NORAD TLE Conversion from Osculating Orbital Element [PDF]
Journal of Astronomy and Space Sciences, 2002 The NORAD type Two Line Element (TLE) was obtained from the osculating orbital elements by an iterative approximation procedure. The mathematical model was presented and computer program was developed for the conversion.
Byoung-Sun Lee
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Primary Orbital Teratoma With Congenital Anophthalmia in a Neonate: A Rare Case With Histopathological and Radiological Correlation [PDF]
Case Reports in Ophthalmological MedicineThis case report describes a rare instance of primary orbital teratoma with anophthalmia in a neonate. A 6-day-old female presented with a congenital right orbital swelling and absence of visible ocular structures. MRI revealed a large, well-vascularized
Dejan M. Rašić +2 more
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Solar Radiation Pressure Effects on the Orbital Elements of Artificial Earth Satellite
Tikrit Journal of Pure Science, 2023 The solar radiation pressure is one of the non-conservative force perturbation effects on earth satellite. A method presented to calculate the effect of radiation pressure on orbital elements for different altitude of satellites, the necessary ...
Ahmed K. Izzet
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Neural Network based Fault Tolerant LQR Control for Orbital Maneuvering in LEO Satellites using Hall Effect Thrusters [PDF]
AUT Journal of Modeling and Simulation, 2023 This paper develops a neural network-based fault tolerant LQR control for orbital maneuvering of satellites in low altitude orbit that are subjected to disturbances like earth gravity, atmospheric drag, third body, and solar radiation.
Elham Jahanbazi +2 more
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Improving the Method of Satellite Station Keeping in Geostationary Orbit with Considerations of fuel Consumption Restrictions [PDF]
علوم، فناوری و کاربردهای فضایی, 2022 Due to the unique characteristics of the geostationary orbit and the importance of establishing a satellite in this flying corridor، it is necessary to investigate the effect of environmental disturbances on the orbital elements and to maintain the ...
Hossein Maghsoudi Dehaghani +3 more
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Observations of the Rigollet Comet from Korea and Japan [PDF]
Journal of Astronomy and Space Sciences, 2014 Since Rigollet first discovered a comet in 1939, many follow-up observations have been made, particularly in Europe. It is now known that the Rigollet comet is identical with the one observed by Herschel in 1788, and thus it is now called 35P/1939 O1 ...
Ki-Won Lee +3 more
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Correlations of Orbital Elements for Visual Double Stars [PDF]
Serbian Astronomical Journal, 2010 In this paper, the authors examine the dependence of correlation coefficients of orbital elements on the length of the orbital arc covered by measurements, on measurements of different accuracies, and on the number of measurements.
Milic, I. S., Cvetkovic, Z.
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Necessary condition for temporary asteroid capture
Open Astronomy, 2023 Asteroid capture holds great significance in understanding the origins of asteroids, the source of life, and the exploration of planetary mineral resources.
Bao Changchun, Li Zhijie, Wang Xianyu
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The Comparison of the Classical Keplerian Orbit Elements, Non-Singular Orbital Elements (Equinoctial Elements), and the Cartesian State Variables in Lagrange Planetary Equations with J2 Perturbation: Part I [PDF]
Journal of Astronomy and Space Sciences, 2011 Two semi-analytic solutions for a perturbed two-body problem known as Lagrange planetary equations (LPE) were compared to a numerical integration of the equation of motion with same perturbation force.
Jung Hyun Jo +3 more
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Approximations for Secular Variation Maxima of Classical Orbital Elements under Low Thrust
Mathematics, 2023 The reachability assessment of low-thrust spacecraft is of great significance for orbital transfer, because it can give a priori criteria for the challenging low-thrust trajectory design and optimization.
Zhaowei Wang, Lin Cheng, Fanghua Jiang
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