Nuome is a closely Earthlike planet . . .

Until you get to the sort of physics that involves our magic

It has one big continent, with a super-Himalayan range down one side (the east), polar ice caps rather larger than Earth, an axial tilt slightly less than Earth's, and the usual range of minerals, life-forms etc.

Astronomy - also Earthlike but no constellations recognisable. Any astronomer could look at the sky and feel very familiar with the general appearance - until he looked for the familiar constellations and said "Oops! Where am I?!"
On a good night he might spot this problem very quickly when he noticed the second moon . . .

And if he looked long enough he might notice the stars making their usual slow progress across the sky - all except one, known as The Western Star or occasionally The MotherStar. That is fixed in position, and never moves - well, not to naked-eye observation - though every night it does go out for a while, regular as clockwork . . .
It makes a useful navigational reference point, and would mark "Equator, Longitude 0 degrees" if the inhabitants used such a system.

The map below shows Nuome on a VERY broad scale. More detailed maps appear elsewhere.