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HD 157396


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Search for stars with intrinsic polarization.
Not Available

Photoelectric photometry of M-type stars
UBVRI photoelectric photometry was obtained for 110 M-type starscontained in the Caltech Two-Micron Survey and the revised AFGL Catalog.Of the 110 stars, 58 have a color index (B-R) greater than or equal to 4mag. A graph is given of (V-R) versus (V-I) for the present stars.

The stellar component of the galaxy as seen by the AFGL infrared sky survey
The noise-limited magnitudes for the Air Force Geophysical Laboratory(AFGL) Infrared Sky Survey have been estimated by direct comparison withground-based observations. Using these limiting magnitudes, 'pruned'versions of the AFGL catalog have been generated. Infrared observationsof all the stellar objects seen at 11, 20, or 27 microns and astatistical sample of the stars seen only at 4 microns are reported.Analysis of the observations leads to estimates of the absolute 4 and 10microns magnitudes and space densities for the two clases of objects.The expected results from the Infrared Astronomical Satellite arereexamined.

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다음 그룹에 속해있음:


관측 및 측정 데이터

별자리:뱀주인자리
적경:17h22m55.25s
적위:+00°52'23.7"
가시등급:9.521
적경상의 고유운동:-8.1
적위상의 고유운동:15
B-T magnitude:11.902
V-T magnitude:9.718

천체목록:
일반명   (Edit)
HD 1989HD 157396
TYCHO-2 2000TYC 401-977-1
USNO-A2.0USNO-A2 0900-09693921

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