These are some important things to have when you create a planet:
(I'll edit this more throughout time.)

1. First You should Put a Planet Biography, A detailed paragraph or more about the planet.

2. Then put Planet History, A paragraph or more on the planets history, and what happened before.

3. Then a Planetary environment list. This should include terrian types, and weather conditions.
Weather types include:

User Image-Desert/Sand
User Image-Snow/Blizzard
User Image-Sunny/Clear
User Image-Hot/Volcanic
User Image-Clear/Rain

4. Then you put the population. How many civilians, and the majority species.
here are some of the pics I have:

User Image
User Image
User Image
User Image

5. Finally you put the planetary Garrison, or forces present. This is Important data, so be shure to have details.