The world wiki:WikiProject Geographical coordinates/globe:

The globe: parameter specifies the planet, dwarf planet, asteroid, or natural satellite upon which the coordinates reside. Apart from earth (the default), recognized values are: mercury, venus, moon, mars, phobos, deimos, ceres, vesta, jupiter, ganymede, callisto, io, europa, mimas, enceladus, tethys, dione, rhea, titan, hyperion, iapetus, phoebe, miranda, ariel, umbriel, titania, oberon, triton, pluto, and charon.

Samples

Subject	G	Markup	Result
Kittu Crater	ganymede	{{coord|0.4|N|334.6|W|globe:ganymede}}	0.4°N 334.6°W / 0.4; -334.6
Viking 2 lander	mars	{{coord|48.269|N|225.990|W|globe:mars}}	48.269°N 225.990°W / 48.269; -225.990
Mozart Crater	mercury	{{coord|7.8|N|190.5|W|globe:mercury}}	7.8°N 190.5°W / 7.8; -190.5
Apollo 11 lander	moon	{{coord|0|40|26.69|N|23|28|22.69|E|globe:moon}}	0°40′26.69″N 23°28′22.69″E
Ksa Crater	titan	{{coord|14.0|N|65.4|W|globe:titan}}	14.0°N 65.4°W / 14.0; -65.4
Venera 13 lander	venus	{{coord|7.5|S|303|E|globe:venus}}	7.5°S 303°E / -7.5; 303
Stickney Crater	phobos	{{coord|1|N|49|W|globe:phobos}}	1°N 49°W

Very rough mapping is provided on geohack for almost all supported globes. The pop-out WikiMiniAtlas system provides limited mapping for Moon, Mars, Mercury, Venus, Io, and Titan, as of February 2021.

The maps roughly implies a coordinate reference system, but does not clearly specify one (unlike Earth's WGS84). Since the template defaults to east longitude, the |W| direction must be specified for globes that measure longitude westward. For celestial coordinates, use {{Sky}} instead.