July1F2012.pub

Abstract

Abstract: This paper gives the position angle and separation for 181 multiple star systems measured using the video drift method from dates September 6, 2010 to July 23, 2011.767 to 2011. The multiple star systems reported on here are located between 2h 03m to 23h 07m Right Ascension and -20° to +50° degrees declination. Preference was given to multiple stars systems with fewer than 35 measurements since their discovery. Factors effecting the position angle and separation standard deviations are discussed. Statistical analysis of results indicates that standard deviations of both position angle and separation are largely due to atmospheric effects and not correlated with variables like star magnitude