This products contains:

High resolution (2048*1024) Neptune textures
Textures in this pack are based on NASA elevation and imagery data. Colors and shades of the textures are tuned according to true-color photos made by Messenger, Viking and Cassini spacecrafts, and, of course, the Hubble Space Telescope.

Notes:

If you want to download for free, just put 0 in the "Name a fair price" box. If you want to support our work, please put the suggested amount there. This would mean us a lot, and also enable us to search for more free resources.
If you need the complete 2k Solar System 3D model, you can purchase it here -> Photorealistic Solar System 3D Model 2k Textures

Distributed under Attribution 4.0 International license: You may use, adapt, and share these textures for any purpose, even commercially.
Original source: https://www.solarsystemscope.com/textures/