Quali sono i pianeti esterni cioè oltre la fascia degli asteroidi?

Quali sono i pianeti esterni cioè oltre la fascia degli asteroidi?

Si distingue tra i pianeti interni, cioè i più vicini, e quelli esterni, i più lontani. ... I pianeti esterni sono invece il gigante Giove, Saturno, Urano, Nettuno ed infine il lontanissimo Plutone. Le orbite dei pianeti interni, da Mercurio a Marte, in confronto a quelle di Giove e Saturno.

Che cosa divide i pianeti interni da quelli esterni?

I pianeti esterni sono separati, da quelli interni, dalla cintura degli Asteroidi. Questi frammenti di roccia hanno diametri che variano da alcune migliaia di km a pochi km.

Where is the donut-shaped asteroid belt located?

• The asteroids of the inner Solar System and Jupiter: The donut-shaped asteroid belt is located between the orbits of Jupiter and Mars.

What is the average size of an asteroid in the belt?

• Ceres, the only object in the asteroid belt large enough to be a dwarf planet, is about 950 km in diameter, whereas Vesta, Pallas, and Hygiea have mean diameters of less than 600 km. The remaining bodies range down to the size of a dust particle.

What are the characteristics of a C-type asteroid?

• C-type asteroids make up more than 75 percent of known asteroids. The "C" stands for carbon, and the surfaces of these extremely dark asteroids are almost coal-black. Carbonaceous chondrite meteorites on Earth have a similar composition, and are thought to be pieces smashed off of the larger asteroids.

What are the asteroid belt families and groups?

• Families and groups. Some of the most prominent families in the asteroid belt (in order of increasing semi-major axes) are the Flora, Eunoma, Koronis, Eos, and Themis families. The Flora family, one of the largest with more than 800 known members, may have formed from a collision less than 1 billion years ago.