A NASA mathematician whose calculations helped send the first American into orbit is being honored as the namesake for a resupply craft that will support the astronauts circling Earth today.

Should schedules hold, the S.S. Katherine Johnson, a Northrop Grumman Cygnus cargo ship, will launch to the International Space Station on Feb. 20 — 59 years to the day after Johnson’s work made John Glenn’s Mercury mission possible.