Elliptical vs parabolic orbit
[DOC File]Independent Study (SpSt 997) Draft
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Comets that have orbital eccentricities, e, close to zero have nearly circular orbits, whereas comets with higher eccentricities have elliptical (or even nearly-parabolic or hyperbolic) orbits. Here again, the orbital inclination distribution of comets appears to be divided into two populations: those that have very low i, and those with i more ...
[DOC File]PHYS 228 Astronomy & Astrophysics
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Elliptical, parabolic, hyperbolic orbits PHYS 228 Astronomy & Astrophysics. Lecture Notes from Zeilik et al. Chap. 3 Dynamics of the Earth. Time and Seasons. Terrestrial Time Systems . celestial meridian. upper transit . celestial equator & poles. vernal equinox. sidereal time. local sidereal time. hour angle of the vernal equinox Solar time ...
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The landing sites were originally selected when the Transport Vehicle was in an equatorial orbit rather than the current 63.4° inclination-to-the-equatorial-plane orbit. When the orbit was modified, a concern grew of whether or not we will be able to communicate with the rovers long enough each day.
[DOC File]Federal Communications Commission | The United States of ...
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Large parabolic reflector antennas commonly used at microwave frequencies exhibit a radiation pattern consisting of a main lobe on the axis of the antenna and a series of sidelobes that generally decrease in amplitude when moving farther away from the main lobe. ... For example, an elliptical aperture antenna with major axis, a, and minor axis ...
[DOC File]10 Projectile and Satellite Motion
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In elliptical orbit, there is always a component of force along the direction of the satellite’s motion (except at the apogee and perigee) so work is done on the satellite. 67. When the velocity of a satellite is everywhere perpendicular to the force of gravity, the orbital path is a circle (see Figure 10.20).
[DOC File]The Vniversity
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At successively greater launch speeds, the ball would resolve in ever-increasing elliptical orbit until it moved so fast initally that it sailed off in an open parabolic or (if even faster) into a still flatter, hyperbolic orbit, never to come back to its starting point. This java applet let …
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