An Introduction to Astrodynamics

acceleration altitude angle angular apsis assumed astrodynamics astronomical units atmosphere celestial sphere Chapter circular orbit coefficient comet components computed coordinate system defined density derived diameter differential correction direction distance drag Earth radii eccentric anomaly eccentricity ecliptic effect electrons ellipse emitted molecules Ephemeris equatorial coordinate system equatorial coordinates error formula frequency geocentric geocentric orbits gravitational heliocentric Hohmann orbit inertial integration interplanetary Jupiter Kepler's equation km/sec latitude longitude lunar mass mean measured meridian method minor planets miscellaneous constants Moon Moon's motion node object observational data Observatory obtained oncoming molecules optical orbit determination orbit plane orbital elements parabola parallax parameters perifocus perigee perihelion perpendicular perturbative forces position problem r₁ radiation ratio rectilinear reference relative right ascension rotation satellite Section semimajor axis sin² solar space vehicle speed spherical star station surface tion two-body unit vector utilized variation velocity Venus vernal equinox vis-viva