OS CINCO PLANETAS ANÕES DO SISTEMA SOLAR

Summary

This video explores dwarf planets in our solar system, starting with Ceres, the largest object in the asteroid belt, followed by Pluto, which was reclassified as a dwarf planet in 2006. It also covers other dwarf planets like Eris, Haumea, and Makemake, discussing their sizes, orbital periods, moons, and discoveries. The video explains the reclassification of Pluto and the criteria that led to the creation of the 'dwarf planet' category. The narrator briefly touches on the reason for the delay in posting the video, mentioning their location in Tocantins, and wraps up with a call to action.

Takeaways

• 😀 Ceres, located between the orbits of Mars and Jupiter, is the fifth-largest object from the Sun with a diameter of around 975 km. It is the largest object in the asteroid belt and was discovered in 1801.
• 😀 Ceres was considered a planet until the mid-19th century, and its orbital period is approximately 4.5 years.
• 😀 Pluto, discovered in 1930, was considered a planet until 2006. It has a diameter of about 2400 km and is the ninth body from the Sun with an orbital period of 248 years.
• 😀 Pluto has five moons, with Charon being the largest, having half of Pluto's diameter. Pluto was visited by the New Horizons probe.
• 😀 Haumea, discovered in 2004, has a diameter of 1600 km and two small moons. Its orbital period is 283 years, and its shape is elongated due to its fast rotation.
• 😀 Makemake, discovered in 2005, has a diameter of 1434 km and lacks an atmosphere. Its orbital period is 310 years, and it has one small moon.
• 😀 Makemake is the second-brightest object in the Kuiper Belt, after Pluto.
• 😀 Eris, discovered in 2005, has a diameter of approximately 2340 km, slightly smaller than Pluto, but it is 27 times more massive. It has one small moon and takes about 557 years to orbit the Sun.
• 😀 Eris played a role in Pluto's reclassification as a dwarf planet and the creation of the dwarf planet category.
• 😀 The video concludes with the mention of the five officially recognized dwarf planets and encourages viewers to watch a video for more details about Pluto's reclassification.

Q & A

What is Ceres, and where is it located in the solar system?

Ceres is a dwarf planet located between the orbits of Mars and Jupiter. It is the fifth-largest body from the Sun and has a diameter of about 975 km.

Why was Ceres considered a planet until the 19th century?

Ceres was considered a planet until the 19th century because it was initially discovered in 1801 and was the largest object in the asteroid belt at the time.

What is the orbital period of Ceres, and how does it compare to Earth's orbit?

Ceres has an orbital period of approximately 4.5 years, which is much longer than Earth's 1-year orbit around the Sun.

What makes Pluto unique among the dwarf planets?

Pluto was considered a planet until 2006 and has a diameter of about 2400 km. It has five moons, with Charon being the largest, and its orbital period around the Sun is 248 years.

What is the significance of the New Horizons mission in relation to Pluto?

The New Horizons mission, which visited Pluto, provided valuable information about Pluto's characteristics and increased our understanding of the dwarf planet.

What are the two moons of Haumea, and what is its orbital period?

Haumea, discovered in 2004, has two small moons and an orbital period of 283 years. It is known for its elongated shape due to its rapid rotation.

What is notable about the rotation speed of Haumea?

Haumea has a very rapid rotation speed of about 3 hours, which causes its unique oval shape.

What is the orbital period and size of Makemake?

Makemake was discovered in 2005 and has a diameter of approximately 1434 km. Its orbital period is 310 years, and it does not have an atmosphere.

Why is Makemake considered the second-brightest object in the Kuiper Belt?

Makemake is the second-brightest object in the Kuiper Belt, trailing only Pluto, due to its reflective surface.

What led to Pluto's reclassification from a planet to a dwarf planet?

Pluto was reclassified as a dwarf planet in 2006 due to the discovery of other similar-sized objects in its region and the creation of the dwarf planet category by the International Astronomical Union.