Optical and photometric studies of Earth orbiting small space objects


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Abstract

Variations of light curves for space objects are investigated. Optical observations and photometric measurements for small space debris on highly elliptical orbits (HEO) and geostationary orbits (GEO) are used to determine their orbital parameters. Light curves of small space debris with various area-to-mass ratios and orbital characteristics are discussed. Tracking of some objects shows very rapid brightness variations related to perturbations of the orbital parameters. Changes in brightness and equatorial coordinates of the studied objects are found in observational data. Our results allow improving the accuracy of space debris orbital elements.

About the authors

I. M. Selim

National Research Institute of Astronomy and Geophysics; Higher Technological Institute (HTI)

Email: afaf_m2000@yahoo.com
Egypt, Cairo; 10th Ramadan City

Afaf M. Abd El-Hameed

National Research Institute of Astronomy and Geophysics

Author for correspondence.
Email: afaf_m2000@yahoo.com
Egypt, Cairo

N. S. Bakhtigaraev

Institute of Astronomy of the Russian Academy of Sciences

Email: afaf_m2000@yahoo.com
Russian Federation, Moscow

Gamal F. Attia

National Research Institute of Astronomy and Geophysics

Email: afaf_m2000@yahoo.com
Egypt, Cairo

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