List of planetary governments

Listed below are the planetary governments of the Orion Arm. A planetary government is defined as being an independent astropolitical entity governing an area on a single celestial body large enough to be spherical (i.e. asteroids do not count as planetary governments). This means that more than one planetary governments can exist on one body. A government that has colonised the natural satellites of its main body still counts as a planetary government.

Short and Formal Names		System	Capital	Population
	Proxima United Proxima Federation	Proxima Centauri system	Nova, Proxima	4,590,290,000
	Aurora Aurora Colonial Republic	Everest system	Jersey Bay, Aurora	107,380,000
	Isfahan Union of Isfahan	Gamma Virginis system	Ardashir, Isfahan	104,610,000
	Endurance Federative Republic of Endurance	Outreach system	Whitehaven, Endurance	101,940,000
	Helvetica State of Helvetica	Constance system (formerly 82 G. Eridani)	New Geneva, Helvetica	88,290,000
	Titan Republic of Titan	Sol system	Ligeia City, Titan	43,670,000
	New California New California Republic	Vegas system	Burnett, New California	42,040,000
	Sidewinder Republic of Sidewinder	Antioch system	St. Peter, Sidewinder	41,850,000
	Pan-Slavonia Pan-Slavic Federation	Ostmark system	Dusha, Novaslavoniya	39,510,000
	Ararat Union of Ararat	Everest system		39,490,000
	Owens Owens Federal Union	Delaware system	Concordia, Owens	31,720,000
	African Union	Kilimanjaro system	Umoja, Mandela	31,140,000
	Mariner Republic	Sol system	Candor, Mars	24,500,000
	Trafalgar Federal State of Trafalgar	Antioch system	Samarkand, Trafalgar	19,610,000
	Free Lunar Federation	Sol system	New London, Luna	17,200,000
	Tyrrhena People's Republic of Tyrrhena	Sol system	Ivanograd, Mars	16,960,000
	Arcturus III Arcturus Federation	Arcturus system	Hayk, Arcturus III	16,560,000
	Bishop's World Protectorate of Bishop's World	61 Cygni system	Connor, Bishop's World	14,910,000
	Charybdis and Scylla Federation of Charybdis and Scylla	Ilium system	Messina, Scylla	10,270,000
	Atlas Federation of Atlas	Procyon system		6,160,000
	Orpheus Orpheus Consortium	Calliope system		5,790,000
	Europa Free Cities of Europa	Sol system	Pacifica, Europa	5,130,000
	Ireland Free Irish Republic	Morrigan system	Killeshandra, Ciara	3,980,000
	Wolfsberg Wolfsberg Planetary State	Fernmark system	Wittgenstein, Wolfsberg	2,940,000
	Pluto and Charon Confederation of Pluto and Charon	Sol system		2,880,000
	Navajo Nation	Harmony system		1,780,000
	Devon Federated Colonies of Devon	Alderney system	St. John, Devon	1,270,000
	Iroquois Confederacy	Harmony system		838,000
	Celestia Republic of Celestia	Sol system	Eden, Venus	740,000
	Mercury United Mercurian Confederation	Sol system	Asmodius, Mercury	431,000
	Ojibwe Nation	Harmony system		371,000
	Al-Israa' Al-Israa' Republic	Alchiba system (formerly Alpha Corvi)	Ajman, Al-Israa'	141,000
	Great Lakota Nation	Harmony system		139,000
	Cree Nation	Harmony system		94,000
	Dodecanese Federation	Sol system	Colossus, Venus	87,000
	Skadi Skadi Colonial Territory	Antioch system	Barnard Station, Skadi	76,000
	Anchorage III Colony of Anchorage III	Anchorage system		48,000
	Perseus IV Perseus IV Confederacy	Perseus system (formerly Iota Persei)		27,000
	Asgard Free City of Asgard	Sol system	Asgard IV, Venus	26,000
	Cyrus Cyrus Colonial Union	Indus system	Amarillo Station, Cyrus	24,400
	BX-101 b Colony of BX-101 b	BX-101 system	Site 101-5, BX-101 b	23,000
	Aldebaran III United Northern Cities of Aldebaran	Aldebaran system	Sanctuary, Aldebaran III	21,000
	Plenitude Colony of Plenitude	Moeller system		19,000
	Sahrawi Sahrawi Arab Democratic Republic	Polisario system	Zemla, El Wali	16,000
	Triumvirate Colonies of Triumvirate	Fernmark system	Rhaetia Station, Coliseum	14,000
	BX-104 d Colony of BX-104 d	BX-104 system	Site 104-1, BX-104 d	1,000