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The point when an orbiting object is closest to the central object is called periapsis. For the specific case of planets around the Sun, the term perihelion is used as well.

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The square of the orbital period of a planet around the sun is proportional to the cube of the planet's orbital radius?

Yes, spot on, good guess . .


What Four planets called A B C and D have orbital periods as shown in the table below. Which planet is closest to the sun?

To determine which planet is closest to the Sun based on their orbital periods, we can use Kepler's Third Law, which states that the square of a planet's orbital period is proportional to the cube of its average distance from the Sun. Generally, planets with shorter orbital periods are closer to the Sun. Without the specific values from the table, we cannot identify which planet (A, B, C, or D) is closest, but the one with the shortest orbital period would be the closest to the Sun.


Which planet orbit around the sun first?

Mercury is the closest planet to the Sun and has an orbital period of 88 Earth days. (Pluto in contrast has an orbital period of about 248 Earth years.)


Is orbital radius the same as distance from the sun?

No, orbital radius and distance from the Sun are not always the same. The orbital radius refers to the average distance of an object in orbit around the Sun, such as a planet, from the Sun. However, because orbits can be elliptical, the actual distance from the Sun can vary at different points in the orbit, being closer at perihelion and farther at aphelion.


Which planet orbits the sun every 165 days?

Mercury is the planet that orbits the sun every 165 days. It is the closest planet to the sun in our solar system and has the shortest orbital period.


What planet is the fastest to revolve around the sun?

Mercury. As it is closest to the sun, it completes the fastest orbital rotation, in just 88 days.


What is the 1st closest planet to the sun?

Mercury is the closest planet to the Sun


Which planet has the shortest orbital period and how long is it?

The planet Mercury has the shortest orbit time, because it is the closest to the sun.


Which planet takes the least time to orbit the Sun?

Mercury because it is the planet closest to the sun.


What is the closest planet to the sun?

The closest planet to the sun is Mercury.


What is the planet that is closest to the sun?

The planet closest to the sun is Mercury.


What is the planet colsest to the sun?

Mercury is the planet closest to the sun in our solar system.