搜索结果: 106-120 共查到“知识库 天体力学”相关记录128条 . 查询时间(3.425 秒)
The technique of asteroid mass determination from perturbation
during close approach requires as many as possible di erent close approaches in
order to derive reliable mass of a perturber. Here are ...
MUTUAL RELATIONSHIP OF OSCILLATIONS IN THE FREQUENCY RANGE 3.6 mHz TO 22 mHz IN THE SOLAR CHROMOSPHERE
Sun chromosphere-Sun oscillations
2009/2/20
High frequency acoustic oscillations were suggested as the source
of mechanical heating in the chromosphere. In this work the radial component of
the oscillations in the frequency interval 3 mHz to ...
STUDIES OF RELATIVISTIC EFFECTS WITH RADIOASTRON SPACE MISSION (Invited review)
Gravitational lensing-quasars general-dark matter-Relativity
2009/2/13
In the review we discuss possible studies of GR phenomena such
as gravitational microlensing and shadow analysis with the forthcoming RadioAs-
tron space mission. It is well-known that gravitational...
通过讨论天体运行背景介质理论的连续轨道及离散轨道这二个研究方向的基础假设，介绍了天体运行轨道的具体方程形式及理论框架概要；进一步地通过讨论天体运行轨道Binet方程的一般形式及其行星近日点进动角的解，给出了连续轨道理论与Newton理论及Einstein广义相对论的联系与区别；通过讨论天体运行轨道的分维扩展方程，给出了包括太阳系行星、天王星卫星、地球卫星、绕月航天器等在内的离散轨道（稳定性轨道）方...
小行星撞击地球的危险性和对策
2008/1/2
由于人类自身对地球环境的破坏，已造成一系列严重的问题，例如温室效应、臭氧层空洞及各种污染，这些全球环境问题已逐步引起各国政府的高度重视。然而，我们生存的这颗星球不仅受到人类自身对环境的破坏，而且还面临着来自外空的威胁，这就是小行星和彗星对地球的撞击。今天我们对这种威胁的认识还带有某种程度的盲目性，在地球周围尚有90%的直径１公里以上的小行星、彗星未被发现，就是已发现的两百颗直径１公里以上的近地小天...
Hohmann转移释放绳系卫星的方法研究
绳系卫星 动力学 Hohmann转移
2007/12/13
借助Ｈｏｈｍａｎｎ轨道转移的思想，研究一种绳系卫星释放方法并进行动力学分析．从轨道方程和Ｋｅｐｌｅｒ方程导出轨道转移条件．由数值计算对此方法加以说明．
DISCRETE APPROXIMATIONS FOR SINGULARLY PERTURBED BOUNDARY VALUE PROBLEMS WITH PARABOLIC LAYERS, II
2007/12/11
In his series of three papers we study
singularly perturbed (SP)
boundary value problems for equations of elliptic
and parabolic type.
For small values of the perturbation parameter
parabolic bou...
DISCRETE APPROXIMATIONS FOR SINGULARLY PERTURBED BOUNDARY VALUE PROBLEMS WITH PARABOLIC LAYERS, III
2007/12/11
In this series of three papers we study
singularly perturbed (SP)
boundary value problems for equations of elliptic
and parabolic type.
For small values of the perturbation parameter
parabolic bo...