inertial coordinate system
111Jacobi integral — In celestial mechanics, Jacobi s integral represents a solution to the circular restricted three body problem of celestial mechanics. [1] The Jacobi integral is the only known integral for the 3 body restricted problem; unlike in the two body… …
112Quaternions and spatial rotation — Unit quaternions provide a convenient mathematical notation for representing orientations and rotations of objects in three dimensions. Compared to Euler angles they are simpler to compose and avoid the problem of gimbal lock. Compared to… …
113Orbital state vectors — In astrodynamics or celestial dynamics orbital state vectors (sometimes state vectors) are vectors of position ( ) and velocity ( ) that together with their time (epoch) ( ) uniquely determine the state of an orbiting body. State vectors are… …
114Four-velocity — In physics, in particular in special relativity and general relativity, the four velocity of an object is a four vector (vector in four dimensional spacetime) that replaces classical velocity (a three dimensional vector). It is chosen in such a… …
115Joseph Francis Shea — Infobox Person name = Joseph Francis Shea image size = 200px caption = Shea demonstrates a docking between the Apollo lunar module and command module birth date = birth date|1925|9|5|mf=y birth place = The Bronx, New York, USA death date= death… …
116Poles of astronomical bodies — This article is about geographic, magnetic and other poles on planets and other astronomical bodies. For the Earth s poles, see North Pole, South Pole, North Magnetic Pole, and South Magnetic Pole. See also Pole of inaccessibility. The poles of… …
117Four-vector — In relativity, a four vector is a vector in a four dimensional real vector space, called Minkowski space. It differs from a vector in that it can be transformed by Lorentz transformations. The usage of the four vector name tacitly assumes that… …
118List of USS Triton submerged circumnavigation crew — A total of 188 individuals participated in Operation Sandblast, the first submerged circumnavigation of the world of 1960, onboard the USS|Triton|SSRN 586|6. Quotation I m proud of Triton s around the world cruise, but I didn t really do that.… …
119Apollo 14 — Infobox Space mission mission name = Apollo 14 insignia = Apollo 14 insignia.png stats ref = cite web |url=http://history.nasa.gov/SP 4029/Apollo 00g Table of Contents.htm |title= Apollo by the Numbers: A Statistical Reference (SP 4029)… …
120Tait-Bryan rotations — The Tait Bryan rotations, named after Peter Guthrie Tait and George Bryan. are three elemental rotations about each one of the principal axes of a body (but not necessarily the principal axes of inertia). For a craft moving in the positive x… …
