Energizer

Asteroid

What is Asteroid?

•Asteroids are minor planets, especially those of the inner Solar System.

•They are also known as planetoids or minor planets.

• The mass of all the asteroids is less than that of Earth's moon. But despite their size, asteroids can be dangerous.

Where we can find Asteroids in our Solar System?

Asteroids can be found anywhere in the Solar System.

 Asteroids are also can be found between Mars and Jupiter known as the “asteroid

belt”...

Composition of Asteroids

• Most of Asteroids are made of rock, but some are composed of metals and other materials. 

Type CompositionPercentage of Asteroids

Albedo(Reflectivity)

Carbon (C-type) Carbon over 75 percent

0.03-0.09 (Very dark)

Silicate (S-type)

Metallic iron mixed with

iron-silicates and

magnesium-silicates

17 percent 0.10 -0.22 (Relatively bright)

Metallic (M-type) Iron/ nickel less than 7 percent

0.10-0.18 (Relatively bright)

Dark (D-type)

Water ice/frozen

carbon monoxide

mixed with rock

less than 1 percent

0.05 (Relatively dark and reddish)

Exceptional Asteroids

Ceres (dwarf Planet)• the largest object in the asteroid

belt, which lies between the orbits of Mars and Jupiter.

2 Pallas• the second asteroid to have been

discovered (after Ceres), and it is one of the largest asteroids in the Solar System. With an estimated 7% of the mass of the asteroid belt, it is the third-most-massive asteroid, being 10–30% less massive than Vesta.

4 Vesta• Vesta is the brightest asteroid

visible from Earth. Its maximum distance from the Sun is slightly greater than the minimum distance of Ceres from the Sun,though its orbit lies entirely within that of Ceres.

10 Hygeia• it is the largest of the class of

dark C-type asteroids with a carbonaceous surface.

704 Interamnia•  it is a very little-studied body. It is

easily the largest of the F-type asteroids, but there exist very few details of its internal composition or shape, and no light curve analysis has yet been done to determine the ecliptic coordinates of Interamnia's poles (and hence its axial tilt).

52 Europa•  is the 6th-largest asteroid in

the asteroid belt, having an average diameter of around 315 km. It is not round but is shaped like a triaxial ellipsoid of approximately 380x330x250 km.

511 Davida

• It is a C-type asteroid, which means that it is dark in colouring with a carbonaceous chondrite composition.

• Davida is one of the few main-belt asteroids whose shape has been determined by ground-based visual observation.

87 Sylvia

• the 8th-largest asteroid in the asteroid belt. It is a member of the Cybele group located beyond the core of the belt (see minor-planet groups). Sylvia is the first asteroid known to possess more than one moon.

65 Cybele

•  is one of the largest asteroids in the Solar System and is located in the outer asteroid belt. It gives its name to the Cybele family of asteroids that orbit outward from the Sun from the 2:1 orbital resonance with Jupiter.

• Cybele is a X-type asteroid, meaning that it is dark in color and carbonaceous in composition.

15 Eunomia

•  is a very large asteroid in the inner asteroid belt. It is the largest of the stony (S-type) asteroids, and somewhere between the 8th-to-12th-largest main-belt asteroid overall (uncertainty in diameters causes uncertainty in its ranking).

Uses of Asteroid in astronomy.

1.  They will tell us about the origins of our solar system.

2. They will help us understand more about the origin of life.

3. We may want to mine near-earth asteroids for metals.

4. They may someday threaten to collide with Earth. (Future Study)

Quiz

• 1. These are the minor planets, they are also known as planetoids.

• 2. The place which can be found most of the asteroids.

• 3-4. Between what Planets asteroid can be found?

• 5. The C-type of asteroid is composed of?

• 6. It is composed of Iron and Nickel, what type of asteroid is this?

• 7.  It is the largest asteroid, also known as dwarf planet.

• 8. It is known as the 6th-largest asteroid, having an average diameter of around 315 km.

• 9-10. Give two (2) uses of Asteroid in astronomy.

Video Link

• https://youtu.be/mQHfGP5kpr8• https://youtu.be/Jzyugh0dXRc• https://youtu.be/PENT_hnyO-o

The END.Thank you! 

Prepared by:Ringgit Espiritu Aguilar