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70 Ophiuchi is a binary star system located 16.6 light years away from the Earth. It is in the constellation Ophiuchus . At magnitude 4 it appears as a dim star visible to the unaided eye away from city lights.
William Stephen Jacob (1813–1862) was an English immigrant astronomer in India, who acted as the director of the Madras Observatory from 1848 to 1859. His early claim of 1855 to have detected an exoplanet, in orbit around 70 Ophiuchi, is now thought to have been mistaken.
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"The orbit of 70 Ophiuchi". The Astronomical Journal. 17: 121. Bibcode:1897AJ.....17..121D. doi: 10.1086/102680. Moulton, F. R. (1899). "The limits of temporary stability of satellite motion, with an application to the question of the existence of an unseen body in the binary system 70 Ophiuchi". The Astronomical Journal. 20: 33.
Animated 3D map of the nearest stars, centered on the Sun. 3D red green glasses are recommended to view this image correctly. A radar map of the distances ( ) and positions ( ) of all known stellar bodies or systems within 9 light years (ly) (for within 12 ly see this map).
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Below there are lists the nearest stars separated by spectral type.The scope of the list is still restricted to the main sequence spectral types: M, K, F, G, A, B and O.It may be later expanded to other types, such as S, D or C.