Ho Jin (School of Space Research, Kyung Hee University), Yongjun Song (School of Space Research, Kyung Hee University), Yongseok Lee (School of Space Research, Kyung Hee University), Kap-Sung Kim (School of Space Research, Kyung Hee University), Chung-Uk Lee (Korea Astronomy and Space Science Institute), Young-Jun Choi (Korea Astronomy and Space Science Institute), Hong-Kyu Moon (Korea Astronomy and Space Science Institute), Dong-Joo Lee (Korea Astronomy and Space Science Institute), Joh-Na Yoon (ChungBuk National University Observatory)
Keywords: Optical Systems
Abstract:
We observed brightness variations of a geostationary satellite to determine the reflectance of artificial objects versus sun phase angle. For this observation, we used two small optical telescopes with R bandpass filters. Main targets are Korean satellites and nearby objects. The maximum brightness occurred at the minimum sun phase angle as one would expect. But some double peak light curves show different features according to satellite shape and attitude. In this study, we present the light curve of satellites and compare with a brightness model. We expect that this observation study will play a basic role in research on brightness changes of satellites and other unknown objects.
Date of Conference: September 13-16, 2011
Track: Poster