What is the difference between pluto and sedna

The object, called Sedna for the Inuit goddess of the ocean, is 13 billion kilometers 8 billion miles away, in the farthest reaches of the solar system. Above: An artist's rendition shows the newly discovered planet-like object, dubbed "Sedna," in relation to other bodies in the Solar System, including Earth and its Moon, Pluto, and Quaoar.

This is likely the first detection of the long-hypothesized "Oort cloud," a faraway repository of small icy bodies that supplies the comets that streak by Earth. Other notable features of Sedna include its size and reddish color. After Mars, it is the second reddest object in the solar system. It is estimated Sedna is approximately three- fourths the size of Pluto. Sedna is likely the largest object found in the solar system since Pluto was discovered in Sedna is extremely far from the sun, in the coldest known region of our solar system, where temperatures never rise above minus degrees Celsius minus degrees Fahrenheit.

The planetoid is usually even colder, because it approaches the sun only briefly during its 10, year solar orbit. At its most distant, Sedna is billion kilometers 84 billion miles from the sun, which is times Earth's solar distance.

Scientists used the fact that even the Spitzer telescope was unable to detect the heat of the extremely distant, cold object to determine it must be less than 1, kilometers about 1, miles in diameter, which is smaller than Pluto.

Saturn is a giant planet primarily composed of hydrogen and helium. It does not have a solid surface. The planet Sedna is not actually a planet, just a small lump of ice and rock. In fact Pluto, the ninth planet in our solar system, has just been downgraded and is no longer considered a planet. Because of Sedna's frigid temperatures, the team who discovered the object named it Sedna, after the Inuit goddess of the sea from whom all sea creatures were created. Pluto is not a planet. It is considered to be a Dwarf planet like Ceres, Eris, and Sedna.

Pluto is a Dwarf Planet orbiting the Sun which is a star. Pluto is about 5, million km from the sun on average. You need two objects between which you can have differences!

Sedna has a gravity between 0. It is any natural body past the orbit of Neptune. Pluto, Eris, Sedna. Pluto isn't a planet, its a dwarf planet. This depends on whether you count Pluto as a planet or not. If you don't, then Neptune has the longest orbit period nearly Earth years. If you do, then Pluto has a orbit period of If you count Pluto, you might also count Sedna which takes 12, years. There are several other dwarf planets in addition to Pluto.

Log in. Dwarf Planet Pluto. See Answer. Best Answer. Sedna is smaller then Pluto. Study guides. Q: What is the difference between Pluto and sedna?

Write your answer Related questions. What is the distance from Pluto to Sedna? Is Quaoar or Sedna larger than Pluto? They're also irregularly shaped, not spherical like Charon. Unlike many other moons in the solar system, these moons are not tidally locked to Pluto. Dwarf planet Pluto is a member of a group of objects that orbit in a disc-like zone beyond the orbit of Neptune called the Kuiper Belt. This distant realm is populated with thousands of miniature icy worlds, which formed early in the history of our solar system about 4.

These icy, rocky bodies are called Kuiper Belt objects, transneptunian objects, or plutoids. Pluto is about two-thirds the diameter of Earth's Moon and probably has a rocky core surrounded by a mantle of water ice.

Interesting ices like methane and nitrogen frost coat the surface. Due to its lower density, Pluto's mass is about one-sixth that of Earth's Moon. Pluto's surface is characterized by mountains, valleys, plains, and craters. The temperature on Pluto can be as cold as to degrees Fahrenheit to degrees Celsius. Pluto's tallest mountains are 6, to 9, feet 2 to 3 kilometers in height.

The mountains are big blocks of water ice, sometimes with a coating of frozen gases like methane. Long troughs and valleys as long as miles kilometers add to the interesting features of this faraway dwarf planet. Craters as large as miles kilometers in diameter dot some of the landscape on Pluto, with some showing signs of erosion and filling.

This suggests tectonic forces are slowly resurfacing Pluto. The most prominent plains observed on Pluto appear to be made of frozen nitrogen gas and show no craters. These plains do show structures suggesting convection blobs of material circulating up and down.

Pluto has a thin, tenuous atmosphere that expands when it comes closer to the Sun and collapses as it moves farther away — similar to a comet. The main constituent is molecular nitrogen, though molecules of methane and carbon monoxide have also been detected.

When Pluto is close to the Sun, its surface ices sublimate changing directly from solid to gas and rise to temporarily form a thin atmosphere. Pluto becomes much colder during the part of each year when it is traveling far away from the Sun.

During this time, the bulk of the planet's atmosphere may freeze and fall as snow to the surface. It isn't known whether Pluto has a magnetic field, but its small size and slow rotation suggest little or none.

Introduction Pluto is a complex and mysterious world with mountains, valleys, plains, craters, and maybe glaciers. A 3D model of Pluto. JPL's lucky peanuts are an unofficial tradition at big mission events.

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The lander cleared enough dust from one solar panel to keep its seismometer on through the summer, allowing scientists to study three big quakes. This year, the minimum extent of Arctic sea ice dropped to 1.