Star baller Joakim Noah — whose New York Knicks acquisition is part of Phil Jackson’s strategy to create a “self-actualizing,” championship-worthy basketball team — has bought a penthouse apartment in Chelsea for $5.8 million, Gimme Shelter has learned.

The three-bedroom, 3½-bathroom bachelor pad is at 555 W. 23rd St.

“He likes its proximity to practice, and the fact that he can have late-night and early-morning hoop practice before and after games at Chelsea Piers, which is like an extension of the building,” our spy says.

Noah, who holds French, Swedish and US citizenship thanks to his French father and Swedish mom, was known for his social activism and consciousness in Chicago; he played for the Bulls from 2007 until earlier this year. He feels right at home in New York.

“It’s not about legacy, it’s not about none of that,” he told ESPN in 2014. “I don’t care about that. It’s about helping people. At the end of the day, that, to me, is bigger than basketball.”

Noah’s 2,297-square-foot home comes with a 2,000-square-foot terrace with views of the Hudson River and the city skyline from floor-to-ceiling glass windows.

The terrace includes a built-in hot tub, gas grill, wet bar, pergola, self-watering planters and surround sound.

Inside, there’s a chef’s kitchen with a wine refrigerator, a gas fireplace and wide-plank walnut floors.

Building amenities include a 12,000-square-foot sun deck with fountains, a gym, a residents’ lounge and a garage. Noah was repped in the deal by Douglas Elliman broker Leticia Busso.

Douglas Elliman’s Tal Alexander, Oren Alexander, Ian Slater and Jared Schwadron had the listing.