A Beta Quadrant planet where Soji Asha and Agnes Jurati attend a diplomatic reception with Deltans at the start of the second season of Star Trek: Picard.
Raritan IV appears briefly in The Star Gazer, the opening episode of Picard's second season, set in 2401. With the ban on synthetic life lifted, Soji Asha is travelling on a goodwill tour to introduce her people to other worlds.
At a reception there she offers a toast to a party of Deltans, speaking partly in their own language, on the idea that real connection begins when the heart speaks. Agnes Jurati, who has come along, is at the bar, drinking heavily and fending off a persistent admirer.
The evening ends when Cristóbal Rios, now captain of the USS Stargazer, calls Jurati back to the ship to study a strange anomaly in space. That summons leads to the meeting with the Borg Queen and the season's journey into an altered timeline.