Transcript File

Raynaldo 6B
Asteroids properties and definition
Asteroids size and mass
characteristics
 Asteroids can reach as large as Ceres also considered as
the dwarf planet, Almost all Asteroids are irregularly shaped
although a few spherical/ circle.
 Most asteroids are quite small, under 1 kilometer in size
 The largest asteroid is Ceres, with a diameter of 940 km
 Only 200,000 are known, but billions possibly exist
 The mass of all the asteroids added together would be less
than the mass of the Moon
Asteroids distance from the sun
 Asteroid belts: Astronomers measure distances in our solar
system in units of the Earth-Sun distance, which is 150 million
kilometers. They call this an astronomical unit or AU, that lies
between mars and Jupiter. Some observer have never found out
if some asteroids hit the sun but some asteroids also hit the sun
and some scientist never predicted what really happened. The
Asteroid belt have been entering the inner solar system and
something that makes them out of their original orbit. It is
actually difficult for something that is orbiting to fall all the way
into the sun. This is because of a property of orbiting objects
called angular momentum. Angular momentum is a sort of
measure of how much something is rotating around a central
point.
Asteroids distance between the
sun
 The distance of Asteroid closest to a planet is Jupiter and mars, he first
asteroid (Ceres) was discovered on Jan. 1, 1801, by Giuseppe Piazzi at
Palermo, Italy. Asteroids rotate in central axis, some asteroids have
moon like planets and some small asteroids covering around them. Also
like planets, their orbits keep them about the same distance from the
sun at all times, From the cosmic dust that formed the sun and the
planets of our solar system. Along with comets, they’re sort of like the
building blocks of the solar system. We can investigate the effects of
resonances by modeling the orbit of a point mass (the asteroid) under
the combined gravitational pull of the Sun and Jupiter. To make the
problem simpler, we will assume that the Sun and Jupiter have circular
orbits about the center of mass of the Sun-Jupiter system, and that the
orbit of the asteroid lies in the same plane as the orbits of Jupiter and
the Sun.
Color and temperature
 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 (SDSS). This is more than ten
times larger sample that includes both orbital parameters and
multi-band photometric measurements than previously
available. We confirm that asteroid dynamical families, defined
as clusters in orbital parameter space, also strongly segregate
in color space.
 TEMPERATURE: The temperature of the asteroid belt varies. It
can range from something on the order of 200 K (−73 °C) near
the inner edge (about 2.2 AU) down to 165 K (−108 °C) near
the outer edge (about 3.2 AU. Links can be found below for
more information.
Motion, rotation, revolution
 The rotations of asteroids larger than 40 km in diameter have a
distribution close, that suggests that they are ally evolve crash
left. Either original bodies of the asteroid main belt or its largest,
Small asteroids show significant excesses of both slow and fast
rotations, a “barrier” against spins faster than 12 rotations per
day, and some of them are binary systems on inner-planetcrossing orbits with a characteristic fast rotation of their primaries.
Asteroids take 2 to 18 hours to fully form from the same dust and
gas that the sun and other planets are formed by.
Asteroid belts
 The asteroid belt is divided into an inner belt and an outer
belt. The inner belt, which is made up of asteroids that are
within 250 million miles (402 million km) of the Sun, contains
asteroids that are made of metals.
 The outer belt, which includes asteroids 250 million miles
(402 million km) beyond the Sun, consists of rocky asteroids.
These asteroids appear darker than the asteroids of the inner
belt, and are rich in carbon.
These will be some videos
Asteroid collision
 The effect of collision between asteroids depends on the
sizes of the bodies involved. If a very small asteroid hits
larger one, it will produce a crater on the surface. This crater
will be about 10 times the size of the incoming bodies. As
asteroids are much smaller than planets, the material blasted
out of the crater will escape and move off onto an
independent orbit around the sun. this orbit will, be very
similar to that impacted asteroid. A bigger impactor can break
up the asteroids that it hits. So much energy is used to this
that the resulting fragments cannot escape from gravitational
field.