Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Textbook Question
Chapter 13, Problem 28E
What is the period of revolution about the Sun for an asteroid with a semi-major axis of 3 AU in the middle of the asteroid belt?
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Chapter 13 Solutions
Astronomy
Ch. 13 - Why are asteroids and comets important to our...Ch. 13 - Give a brief description of the asteroid belt.Ch. 13 - Describe the main differences between C-type and...Ch. 13 - In addition to the ones mentioned in Exercise...Ch. 13 - Vesta is unusual as it contains what mineral on...Ch. 13 - Compare asteroids of the asteroid belt with...Ch. 13 - Briefly describe NASA’s Spaceguard Survey. How...Ch. 13 - Who first calculated the orbits of comets based on...Ch. 13 - Describe the nucleus of a typical comet and...Ch. 13 - Describe the two types of comet tails and how each...
Ch. 13 - What classification is given to objects such as...Ch. 13 - Describe the origin and eventual fate of the...Ch. 13 - What evidence do we have for the existence of the...Ch. 13 - Give brief descriptions of both the Kuiper belt...Ch. 13 - Give at least two reasons today’s astronomers are...Ch. 13 - Suppose you were designing a spacecraft that would...Ch. 13 - Suppose you were designing a spacecraft that would...Ch. 13 - Suppose a comet were discovered approaching the...Ch. 13 - We believe that chains of comet fragments like...Ch. 13 - Why have we found so many objects in the Kuiper...Ch. 13 - Why is it hard to give exact diameters for even...Ch. 13 - Refer to Example 13.1. How would the calculation...Ch. 13 - Refer to Example 13.1. How would the calculation...Ch. 13 - The calculation in Example 13.1 refers to the...Ch. 13 - If the Oort cloud contains 1012 comets, and ten...Ch. 13 - The mass of the asteroids is found mostly in the...Ch. 13 - Make a similar estimate for the mass of the Kuiper...Ch. 13 - What is the period of revolution about the Sun for...Ch. 13 - What is the period of revolution for a comet with...
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- What is the period of revolution for a comet with aphelion at 5 AU and perihelion at the orbit of Earth?arrow_forwardWhat is the average distance from the Sun (in astronomical units) of an asteroid with an orbital period of 8 years?arrow_forwardGive a brief description of the asteroid belt.arrow_forward
- Suppose an asteroid has a semimajor axis of 4 AU. How long does it take the asteroid to go around the Sun? (a) 2 years (b) 4 years (c) 6 years (d) 8 yearsarrow_forwardAn asteroid is observed to be on a superior orbit with a synodic period of 466.6 days. What are the sidereal orbital period and semi-major axis of this asteroid?arrow_forwardThe asteroid Ceres has a mass of 9.39 ✕ 1020 kg and an average radius of about 473 km (4.73 ✕ 102 km). What is its escape velocity (in m/s)? (Hints: Use the formula for escape velocity)arrow_forward
- over a period of time an asteroid's mass increases by 40% while its speed decreased by 25%. By what percentage was the asteroid's kinetic energy decreased?arrow_forwardWhat is the mass of the asteroid?arrow_forwardWhat would be the period of a (hypothetical) solar-system planet whose orbit has a semimajor axis of 4 AU? Of an asteroid with a semimajor axis of 10 AU?arrow_forward
- A new asteroid is discovered to have an orbital period of 4.685 yrs. Calculate the average orbital radius in kilometers.arrow_forwardA 0.872 km diameter asteroid will make a crater about 10 km in diameter. Let the asteroid have a density of 3000 kg/m3 and impact the surface at 22 km/sec. Assuming a spherical asteroid, what is the kinetic energy (in joule) of the asteroid? Convert the answer to megatons of TNT, where 1 megaton is about 4 × 1015 joule. For comparison, the most energetic weapon in the human arsenal is about 100 megatons.arrow_forwardA comet has a period of 70.3 years and moves in an elliptical orbit in which its perihelion (closest approach to the Sun) is 0.620 AU. Find the semimajor axis of the comet and an estimate of the comet's maximum distance from the Sun, both in astronomical units. (a) the semimajor axis of the comet (in AU) (b)an estimate of the comet's maximum distance (in AU) from the Sunarrow_forward
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