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Gemini Program Overview; IBM and the Gemini Program; As of this edit, this article uses content from "Gemini Guidance Computer", which is licensed in a way that permits reuse under the Creative Commons Attribution-ShareAlike 3.0 Unported License, but not under the GFDL. All relevant terms must be followed.
TRACE is a high-precision orbit determination and orbit propagation program. It was developed by The Aerospace Corporation in El Segundo, California. An early version ran on the IBM 7090 computer in 1964. [1] The Fortran source code can be compiled for any platform with a Fortran compiler.
Orbit modeling is the process of creating mathematical models to simulate motion of a massive body as it moves in orbit around another massive body due to gravity.Other forces such as gravitational attraction from tertiary bodies, air resistance, solar pressure, or thrust from a propulsion system are typically modeled as secondary effects.
The term "low orbit" may refer to either the altitude (minimal or global) or orbital period of the body. Historically, the SGP algorithms defines low orbit as an orbit of less than 225 minutes. Two-digit Epoch Years from 57 to 99 correspond to 1957-1999 and those from 00 to 56 correspond to 2000–2056. [16]
Orbit determination has a long history, beginning with the prehistoric discovery of the planets and subsequent attempts to predict their motions. Johannes Kepler used Tycho Brahe's careful observations of Mars to deduce the elliptical shape of its orbit and its orientation in space, deriving his three laws of planetary motion in the process.
Orbiter is a space flight simulator program developed to simulate spaceflight using realistic Newtonian physics.The simulator was released on 27 November 2000; [2] the latest edition, labeled "Orbiter 2024", was released on 31 December 2024. [3]
E.O.S.: Earth Orbit Stations is a space station construction and management simulation video game developed by Karl Buiter for Electronic Arts. [1] It was released for the Commodore 64 and Apple II in 1987.
All other instructions use this encoding for an unsigned 5-bit immediate source instead. For the operands to TBLRD and TBLWT which access program memory, only the indirect modes are allowed, and refer to addresses in code memory. A few instructions are 2 words long. The second word is a NOP, which includes up to 16 bits of additional immediate ...