-T magnitude:	9.433
V-T magnitude:	8.729

천체목록:

일반명	(Edit)
HD 1989	HD 163697
TYCHO-2 2000	TYC 425-22-1
USNO-A2.0	USNO-A2 0900-11032132
HIP	HIP 87901

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