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HD 316178


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The Henry Draper Extension Charts: A catalogue of accurate positions, proper motions, magnitudes and spectral types of 86933 stars
The Henry Draper Extension Charts (HDEC), published in the form offinding charts, provide spectral classification for some 87000 starsmostly between 10th and 11th magnitude. This data, being highlyvaluable, as yet was practically unusable for modern computer-basedastronomy. An earlier pilot project (Roeser et al. 1991) demonstrated apossibility to convert this into a star catalogue, using measurements ofcartesian coordinates of stars on the charts and positions of theAstrographic Catalogue (AC) for subsequent identification. We presenthere a final HDEC catalogue comprising accurate positions, propermotions, magnitudes and spectral classes for 86933 stars of the HenryDraper Extension Charts.

SANTIAGO 91, a right ascension catalogue of 3387 stars (equinox J2000).
The positions in right ascension of 3387 stars belonging to the Santiago67 Catalogue, observed with the Repsold Meridian Circle at Cerro Calan,National Astronomical Observatory, during the period 1989 to 1994, aregiven. The average mean square error of a position, for the wholeCatalogue, is +/-0.009 s. The mean epoch of the catalogue is 1991.84.

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관측 및 측정 데이터

별자리:뱀주인자리
적경:17h43m20.71s
적위:-27°14'31.2"
가시등급:8.836
거리:500 파섹
적경상의 고유운동:-11.7
적위상의 고유운동:-13.2
B-T magnitude:10.498
V-T magnitude:8.974

천체목록:
일반명   (Edit)
HD 1989HD 316178
TYCHO-2 2000TYC 6836-591-1
USNO-A2.0USNO-A2 0600-28353110
HIPHIP 86730

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