Open AccessCorrelation Between the “seeing FWHM” of Satellite Optical Observations and Meteorological Data at the OWL-Net Station, Mongolia
Author(s) -
YoungHo Bae,
Jung Hyun Jo,
Hong-Suh Yim,
YoungSik Park,
Sun-Youp Park,
H. K. Moon,
YoungJun Choi,
HyunJung Jang,
Dong-Goo Roh,
Jin Choi,
Maru Park,
Sungki Cho,
Myung-Jin Kim,
Eun-Jung Choi,
Jang-Hyun Park
Publication year - 2016
Publication title -
journal of astronomy and space sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.273
H-Index - 11
eISSN - 2093-5587
pISSN - 2093-1409
DOI - 10.5140/jass.2016.33.2.137
Subject(s) - environmental science , satellite , cloud cover , remote sensing , meteorology , relative humidity , wind speed , correlation coefficient , humidity , data set , cloud computing , geography , computer science , physics , mathematics , statistics , astronomy , operating system
Inactive space objects are usually rotating and tumbling as a result of internal or external forces. KOREASAT 1 has been\udinactive since 2005, and its drift trajectory has been monitored with the optical wide-field patrol network (OWL-Net).\udHowever, a quantitative analysis of KOREASAT 1 in regard to the attitude evolution has never been performed. Here, two\udoptical tracking systems were used to acquire raw measurements to analyze the rotation period of two inactive satellites.\udDuring the optical campaign in 2013, KOREASAT 1 was observed by a 0.6 m class optical telescope operated by the Korea\udAstronomy and Space Science Institute (KASI). The rotation period of KOREASAT 1 was analyzed with the light curves from\udthe photometry results. The rotation periods of the low Earth orbit (LEO) satellite ASTRO-H after break-up were detected\udby OWL-Net on April 7, 2016. We analyzed the magnitude variation of each satellite by differential photometry and made\udcomparisons with the star catalog. The illumination effect caused by the phase angle between the Sun and the target\udsatellite was corrected with the system tool kit (STK) and two line element (TLE) technique. Finally, we determined the\udrotation period of two inactive satellites on LEO and geostationary Earth orbit (GEO) with light curves from the photometry.\udThe main rotation periods were determined to be 5.2 sec for ASTRO-H and 74 sec for KOREASAT 1