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Size of Asteroids

1 AsteroidsAsteroids are a group of rocky objects that orbit the Sun between Mars and Jupiter •The majority of all asteroids lay in the asteroid belt, 2.1 to 3.3 A.U. from the Sun •Asteroids appear to be a conglomeration of distinct bodies that were never able to form a planet due to the ...


Discovery of the Asteroids Most of the asteroids are located between the orbits of Mars andJupiter. From the time of Kepler, it was recognized that this region of the Solar System represented a gap in the spacing of planetary orbits.


LG-2009-09-570-HQ — JPL 400-1344I 09/09 Asteroids, sometimes called minor planets, ar e small, rocky fragments left over from the formation of the solar system about 4.6 billion years ago.

The Main Asteroid Belt

How do we know what asteroids are made of? One way astronomers have learned about asteroid composition is through studying meteorites. When asteroids collide in the main belt, some of the fragments break off as meteoroids, the name given to the fragments while they are in space.

Asteroid Density, Porosity, and Structure

490 Asteroids III meteorites, unsampled by anything hitting Earth now, may be prevalent in the asteroid belt today. Indeed, there is a range of spectra among the S-type asteroids that show relative abundances of pyroxene and olivine with no direct analogs in our collections ( Gaffey et al., 1993).

National Optical Astronomy Observatory - Asteroid Colors ...

Asteroid Colors: Observations and Data Reduction Steven K. Croft National Optical Astronomy Observatory Setting Up Your Observations 1. Select one or more asteroids to observe from the latest observing list.

Asteroids: Mathilde, Gaspra, Ida

National Aeronautics and Space Administration ASTEROIDS are rocky fragments left over from the for­ mation of the solar system about 4.5 billion years ago.

Asteroid Compositions: Spectra

Asteroid Compositions: Spectra S. K. Croft Activity Description In this activity, you will estimate the surface composition of selected asteroids by comparing their reflectance spectra with the spectra of meteorites that probably come from the asteroids.


asteroids case neg asteroids case neg file table of contents asteroids case neg file ..... 1


Knapp, 1 Constance M. Rockosi, 3 and Jonathan Brinkmann 4 Received 2002 May 31; accepted 2002 August 5 ABSTRACT We discuss optical colors of 10,592 asteroids with known orbits selected from a sample of 58,000 moving objects observed by the Sloan Digital Sky Survey.