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Neptune (the eighth and outermost planet) was discovered on September 23, 1846. It takes 164.79 Earth years to complete one orbit and will therefore only complete its first orbit since its discovery in 2011.

It is also worth noting that while Pluto is not longer regarded as a planet (it is now a minor planet) it was discovered in 1930 and takes 248.09 Earth years to complete an orbit.

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Q: Which planet has not completed an orbit around the sun since its discovery?
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What planet has not completed an orbit since its discovery?

The planet Neptune has not completed a full orbit since its discovery in 1846. It takes Neptune approximately 165 Earth years to complete one orbit around the Sun, so it has only completed a fraction of its first orbit since its discovery.


Which planet has not completed and orbit around the sun since its discovery?

Neptune and Pluto.


What planet completed it's first revolution around the sun since discovery?

Neptune was discovered in 1846 and it takes about 165 Earth years to orbit the Sun. So, it has just completed one orbit since discovery.


What was the final jeopardy answer for 1-3-2012?

ASTRONOMYIn July 2011 it completed its first orbit around the Sun since its discovery in 1846Neptune


What was the final jeopardy answer for 1 3 2012?

ASTRONOMYIn July 2011 it completed its first orbit around the Sun since its discovery in 1846Neptune


What is an object in orbit around the planets?

A planet in an orbit greater than any of the others.An object in orbit around a single planet is a moon or satellite of that planet.


What planet has completed less than one orbit of the sun in the last 100 years?

Planet Neptune


What planet does the orbit go around?

none the orbit is around the sun


When Cassini entered orbit around Saturn did it cause the planet's orbit to change?

Yes, when Cassini entered orbit around Saturn it did cause the planet's orbit to change.


What do you call a path a planet follows as it travels around the sun?

U answer


Which planet will complete its first orbit since its discovery in 1846?

Neptune. It takes 165 years to make one orbit.


Is there any instance where a planets moon would not orbit around it?

No, a moon is a natuaral satellite and would always be in orbit around a planet. If it did'nt orbit the planet it would fall into the planet.