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HD 172806


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Binary stars unresolved by speckle interferometry. III
The KPNO's 4-m telescope was used in 1975-1981 to determine the epochsof 1164 speckle observations for 469 unresolved, known or suspectedbinary stars. The data, presented in tabular form, encompass visualbinaries with eccentric orbits, occultation binaries, astrometricbinaries, Hyades stars of known or suspected duplicity, and many longperiod spectroscopic binaries.

Spectral Classification of the Late Component of Stars with Composite Spectra
Not Available

Peculiar and Metallic-Line a - Stars in a Galactic Zone.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1959ApJ...129...88S&db_key=AST

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观测天体数据

星座:巨蛇座
右阿森松:18h42m06.24s
赤纬:+04°02'03.6"
视星:8.022
距离:261.097 天文距离
右阿森松适当运动:0.6
赤纬适当运动:-13.7
B-T magnitude:8.104
V-T magnitude:8.029

目录:
适当名称   (Edit)
HD 1989HD 172806
TYCHO-2 2000TYC 455-257-1
USNO-A2.0USNO-A2 0900-13473511
HIPHIP 91705

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