Senior High School Lesson

1. SMALL BODIES IN
THE SOLAR
SYSTEM

2. SMALL
BODIES IN
THE SOLAR
SYSTEM
In 2006, IAU came up with the
classification of object that are
not identified as planets or
moons in the solar system.
These objects are categorized as
small solar system bodies, which
include asteroids, comets,
meteoroids, and dwarf planets.

3. ASTEROIDS
• Are small, which
usually more than
100 m in diameter.
• They are rocky
heavenly bodies
that are located
between the
orbits of Mars and
Jupiter

4. ASTEROIDS

5. •THERE IS AN
ESTIMATE OF
ATLEAST 2
MILLION
ASTEROIDS IN
THE SOLAR
SYSTEM

6. ASTEROIDS THAT HAD CLOSE
APPROACH TO THE EARTH
•2013 UV3

7. 367943 DUENDE

8. 2012 TC4

9. COMETS
• ARE CELESTIAL BODIES THAT ARE
REMNANTS OF THE FORMATION OF
THE SOLAR SYSTEM.
• IT COMPLETELY ORBIT THE SUN
WITHIN HUNDREDS OR THOUSANDS
OF YEARS

10. HALLEY’S COMET
IT TAKE ONLY A PERIOD OF YEARS TO REVOLVE AROUND THE SUN.

11. • THE ACTIVITY
WITHIN A COMET
COMES FROM A
CENTRAL BODY
KNOWN AS
NUCLEUS, WHICH
IS ATLEAST 1 TO 10
KM IN DIAMETER.

12. • AS COMETS APPROACH EARTH OR MOVE IN THE
SOLAR SYSTEM, A HALO IS USUALLY SEEN AS A
RESUT OF THE ESCAPING GAS THAT CARRIES DUST
PARTICLES FROM THE SURFACE OF THE COMET.
• AS THEY COME CLOSE TO THE SUN, SOME
COMETS FORM TAILS OF ATLEAST MILLIONS OF
KILOMETERS IN LENGTH.
• THE TAILS USUALLY POINTS AWAY FROM THE SUN
AS A RESULT OF RADIATION PRESSURE BY THE
RADIANT ENERGY AND THE SOLAR WIND
CONSISTING OF CHARGED PARTICLES COMING
FROM THE SUN.
• AS COMES MOVE AWAY FROM THE SUN, THEY
RETURN TO A MUCH COLDER STAGE AND THEIR
TAILS DISAPPEAR.

13. METEOROIDS
ARE DEBRIS OR REMNANT OF DUST
FROM COMETS AND ASTEROIDS.
THESE SMALL BODIES ARE FOUND
THROUGHOUT THE SOLAR SYSTEM
AND THEY GLOW BRIGTHLY WHEN
THEIR MOVEMENT CAUSES
FRICTION WITH ATMOSPHERE AS
THEY ARE HEATED UP

14. SHOOTING STAR
• THE TAIL FORMED
BY THE BURNING
METEOROID IN
THE
ATMOSPHERE IS
CALLED METEOR
OR SHOOTING
STAR.

15. METEORITE
THE UNBURNED METEOR THAT
TOUCHES THE SURFACE OF THE SUN

18. DWARF PLANETS
• OBJECTS THAT ORBIT
AROUND THE SUN AND
HAVE ENOUGH GRAVITY TO
MAINTAIN A SPHERICAL
SHAPE BUT NOT CAPABLE OF
CLEARING SMALLER OBJECTS
IN THE AREA OF ITS OWN
ORBIT.