Wikipedia:WikiProject Geographical coordinates/globe:

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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°24′N 334°36′W / 0.4°N 334.6°W / 0.4; -334.6
Viking 2 lander	mars	`{{coord\|48.269\|N\|225.990\|W\|globe:mars}}`	48°16′08″N 225°59′24″W / 48.269°N 225.990°W / 48.269; -225.990
Mozart Crater	mercury	`{{coord\|7.8\|N\|190.5\|W\|globe:mercury}}`	7°48′N 190°30′W / 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 / 0.6740806°N 23.4729694°E / 0.6740806; 23.4729694
Ksa Crater	titan	`{{coord\|14.0\|N\|65.4\|W\|globe:titan}}`	14°00′N 65°24′W / 14.0°N 65.4°W / 14.0; -65.4
Venera 13 lander	venus	`{{coord\|7.5\|S\|303\|E\|globe:venus}}`	7°30′S 303°00′E / 7.5°S 303°E / -7.5; 303
Stickney Crater	phobos	`{{coord\|1\|N\|49\|W\|globe:phobos}}`	1°N 49°W / 1°N 49°W / 1; -49

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^[update].

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.