What size would Neptune be from Triton, and would any clouds be visible in Triton's sky?

Answer 1

http://space.jpl.nasa.gov/cgi-bin/wspace?tbody=899&vbody=801&month=12&day=18&year=2007&hour=00&minute=00&rfov=10&fovmul=-1&bfov=30
Here´s a clue as to what you would see. You would probably be able to make out clouds (Neptunian of course). From Triton Neptune would take up 8 degrees of sky. That´s slightly less than the width of the palm of your hand held out at arms lenghts. That´s big...

Answer 2

The radius of Neptune is 24,750 km, and Triton is 333,00 km from Neptune. The angular size of Neptune as seen from Triton is therefore 2*arctan(24.75/333)=8.5 degrees.
As a point of comparison, the full moon is approximately 0.5 degrees across as seen from Earth.
As previously mention, Triton has no atmosphere, so there would be no clouds.

Answer 3

Neptune is a giant compared to triton and also triton has no atmosphere,

here is an interesting read about Triton,, it discusses its age,

http://www.universetoday.com/2007/11/27/how-old-is-tritons-surface/

NEPTUNE

http://photojournal.jpl.nasa.gov/targetFamily/Neptune

Answer 4

See for yourself in this solar system simulator.
30 degree FOV:
http://space.jpl.nasa.gov/cgi-bin/wspace?tbody=899&vbody=801&month=12&day=18&year=2007&hour=00&minute=00&fovmul=1&rfov=30&bfov=30&brite=1

compare that with looking at the moon from the earth with the same 30 degree FOV:
http://space.jpl.nasa.gov/cgi-bin/wspace?tbody=301&vbody=399&month=12&day=18&year=2007&hour=00&minute=00&fovmul=1&rfov=30&bfov=30&brite=1

BTW, the representation of clouds in Neptune in the simulation is accurate (based on flyby data from Voyager, and Hubble images).

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