Перегляд за Автор "Burlak, N."

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  • Ескіз
    Документ
    INFLUENCE OF THE BIOLOGICAL INSECTICIDE BACTOCULICYDE ON THE SOME HYDROBIONTS OF THE RIVER STRIY
    (Печатный дом, 2007) Burlak, N.; Bocharova, V. R.; Bagaeva, O. S.; Бурлак, Н.; Бочарова, В. Р.; Багаева, О. С.
    The aim of our work was a determination of the influence of biological insecticide bactoculicyde on some hydrobionts of the river Striy. The recerch was conducted within the framework of Ecological expedition Risheleu lyceum at July 2006.
  • Ескіз
    Документ
    The observations of artificial satellites and space debris using KT-50 telescope in the Odessa University
    (Одеський національний університет імені І. І. Мечникова, 2016) Shakun, Leonid S.; Koshkin, Nikolay I.; Korobeinikova, E. A.; Melikyants, S. M.; Strakhova, S. L.; Terpan, S. S.; Burlak, N.; Golubovskaya, T. A.; Dragomiretsky, V. V.; Ryabov, A. V.; Кошкин, Николай Иванович; Кошкін, Микола Іванович
    In paper the equipment, images analysis techniques in the frame and the method of the satellite brightness estimation in the standard photometric system are describes. Within two years, on the KT-50 telescope were obtained measurements of about two hundred objects in more than 2,000 passages. The results of statistical analysis of actual data observations array in 2015 and 2016 are given.
  • Ескіз
    Документ
    The photometric model of artificial satellite AJISAI and determination of its rotation period
    (Astroprint, 2012) Korobeinikova, E. A.; Koshkin, Nikolay I.; Shakun, Leonid S.; Burlak, N.; Melikyants, S. M.; Terpan, S. S.; Strakhova, S. L.; Кошкин, Николай Иванович; Кошкін, Микола Іванович
    ABSTRACT. Photometry is used to make remote diagnostics of an artificial satellite’s motion around its centre of mass. Experimental satellite Ajisai was designed to explore the effects of the space factors, such as gravitation and magnetic fields, solar radiation and others, on its orbital motion and rotation. In the present study we consider the use of peculiar light curves of Ajisai, exhibiting a complex sequence of momentary flashes, for precise determination of the rotation period and velocity variations. For the first time, on the basis of the high-speed photometry, the model of placement of mirrors on the satellite’s surface was designed to carry out further analysis of its kinematics.
  • Ескіз
    Документ
    The research of variation of the period and precession of the rotation axis of Egs (Ajisai) satellite by using photometric measurement
    (Astroprint, 2014) Burlak, N.; Koshkin, Nikolay I.; Korobeinikova, E. A.; Melikyants, S. M.; Shakun, Leonid S.; Strakhova, S. L.; Кошкин, Николай Иванович; Кошкін, Микола Іванович
    The light curves of EGS Ajisai with temporal resolution of 20 ms referred to the time scale UTC (GPS) with an error of at most 0.1 ms were obtained. The observed flashes are produced when the mirrors which cover the spinning satellite’s surface reflect off the sunlight. In previous paper the analysis of sequence of flashes allowed of reconstructing the arrangement and orientation of the mirrors, i.e. developing an optogeometric model of the satellite (Korobeynikova et al., 2012), and to apply that model along with new photometric observations to determine the satellite’s sidereal rotational period with an accuracy that was previously unachievable. A new technique for determination of the spin-axis orientation during each passage of the satellite over an observation site was developed. The secular slowdown of the satellite’s spin rate (Рsid = 1.4858EXP(0.000041099T), where Т is measured in days counted from the date of the satellite launch) and its variations correlating with the average duration of the satellite orbit out of the Earth’s shadow were refined. New parameters of the spin-axis precession were estimated: the period Pprec = 116.44 days, αprec = 18.0h, δprec = 87.66°, the nutation angle θ = 1.78°.