12-Story “Jupiter 21″ In Orbit at 21 East First Street

Jupiter 21. Certainly up there as one of the dumbest names for a glassy Lower East Side residential complex. But it sits at home orbiting the Avalon mothership. Nevertheless, that’s the name BFC Partners elected for 21 East First Street (aka 9-17 Second Avenue), former site of the oft-mourned Mars Bar.

The twelve-story building topped off earlier this fall, after a two-year trajectory, and is quickly taking shape. According to the Real Deal, the Jupiter 21 should cross the finish line in spring 2013. It’ll boast 13 affordable condos (nine of which are accounted for), 52 market-rate rentals, and two commercial condos. Corcoran Group has the exclusive on the property.

Nine displaced tenants will purchase new digs at $10 apiece, tax free.

Speaking of Jupiter, Gustav Holst composed an ode to the planet (“Jupiter, the Bringer of Jollity”) as part of his “Planets” orchestral suite. This piece of music is essentially the inspiration behind much of John Williams’ movie score output and heavy metal.