How Far Away is Comet 21P/Giacobini-Zinner from Earth?
The distance of Comet 21P/Giacobini-Zinner from Earth is currently 378,718,283 kilometers, equivalent to 2.531575 Astronomical Units. Light takes 21 minutes and 3.2682 seconds to travel from Comet 21P/Giacobini-Zinner and arrive to us.