A large asteroid discovered this month using a University of Hawaii observatory on Maui will make a close pass to the Earth on Halloween, but astronomers say there’s no need to get spooked.

Asteroid 2015 TB145, discovered Oct. 10 by post-doctoral researcher Robert Weryk using the Pan-STARRS1 Telescope atop Haleakala, will pass within about 300,000 miles of Earth, quite close on an astronomical scale. By comparison, the moon is about 239,000 miles away.

Any asteroid pass within about two lunar distances is considered an eyelash width.

The asteroid, which NASA has dubbed “the Great Pumpkin,” is already under study by telescopes around the world, and amateur astronomers should be able to spot it as it moves rapidly across the sky the night of Oct. 30-31. The close approach at 7:05 a.m. Hawaii time will give scientists a chance to study it further by radar, which could reveal features on its surface as small as 6 feet.

The asteroid is about 1,300 feet in diameter, way larger than the rock that created Meteor Crater in Arizona — estimated at 160 feet in diameter. That nickel-iron meteorite hit about 50,000 years ago at as speed of about 28,000 mph, creating the equivalent of a 10-megaton explosion.

So a collision with 2015 TB145 would be catastrophic.

“It would be a big problem if it were to hit,” said UH astronomer Richard Wainscoat, the team leader on the discovery, by telephone Thursday. “The amount of energy is enormous. But fortunately it is not going to hit.”