Neptune is in a nearly circular orbit at 30.06 AU from the Sun, while the Earth is in a nearly circular orbit at 1 AU. So the closest point between the Earth and Neptune is about 29 AU, while the farthest distance is about 31 AU. As of today (December 8, 2008) Neptune is 30.44 AU away from Earth.
The FREE, Open-Source planetarium program Stellarium is available for Linux, Windows or Mac from www.stellarium.org.
The planet 5 AU from the sun is Jupiter.
Mars of course.....
Earth is 1 AU from the Sun. There is no planet at an orbit of 2.5 AU. (Mars orbits at 1.5 AU and Jupiter at 5.2 AU).
The distance of planet X from the sun can vary depending on its orbit. An astronomical unit (AU) is the average distance between the Earth and the Sun, about 93 million miles. If you know the specific distance of planet X from the sun, you can convert it to astronomical units by dividing by the average distance of 1 AU.
Earth is the planet that is one astronomical unit (AU) away from the sun. An AU is the average distance from Earth to the Sun, which is about 93 million miles or 150 million kilometers.
The planet 5 AU from the sun is Jupiter.
Jupiter is roughly 5.2 AU from the sun.
There are four planets located 1 AU or less from the sun: Mercury, Venus, Earth, and Mars. This information is determined by measuring the average distance of each planet from the sun in astronomical units (AU), with 1 AU being the average distance from Earth to the sun.
The planet that is about 30 AU (astronomical units) from the sun is Neptune. Neptune is the eighth and farthest known planet from the sun in our solar system.
Mars of course.....
Mercury averages about 0.35 AU from the Sun, and Saturn is about 9.5AU from the Sun. So depending on where each planet is in its orbit (or more specifically, where Mercury is in its orbit) Saturn will be anywhere from 9.2 AU to 9.8 AU from Mercury.
About 5,2 times that average distance from the Earth to the Sun (or 5,2 AU)
Uranus is around 19 AU from the sun, theres no planet that is 1.9 AU from the sun. the closest to this is Mars, at 1.5 AU.
Mercury: 0.387 AU Venus: 0.723 AU Earth: 1.000 AU Mars: 1.524 AU Jupiter: 5.204 AU Saturn: 9.582 AU Uranus: 19.229 AU Neptune: 30.104 AU
Venus is 0.723332 AU (semi-major axis) from the Sun.
Earth is 1 AU from the Sun. There is no planet at an orbit of 2.5 AU. (Mars orbits at 1.5 AU and Jupiter at 5.2 AU).
Jupiter