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HD 17320


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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.

Photometry of 50 suspected variable stars
Fifty stars have been chosen as suspected variable stars and analyzedfor variability. A large portion of this sample are stars that areeither proved active chromosphere stars or are candidates for suchactivity. The photometric data base consists of differential Vmeasurements of the Vanderbilt 16 inch (41 cm) automatic photoelectrictelescope and 25 observers at 26 observatories worldwide. Publishedphotometric data have also been utilized, with proper adjustments madeto ensure that all magnitudes are differential. Searches for photometricperiod, amplitudes, and times of minimum light showed 68 percent of thesample to be photometrically variable with periods found for 34. Twostars were deemed norvariable for the period of observation. Conclusivestatements could not be made concerning the photometric variability ofthe 14 remaining stars.

UBVRI Photometry of FKSZ Stars - Part One
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1987A&AS...70..369C&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Ocak
Sað Açýklýk:02h46m08.07s
Yükselim:-25°20'04.7"
Görünürdeki Parlaklýk:7.376
Uzaklýk:182.815 parsek
özdevim Sað Açýklýk:8.5
özdevim Yükselim:-45.3
B-T magnitude:8.843
V-T magnitude:7.498

Kataloglar ve belirtme:
Özgün isimleri
HD 1989HD 17320
TYCHO-2 2000TYC 6434-1120-1
USNO-A2.0USNO-A2 0600-01085288
HIPHIP 12920

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