ABSTRACT

A noteworthy star in the inconspicuous constellation Ophiuchus, it lies about 34° south of Vega and 28° west of Altair. It is identified only by a catalog designation, e.g. BD+4°3561. Despite being very faint, apparent magnitude 9.54 and hence visible only with powerful binoculars or a small telescope, it has several claims upon our interest. With a parallax of 0.549'', at a distance of 5