Last Updated On: January 1, 2021

What is the order of the planets?

Our solar system has eight planets; although previously there were 9, Pluto is no longer considered a planet because it doesn’t meet the International Astronomical Union’s requirements to be considered as such, so its name was reduced to “dwarf planet” in 2006.

The eight planets that orbit around our Sun can be ordered in different ways, taking into account various criteria to locate one before the other. Some criteria can be: by size, by temperature, by distance from the Sun, and others.

What is the order of the planets from the Sun?

Considering the Sun as the central reference point, the order of the planets, according to their distance (in kilometers and miles), is as follows.

Mercury

Mercury is the closest planet to the Sun, with a distance that varies between 46 million and 70 million kilometers—also expressed in miles, from 29 million to 43 million. Its orbit around the Sun is about 87.97 Earth days. Its temperature varies according to the day and night, ranging from -173 °C (100 K; -280 °F) to 427 °C (700 K; 800 °F)

Venus

It is the second planet, after Mercury. It is located about 108 million kilometers (67 million miles) away. Venus completes an orbit around the Sun every 224.7 Earth days, and its average temperature is about 464 °C (737 K; 867 °F).

Earth

Our planet Earth is the third from the Sun, located at about 150 million kilometers, equivalent to 93 million miles. The Earth spins entirely around the Sun in 365 days. The average temperature is about 14°C.

Mars

The list follows with Mars, being the fourth planet from the Sun, is located about 230 million kilometers, or about 143 million miles. The “red planet” also orbits around the Sun every 320 days. Mars has an average temperature of between -143°C (-225°F) and 30°C (54°F).

Jupiter

Jupiter represents the fifth planet from the Sun and is located at a distance of approximately 778 million kilometers or 483 million miles. Jupiter completes an orbit around the Sun every 11.86 Earth years, or once every 4330 days. It has an average temperature of 238°F (-150°C).

Saturn

It is the sixth planet from the Sun, located at a distance of 1.4 billion kilometers, equivalent to 860 million miles. On the planet Saturn, the average temperature reaches about -285°F (-176°C).

Uranus

Uranus is the seventh planet from the Sun, located at a distance of approximately 3 billion kilometers (2 billion miles). Every 30688 days, Uranus makes a complete turn to the Sun. On this planet, the average temperature is about -353°F (-213°C).

Neptune

It is the eighth planet in our solar system, located from the Sun, and represents the most distant planet. It is located at a distance of approximately 4.5 billion kilometers, or 2.8 billion miles. It completes one orbit around the Sun in 164.8 years. The average temperature on Neptune is about -200°C (-392°F).

What is the order of the planets from largest to smallest?

The following is a list of the planets, ordered by the size of their diameter, from largest to smallest.

Jupiter

The planet with the largest diameter is Jupiter, with 142800 kilometers, or 88731 miles. Jupiter’s size, relative to Earth, is 11.2 times larger. It has a mass equal to that of 318 times our planet and has 97 moons rotating around it, the most famous of which is Europa.

Saturn

After Jupiter, Saturn is the second-largest planet, according to its diameter, of about 120000 kilometers (or 74564 miles). Saturn is 9.4 times bigger than our planet. To have the mass of Saturn, it would be necessary to join the Earth 95.1 times. This planet has more than 80 moons.

Uranus

Uranus is the third-largest planet in diameter, at 52,000 kilometers (32311 miles). Uranus is four times the size of Earth. Uranus’s mass is equal to 14.54 times that of Earth. Also, it has 27 known moons.

Neptune

Neptune has a diameter of 48400 kilometers (30074 miles), which places it in the fourth position among the largest planets. It is 3.79 times larger than our planet. It is necessary to join 17 times the Earth to have as a result the mass of Neptune. It has 14 known moons, among which we can cite Naiad, Despina, Galatea, and Larissa.

The Earth

The planet Earth occupies fifth place, with a diameter of about 12756 kilometers or 7926 miles. It has a moon that revolves around it.

Venus

After the Earth is located Venus, with a diameter of 12104 kilometers (7521 miles), Venus is smaller than our planet, reaching 94.5% of its size. This planet is characterized by having no moon.

Mars

Mars, “the red planet,” has a diameter of 6794 kilometers (or 4222 miles), which places it in the largest planets’ penultimate position. Mars is a little more than half the size of Earth. It has two moons: Deimos and Phobos.

Mercury

The last position of the largest planets in our solar system is Mercury, with a diameter of 4878 kilometers, or 3031 miles. Mercury is small, only 38% of the size of the Earth. Mercury, like Venus, has no moon.

Why is Pluto not on this list?

In 2006, the International Astronomical Union downgraded Pluto to a “dwarf planet” because it did not meet the three criteria that the IAU uses to define planets.

It was notably disqualified as a planet because Pluto had no orbital dominance, which means that a candidate planet would have to remove the smaller bodies around it, either by impact or by gravitational capture.