Relativistic Orbits
Topic Page
Relativistic Orbits
Questions
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A 2300 kg rocket shuts off its engine 494km above earth's surface. Its velocity at burnout is 3000 m/s directly upward. Ignoring air resistance, what maximum height will the rocket reach?
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How far ahead or behind can astronomers calculate planets positions? What are limits of these calculations?
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What is the distance from the Earth's center to a point in space where the gravitational acceleration due to the Earth is 1/24 of its value at the Earth's surface?
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What are celestial mechanics?
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What causes celestial bodies to have gravity?
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How do meteoroids move?
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How can parallax be used to determine distances?
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How do you measure the parallax angle of a star?
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How do you measure the parallax of a star?
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What is tangential velocity?
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What is the difference between a linear velocity from a tangential velocity and radial velocity?
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How do we measure radial velocity of stars?
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How does a radial velocity measurement depend on inclination?
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How do you calculate the radial velocity of a galaxy?
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In a spectroscopic binary, if a pair shows a combined set of lines tonight, but a maximum split two nights later, what must its orbital period be?
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How is spectroscopic parallax is determined?
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What is spectroscopic parallax?
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Why is the astrometry method more difficult than the doppler method?
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What do you call a person who specializes in astrometry?
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If the Earth orbited the Sun at twice its current distance, what impact would this have on the accuracy of our ground-based astrometry?
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How does astrometry differ from the doppler effect?
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What is astrometry used for?
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How do you explain an eclipse?
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How many different type eclipse are there?
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Why do solar lunar eclipses occur?
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Why don't we have eclipses every month?
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Given the following, why will more lunar eclipses than solar eclipses be visible from North America in this decade?
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What causes a solar eclipse? How often do they occur?
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What are ephemerides?
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What is Jupiter's ephemeris?
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Is there such a thing as an ephemerides equation?
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How are ephemerides used?
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How far away from the earth is Halley's comet?
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Does Canada publish any Astronomical Ephemeris or Nautical Almanac annually, such as being done in USA, UK, INDIA etc?
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What is an eclipse compared to occultation?
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Why are there no planetary occultations visible from Earth between 1818 and 2065, when otherwise they are comparably frequent?
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Can we predict when Solar System objects will occult a star?
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Which method relies on the mass of a dark object revealing its presence?
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Does the moon ever eclipse, or visibly block, other planets or visible stars. If so when did/will this happen?
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The moon looks quite close to Venus at the moment. Does the moon ever eclipse Venus? How long does it last?
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What is proper motion?
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What is the star with the largest proper motion?
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What is proper motion of stars caused by?
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A star has a parallax of .19 arc seconds. The stars has a proper motion of 7.2 arc seconds per years and a radial velocity of +260 km/s. How do you find the Tangential Velocity and the total velocity of the star?
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If Kapteyn's star has a parallax angle of 0.255 arcsec, a proper motion of 8.67 arcsecs per year and a radial velocity of +246 km/s, What is the star's tangential velocity?
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What is a reference system in terms of astronomy?
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Is it possible for a moon in orbit around a planet to have a secondary moon orbiting the moon itself?
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What is the relationship between the radius and period when talking about the rotation of planets?
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Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 539 km above the earth's surface, while that for satellite B is at a height of 876 km. How do you find the orbital speed for satellite A and satellite B?
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What does orbit mean?
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What makes the planets rotate around the sun?
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Why do all planets in our solar system go around the sun in the same way?
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Question #7cd2d
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When do eclipses occur?
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What does LC mean?
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How is the speed of light measured?
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Question #99bdf
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How do you specify the size of a planet?
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Is a planet's orbital period related to the planet's size?