Celestials

Ground and Landing

Maps

A Celestial with a hex map template  a pair of maps per hex side (one North, one South), plus a pair of North and South polar maps for each hex the template occupies. For example, a one-hex moon would have eighteen maps, twelve for the hexes' six sides and one each for its top and bottom.

Coordinates

Maps are referenced by their coordinates. For latitude, start from 0 and count towards the equator. For the simple one-hex moon above, the North/South polar maps would be L0N and L0S. The pair of maps on the side of the hex would be L1N and L1S.

For longitude, count the number of hex faces (HF) starting from the topmost, centermost face of the edge and continue clockwise. From the north face, a single-hex moon has longitudes HF1, HF2, to HF6.

All together, the northern map of the first face would be L1N, HF1. The Southern map of the bottom face would be L1S, HF4.

Using this construction, it is always clear which map and hex the party will enter when leaving the edge of a map, and it is also clear which map corresponds to a given side of a hex from space.

Map Sizes

For the playtest, we're using 10x10 hex maps for each side, and a hexagonal hex map with sides 10 hexes long for the poles. Each hex is 5km.

Space Maps

The following sizes are used for space map templates:

OBJECT	HEX RADIUS
Asteroids, Gates, Singularities, Stations, Neutron Stars, other compact objects	0 (treat as starship)
Megastructures	varies wildly
Most Spherical Moons	1
Large Moon or Small Planet	2
Large Terrestrial Planet	3-9
Ice Giant planet	10-20
Giant planet	21-100
Star	80-1000