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Record 1 of 13424
The Eccentric Behavior of Nearly Frozen Orbits
External Online Source: hdl:2014/44434
Author and Affiliation:
Sweetser, Theodore H.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, United States)
Vincent, Mark A.(Raytheon Co., Pasadena, CA, United States)
Abstract: Frozen orbits are orbits which have only short-period changes in their mean eccentricity and argument of periapse, so that they basically keep a fixed orientation within their plane of motion. Nearly frozen orbits are those whose eccentricity and argument of periapse have values close to those of a frozen orbit. We call them "nearly" frozen because their eccentricity vector (a vector whose polar coordinates are eccentricity and argument of periapse) will stay within a bounded distance from the frozen orbit eccentricity vector, circulating around it over time. For highly inclined orbits around the Earth, this distance is effectively constant over time. Furthermore, frozen orbit eccentricity values are low enough that these orbits are essentially eccentric (i.e., off center) circles, so that nearly frozen orbits around Earth are bounded above and below by frozen orbits.
Publication Date: Aug 11, 2013
Document ID:
20150008067
(Acquired May 15, 2015)
Subject Category: NUMERICAL ANALYSIS; SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING; ASTRODYNAMICS
Report/Patent Number: AAS 13-867
Document Type: Conference Paper
Meeting Information: 2013 AAS/AIAA Astrodynamics Specialist Conference; 11-15 Aug. 2013; Hilton Head, SC; United States
Meeting Sponsor: American Astronomical Society; Space Flight Mechanics Committee; Washington, DC, United States
American Inst. of Aeronautics and Astronautics; Astrodynamics Technical Committee; Reston, VA, United States
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 13p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ECCENTRICITY; ECCENTRIC ORBITS; STATIONARY ORBITS; SPACECRAFT MOTION; SPACECRAFT ORBITS; CLOUDSAT; CALIPSO (PATHFINDER SATELLITE); OSCILLATIONS; EARTH GRAVITATION; HARMONIC OSCILLATION; NUMERICAL ANALYSIS
Other Descriptors: SPACECRAFT; COLLISION
Availability Source: Other Sources
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