SW Horologii-A Mira Variable Star

摘要

Visual observations of the little studied Mira variable star SW Hor during the eighteen-year interval 1986 through 2003 are presented,. These provide the basic parameters of its variability, information that had previously been lacking from the catalogue data. An extreme visual magnitude range of 9,9 to fainter than 15 is found and a mean period of 28.3 ± 13 days determined. Elements for maximum brightness are JD 2447124 + 28.3 ± 13 days.