Mathematics
Scientist
Helwan Institute of Astronomy and Geophysics, Cairo, Egypt
Helwan Institute of Astronomy and Geophysics, Egypt
Cairo University, Faculty of Science, Astronomy Dept., Cairo, Egypt
National Research Institute of Astronomy and Geophysics
Helwan Institute of Astronomy, and Geophysics
Institute of Astronomy and Geophysics, Helwan, Egypt
Helwan Observatory, Egypt
National Research Institute for Geophysics and Astronomy, Helwan, Egypt
Institute for Astronomy and Geophysics, Helwan, Egypt
Air Drag Effect on the Motion of an Artificial Earth Satellite
Decrease in the Clear Air Transmission at Helwan Observatory Site
Modeling of the radial and transverse components of the albedo function
Perturbations in the perigee distance due to atmospheric drag for artificial earth satellites
Possible changes of the AES orbit caused by a passage through the moon's shadow
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