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No, it is not. NO orbits of natural satellites are perfect circles. (And when NASA manages to achieve a perfectly circular orbit for an artificial satellite, it doesn't stay that way for very long!)
All orbits are ellipses. The Earth's orbit is pretty close to circular; it's only about a 3% eccentricity. On January 4th (or thereabouts) when Earth is closest to the Sun, it's about 91 million miles away; on July 2nd (or about) when the Earth is most distant, it's a little over 94 million miles.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoThe orbit of the Earth is approximately an ellipse, which itself is precessing around the center of gravity of the Earth-Sun system.
Additionally, there are no perfectly circular orbits, as a satellite in a perfectly circular orbit has to have and maintain an exact velocity precisely between being slow and spiralling inwards and being too fast forming an elliptical orbit. Such an exact circumstance is physically improbable.
Wiki User
∙ 11y agoNo natural gravitational orbit is perfectly circular. The Earth's distance from the sun
varies over a range of about 11/2% in the course of the year.
Wiki User
∙ 13y agoNo, the earth's orbit is more of an elipse
Wiki User
∙ 10y agoNo, because of their spinning they bulge out at the equator and have slightly flattened poles.
Wiki User
∙ 10y agoFar from it.
Wiki User
∙ 13y agoQuite eccentric.
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Is Pluto orbit close circular or quite eccentric?
Pluto has a highly eccentric orbit - it's orbital eccentricity is equal to about 0.2488. As a consequence, during parts of it's orbit around the sun, Pluto eclipses Neptune's orbit, making it closer to the sun than Neptune. The last time Pluto was closer to the sun than Neptune was between February 7, 1979 and February 11, 1999.
Do comets travel in orbits with a shape similar to the planets?
No. The planets in the Solar System all have almost circular orbits, but the orbits of comets are highly eccentric (oval-shaped). This means that while the distance a planet is from the Sun is rather constant, the path of a comet means it comes close to the Sun, and then moves far away.
Which planet's orbit appears most elliptical?
A planet has a circular orbit, with the exception of pluto. A comet has a large but eliptical orbit. An asteroid has no orbit unless it becomes a moon. A meteor has no orbit. It usually flies in a straight line either burning up in the atmosphere or impacting on a planets surface. So, A comet.
Is Hale-Bopp a planet?
No. Hale-Bopp is a comet. Comets are much smaller than planets, and travel in very eccentric orbits. This means that they come fairly close to the Sun at perihelion, and then retreat to great distances.
Do comets have highly elliptical orbits around the sun?
Virtually NOTHING in space is in a circular orbit; every body out there is in an elliptical orbit. Some are CLOSE to circular, but I don't believe than any are quite exact. Comets especially are in VERY elliptical orbits. If their orbits were even nearly circular, their ices and volatile gasses would have been evaporated long ago.
What is the motion of asteriods?
Like all orbiting bodies, an asteroid moves in an ellipse. Compared to the planets, these orbits have a higher probability of being more eccentric ("stretched out", further from being a circle). That is why some asteroids cross the orbit of the earth. Most asteroids move in near-circular orbits between Mars and Jupiter. A close approach to another asteroid or one of these planets can alter the orbit to a more eccentric one.
Which planet's orbit is most nearly circular?
Although all planets have elliptical orbits, Venus has the least eccentric orbit (eccentricity of 0.00677323, where 0 would be circular)
If the planets' orbits were circular would their distance from the sun always be the same?
Yes. However, the orbits of all planets are elliptical. Some planets, like Earth, have a very low "eccentricity", which is a measure of how non-circular they are. Earth's orbit is not quite circular, but fairly close. Other planets, like Mars, have more eccentric orbits, and their perihelion and aphelion distances are substantially different.
Is Pluto orbit close circular or quite eccentric?
Pluto has a highly eccentric orbit - it's orbital eccentricity is equal to about 0.2488. As a consequence, during parts of it's orbit around the sun, Pluto eclipses Neptune's orbit, making it closer to the sun than Neptune. The last time Pluto was closer to the sun than Neptune was between February 7, 1979 and February 11, 1999.
Why do planets have circular and elliptical motions in the solar system?
The scientific explanation lies in Kepler's laws of planetary motions, which were discovered by Newton to be linked with the law of gravity. All the planets have elliptical orbits, and many of those are close being circular.
Circular muscles that close a tube when they contract?
pyloric sphincter
Are circles of different diameters that have same center called eccentric circles?
Close - they're called concentric circles.
Do comets travel in orbits with a shape similar to the planets?
No. The planets in the Solar System all have almost circular orbits, but the orbits of comets are highly eccentric (oval-shaped). This means that while the distance a planet is from the Sun is rather constant, the path of a comet means it comes close to the Sun, and then moves far away.
Is earth's orbit around the sun circular?
Not completely, however very close.
Is earths revolution circular?
Earth's orbit (revolution) around the Sun is not circular - it's an ellipse. However, this ellipse is fairly close to a circle.
What does circular dance mean to bees?
to communicate the location of food sources close to the colony
What is the shape of their path of revolution?
If you mean planets, the orbits are technically ellipses, but very close to circular.
