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HD 133507


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The Perkins catalog of revised MK types for the cooler stars
A catalog is presented listing the spectral types of the G, K, M, and Sstars that have been classified at the Perkins Observatory in therevised MK system. Extensive comparisons have been made to ensureconsistency between the MK spectral types of stars in the Northern andSouthern Hemispheres. Different classification spectrograms have beengradually improved in spite of some inherent limitations. In thecatalog, the full subclasses used are the following: G0, G5, G8, K0, K1,K2, K3, K4, K5, M0, M1, M2, M3, M4, M5, M6, M7, and M8. Theirregularities are the price paid for keeping the general scheme of theoriginal Henry Draper classification.

Régions H II de l'hémisphère austral
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....3....1G&db_key=AST

Photometric standard sequences in Norma iII = 320° - 340°
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观测天体数据

星座:圓規座
右阿森松:15h07m14.57s
赤纬:-57°26'22.9"
视星:7.22
距离:206.186 天文距离
右阿森松适当运动:-7.9
赤纬适当运动:-19.1
B-T magnitude:8.867
V-T magnitude:7.356

目录:
适当名称
HD 1989HD 133507
TYCHO-2 2000TYC 8702-632-1
USNO-A2.0USNO-A2 0300-22916073
HIPHIP 73989

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