A robotic Soviet spacecraft has been adrift in space for 53 years. It will return to Earth later this week.

Kosmos-482 launched in March 1972. If all had gone well, it would have landed on the sweltering surface of Venus and become the ninth of the uncrewed Soviet Venera missions to the planet. Instead, a rocket malfunction left it stranded in Earth orbit. Kosmos-482 has been slowly spiraling back toward our world ever since.

“It’s this artifact that was meant to go to Venus 50 years ago and was lost and forgotten for half a century,” said Jonathan McDowell, an astronomer at the Harvard & Smithsonian Center for Astrophysics who maintains a public catalog of objects in space. “And now it’s going to get its moment in atmospheric entry — albeit on the wrong planet.”

Cloaked in a protective heat shield, the spacecraft, weighing roughly 1,050 pounds, was designed to survive its plunge through the toxic Venusian atmosphere. That means there’s a good chance it will survive its dive through this one, and could make it to the surface at least partly intact.

Still, the risk of any injuries on the ground is low.

“I’m not worried — I’m not telling all my friends to go to the basement for this,” said Darren McKnight, senior technical fellow at LeoLabs, a company that tracks objects in orbit and monitors Kosmos-482 six times a day. “Usually about once a week we have a large object re-enter Earth’s atmosphere where some remnants of it will survive to the ground.”

When will Kosmos-482 come back to Earth?

Estimates change daily, but the predicted days of re-entry are currently Friday or Saturday. The New York Times will provide updated estimates as they are revised.