Eosphoros, aka The Morning Star
Sorry to be a party-pooper. Lucian of Samosata explored this in his True History in the 2nd Century AD. The formerly Greek ruler of the Moon starts a war with the ruler of the Sun, intention of putting a colony on the Morning Star (Eωσφόρος in the original Greek).
[Endymion]: "I once assembled all the poor people and needy persons within my dominions, purposing to send a colony to inhabit the Morning Star, because the country was desert and had nobody dwelling in it. This Phaethon envying, crossed me in my design, and sent his Hippomyrmicks to meet with us in the midway, by whom we were surprised at that time, being not prepared for an encounter, and were forced to retire: now therefore my purpose is once again to denounce* [sic] war and publish a plantation of people there".
*The original Greek in Translation 2, bouloumai authis exenegkein ton polemoi is "I deliberately intend to go to war", according to Google Translate
Endymion loses the war, but gets to participate in the colony:
The Heliotans and their colleagues have made a peace with the Selenitans and their associates upon these conditions, that the Heliotans shall cast down the wall, and deliver the prisoners that they have taken upon a ratable ransom: and that the Selenitans should leave the other stars at liberty, and raise no war against the Heliotans, but aid and assist one another if either of them should be invaded: that the king of the Selenitans should yearly pay to the king of the Heliotans in way of tribute ten thousand vessels of dew, and deliver ten thousand of their people to be pledges for their fidelity: that the colony to be sent to the Morning Star should be jointly supplied by them both, and liberty given to any else that would to be sharers in it...
OK, I hear you saying: "But this is Sol System!" Is it really? Was there a concept of "Sol System" in the 2nd Century?
Frances Hickes' 1894 translation at Project Gutenberg, https://www.gutenberg.org/files/45858/45858-h/45858-h.htm
A. M. Harmon's 1913 translation at Sacred Texts, https://www.sacred-texts.com/cla/luc/true/tru01.htm
The blockquotes are from Translation 1.