In 2123, the SS Mariposa launched from Earth on a colonization mission to the Ficus sector. After traveling for decades, the Mariposa reached Bringloid V, where the first of two Earth colonies was established. Soon afterwards, the Mariposa crashed on Mariposa, with the survivors establishing the second colony.
Until 2365, Earth and the United Federation of Planets had no records of any Earth colonies in the Ficus sector. In 2365, one month prior to stardate 42823, the Federation starbase 73 picked up a distress call from this sector. The USS Enterprise-D investigated the call, which came from the colonists on Bringloid V, and evacuated them. They were delivered to Mariposa, where the two colonies were reunited. (TNG: "Up The Long Ladder")