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Continued Fraction Evaluation of the Universal Y’s Functions 被引量:1
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作者 Mohammed Adel Sharaf abdel-naby saad saad Nihad saad Abd El Motelp 《International Journal of Astronomy and Astrophysics》 2015年第1期15-19,共5页
In the present paper, an efficient algorithm based on the continued fractions theory was established for the universal Y’s functions of space dynamics. The algorithm is valid for any conic motion (elliptic, parabolic... In the present paper, an efficient algorithm based on the continued fractions theory was established for the universal Y’s functions of space dynamics. The algorithm is valid for any conic motion (elliptic, parabolic or hyperbolic). 展开更多
关键词 UNIVERSAL KEPLER EQUATION Continued FRACTION Technique Y-Universal Function
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Two Unified Algorithms for Fundamental Planetary Ephemeris
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作者 Mohamed Adel Sharaf abdel-naby saad saad Aisha Abdu Alshaery 《International Journal of Astronomy and Astrophysics》 2014年第4期598-606,共9页
In the present paper, we established two unified algorithms. The first algorithm is for the transformations between J2000.0 Keplerian orbital elements and B1950.0 elements, while the second is for the transformations ... In the present paper, we established two unified algorithms. The first algorithm is for the transformations between J2000.0 Keplerian orbital elements and B1950.0 elements, while the second is for the transformations between the equatorial orbital elements and the ecliptic orbital elements. Mathematica Modules of the algorithms are given together with some numerical applications. 展开更多
关键词 SPHERICAL ASTRONOMY PRECESSION EPHEMERIS ORBIT Determination
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