Affiliation: | 1. Astronomy Department, National Research Institute of Astronomy and Geophysics (NRIAG), 11421 Helwan, Cairo, Egypt;2. Kottamia Center of Scientific Excellence in Astronomy and Space Science (KCScE, STDF, ASRT), Cairo, Egypt;1. Ulugh Beg Astronomical Institute, Astronomicheskaya str., 33, Tashkent 100052, Uzbekistan;2. Fesenkov Astrophysical Institute, Observatory 23, Almaty 050020, Kazakhstan |