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HD 177494


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Classification and Identification of IRAS Sources with Low-Resolution Spectra
IRAS low-resolution spectra were extracted for 11,224 IRAS sources.These spectra were classified into astrophysical classes, based on thepresence of emission and absorption features and on the shape of thecontinuum. Counterparts of these IRAS sources in existing optical andinfrared catalogs are identified, and their optical spectral types arelisted if they are known. The correlations between thephotospheric/optical and circumstellar/infrared classification arediscussed.

The Distribution of the BD M-Type Stars Along the Galactic Equator.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1958ApJ...128..510N&db_key=AST

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观测天体数据

星座:天鷹座
右阿森松:19h04m46.92s
赤纬:+02°59'02.9"
视星:8.666
右阿森松适当运动:1.3
赤纬适当运动:-9.7
B-T magnitude:11.202
V-T magnitude:8.876

目录:
适当名称   (Edit)
HD 1989HD 177494
TYCHO-2 2000TYC 466-717-1
USNO-A2.0USNO-A2 0900-13830861

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