Update: The live shows are over, though you can still watch a replay of the Google + hangout below.

Watch live as the 3-mile-wide asteroid 4179 Toutatis zips by the Earth today with this high-definition video from the Clay Center Observatory in Brookline, Massachusetts from 2 p.m. to 8 p.m. PT (5 p.m. to 11 p.m. ET).

More Toutatis Coverage Best Images and Videos From 3-Mile-Wide Asteroid Toutatis' FlybyToutatis is a well-known asteroid because it makes a flyby of our planet roughly every four years. The passing is often very near, with the object coming within just 1 million miles of Earth – about four times the distance between our planet and the moon – back in 2004. This year's flyby will be a more ample yet still cosmically close 3.7 million miles, or about 15 times the Earth-moon distance. Toutatis was first spotted back in 1934 but then considered lost and only officially discovered in 1989.

Because it comes so close to Earth, Toutatis is classified as a potentially hazardous asteroid, though this does not imply that it will hit us. The chances of the object smashing into the planet are effectively zero for the next 600 years, but Toutatis has a somewhat chaotic orbit that makes long-term predictions difficult. The asteroid is about half the size of the one that killed the dinosaurs 65 million years ago. A separate 65-foot asteroid named 2012 XE54, discovered only a few days ago, made a close approach to Earth earlier this morning.

In case you missed it, you can also catch a replay of the live show from the Slooh Space Camera collaboration from earlier today (below). Slooh tracked the asteroid from their telescopes in the Canary Islands. Slooh president Patrick Paolucci was on hand with Astronomy magazine columnist Bob Berman to discuss the asteroid.

Video: 1) Clay Center Observatory 2) Slooh Space Camera