Best of AOP - Solar System

Neptune

Neptune is the most distant planet in our solar system, at 30 astronomical units (thirty times the distance from the Earth to the Sun). This was the first planet to be predicted before it was actually observed. Alexis Bouvard observed an abnormal orbit of Uranus and deduced that there must be an invisible, quite massive planet that had not yet been discovered. Indeed, Neptune is the third most massive planet in the solar system, after the two powerhouses Saturn and Jupiter.

Last Updated: 26-Jun-2014

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About This Image

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Equipment

20in RC Optical Systems telescope Operating at f/16.8 (2in AP 2x Barlow)

Paramount ME Robotic Telescope Mount

SBIG ST10XME CCD camera with color filter wheel

RGB color production was used to create this image.

Red = 200 seconds binned 1x1

Green = 200 seconds binned 1x1

Blue = 200 seconds binned 1x1

Minimum credit line: Jeff and Paul Neumann/Adam Block/NOAO/AURA/NSF