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Semi-major axis
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#	Item
21	106 Rotation Velocity of a Galaxy Stars orbit the center of a galaxy with speeds that decrease as their orbital distances increase. A Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2009-12-29 14:05:56 Celestial mechanics Local Group Spiral galaxies Astrodynamics Milky Way Galaxy Cosmic distance ladder Semi-major axis Star Physics Astronomy Physical cosmology
22	80 TUGboat, Volume[removed]), No. 1 Spheres, great circles and parallels∗ Denis Roegel Add to Reading List Source URL: tug.org. Language: English - Date: 2009-07-19 19:58:27 Geodesy Elementary geometry Cartography Ellipse Latitude Great circle Scale Circle Semi-major axis Geometry Conic sections Curves
23	A Parameterization of the Chandra Point Spread Function Christopher L. Allen, Diab Jerius, and Terry Gaetz Smithsonian Astrophysical Observatory, 60 Garden St., Cambridge, MA[removed]ABSTRACT The Chandra X-ray Observatory Add to Reading List Source URL: cxc.harvard.edu Language: English - Date: 2005-04-01 17:59:21 Optics Curves Astrodynamics Celestial mechanics Ellipse Semi-major axis Point spread function Encircled energy Chandra X-ray Observatory Geometry Conic sections Space
24	Learning About Elliptical Orbits Recommended for grades 9-12 T Add to Reading List Source URL: www.as.utexas.edu Language: English - Date: 2011-05-26 14:30:02 Astrodynamics Celestial mechanics Conic sections Planetary science Johannes Kepler Elliptic orbit Semi-major axis Ellipse Orbit Space Geometry Astronomy
25	Photometry of Comet C/2013 UQ4 James Frederick, Pasadena City College Mentor Dr. Michael D. Hicks, Jet Propulsion Laboratory [removed] Add to Reading List Source URL: www.lacitycollege.edu Language: English - Date: 2014-08-22 12:34:46 Observational astronomy Comet Heliocentrism Absolute magnitude Semi-major axis Solar System Space Astronomy Celestial mechanics
26	Activity 5: Two ways to construct an ellipse. The orbits of all the planets, satellites (natural and artificial), and most comets in our solar system are ellipses. There are two ways to draw ellipses and find where the f Add to Reading List Source URL: www.polaris.iastate.edu Language: English - Date: 2005-07-25 17:40:26 Ellipse Semi-minor axis Semi-major axis Focus Eccentricity Geometry Conic sections Algebraic geometry
27	Robotic Wheeled Vehicle Ripple Tentacles Motion Planning Method Hongxiao Yu, Jianwei Gong, Karl Iagnemma Abstract—This paper describes a nonholonomic robotic wheeled vehicle ripple tentacle motion planning method, aimi Add to Reading List Source URL: web.mit.edu Language: English - Date: 2012-10-10 09:24:07 Space Conic sections Filter theory Ellipse Ripple Semi-major axis A* search algorithm Motion planning Nonholonomic system Geometry Curves Physics
28	Onboard Autonomous Rock Shape Analysis For Mars Rovers Justin Fox y [removed] Rebecca Casta˜noz Add to Reading List Source URL: ml.jpl.nasa.gov Language: English - Date: 2004-03-03 13:59:44 Analytic geometry Metrology Regression analysis Curves Roundness Ellipse Eccentricity Curve fitting Semi-major axis Geometry Algebraic geometry Conic sections
29	(Draft) Astronomy Ranking Task: Add to Reading List Source URL: astro.unl.edu Language: English - Date: 2010-02-02 18:32:16 Space Astrodynamics Planetary science Orbits Planet Semi-major axis Elliptic orbit Extrasolar planet Methods of detecting extrasolar planets Celestial mechanics Astronomy Astrology
30	(Draft) Astronomy Ranking Task: Add to Reading List Source URL: astro.unl.edu Language: English - Date: 2010-02-02 18:32:15 Planetary science Astrodynamics Exoplanetology Classical mechanics Orbit Planet Solar System Mass Semi-major axis Astronomy Celestial mechanics Space

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