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Asteroids are minor planets that are not comets. They include small solar system bodies and dwarf planets. They are often sometimes referred to as planetoids. Asteroids are the small body in the inner solar system out to the orbit of Jupiter. The small objects in the outer solar system are called comets because of their volatile-based surfaces.

There are millions of asteroids within the young Sun’s solar nebula that never grew large enough to become planets. Most of the asteroids orbit in the asteroid belt between the orbits of Mars and Jupiter or co-orbital with Jupiter. However other orbital families exist.

There are three main groups of asteroids, C-type, S-type, and M-type. They are generally identified and named with carbon-rich, stony and metallic compositions respectively.

The first asteroid was discovered in 1801 by Giuseppe Piazzi. It was initially considered to be a new planet. This was followed by the discovery of eight similar bodies. Since the discovery of the first asteroid, methods have dramatically improved.

Unit 1998 asteroids were discovered in a four step process; The region of the sky was photographed with a wide-field telescope a few hours apart, the two films of the same region were viewed under a stereoscope, once a moving body was identified its location would be measured precisely using a digitizing microscope, and lastly a computer program determined whether an apparition ties together earlier apparitions into a single orbit. Today the discovery of asteroids is completely computerized.

Since the invention of space travel, asteroids and asteroid belts can be examined. Before said time, asteroids were merely dots of light on the largest telescope. Now the shapes and terrain can be studied.

Natural Sciences Study Guide

1. Which of the following can be considered a definition of "theory?" a. A theory can be an explanation of scientific laws. b. A theory is an integrated explanation of numerous hypotheses, each supported by a large body of observations and experiments. c. A theory is a condensation and simplification of much data that previo

Impacts on the Asteroid in Earth's Atmosphere

1. Due to friction with the Earth's atmosphere, a large static electric charge could build up on our plummeting asteroid fragment. Would you expect our fragment to generate a magnetic field? Explain why or why not. 2. As the fragment falls through the atmosphere, it is heated and some of the material is vaporized. Explain

Meteorites, Asteroids, and Comets

I need help with the following question; What are the differences among meteorites, asteroids, and comets? What roles did each play in the formation of the Moon?

Asteroid Physics Problems

1. As mentioned before, our asteroid is in the shape of a sphere and has a mass of 1000 kilograms. Determine the density (in grams per cubic centimeter) of this asteroid if its diameter is known to be 1.0 meters. Useful information: 1 kg = 1000 g, 1 m = 100 cm, volume of sphere = 4/3 p r3. Remember that the radius of a sphere i

Asteroid Problem

On Wednesday 9th of November 2011 asteroid 2005 YU55 passed by the Earth at a distance of 323,469 km, which is closer than the Moon. There was no possibility of it hitting the Earth - this time. Just for interests sake, assume there was an asteroid heading for Earth, and it was necessary to blow it up, so that instead of a large

Concepts to Describe the Asteroid's Motion

[1] What concepts would you use to describe the asteroid's motion? [2] If the asteroid is moving at a constant speed in its orbit, does this also mean it is moving at a constant velocity? Explain your answer. [3] Based on your answer above, is the asteroid accelerating? Explain. [4] What force acts to hold this massive object

Analysis of asteroid impact probability

(i) Based on the characteristics of its orbit, what type of Solar System object is 2008 TC3? Explain how you have arrived at your answer. (ii) Measurements of 2008 TC3â??s orbit in October 2008 led to an initial estimate that it had a 0.3% probability of impacting the Earth in 10 yearsâ?? time. By January 2009, improved meas

Determination of Asteroid Parameters

Remember that in answering questions involving calculations you should show all working and that answers should be given to appropriate numbers of significant figures. Asteroid 2008 TC3 was determined from observations to have a semi-major axis of 1.296 AU and eccentricity of 0.303. It has a diameter of 50 m, measured to one

Total energy and momentum of the asteroid after a collision

See attached graphic. A small asteroid is moving in a circular orbit of radius R_0 about the sun. This asteroid is suddenly struck by another asteroid. (We won't worry about what happens to the second asteroid, and we'll assume that the first asteroid does not acquire a high enough velocity to escape from the sun's gravity).

Sequences and Series

Number sequences and series occur throughout the study of mathematics and take on a special variety of applications. One significant application is in the mathematics of investments that you will investigate in the final unit. Sequences occur in science as well. For example, the number of seeds in each row of a daisy has

Venus and Earth are about the same size and mass, yet carbon dioxide is a major constituent of the atmosphere of Venus, while oxygen is much more abundant in the Earth's atmosphere. Explain why the atmospheres are so different.

G. Venus and Earth are about the same size and mass, yet carbon dioxide is a major constituent of the atmosphere of Venus, while oxygen is much more abundant in the Earth's atmosphere. Explain why the atmospheres are so different. h. Explain why there are two general families of planets, rocky terrestrial and gaseo

Acceleration due to gravity and weightlessness.

5. Consider a spherical asteroid with a radius of 12 km and a mass of 3.45 x 10 to the fifteenth power kg. (a) What is the acceleration of gravity on the surface of this asteroid? (b) Suppose the asteroid spins about an axis through its center, like the Earth, with an angular speed w. What is the greatest value w can have befor

Speed of an Asteroid Impact on Earth

A NASA satellite has just observed an asteroid that is on a collision course with the Earth. The asteroid has an estimated mass, based on its size, of 5 X 10^9 Kg. it is approaching the Earth on a head-on course with a velocity of 600 m/s relative to the Earth and is now 5.0 x 10^6 km away. The average force of air resistance is

Estimate the radius of asteroid

A newly discovered faint asteroid and Mars are observed at opposition. Mars is observed to be 100 million times brighter than the asteroid. Assume Mars and the asteroid are 1.5 and 3.0 AU from the Sun respectively. (a) Estimate the radius of the asteroid if it has an albedo of 16%. (b) Estimate the radius of the asteroid if it

Physics Problems College Level 1 (Momentum and Collisions)

Show all steps (all questions): 1)Impulse and momentum change/varying force. A 10-kg asteroid is traveling through space at 2 m/s toward a spaceship. To avoid a collision, an astronaut, with the help of a backpack rocket, exerts a force of 20 N on the asteroid in the opposite direction for 5 s. (a) find the asteroid's fina

Newton's Law Questions are posed.

I need help setting up and working through three more problems. Most of them I have attempted but could not make them work. Any help is appreciated! Blocks of equal mass M sits on a plane inclined at 30 degrees to the horizontal. The coefficient of friction between the lower block (A) and the plane is 0.50 and between the upp