RV-size asteroid to get closer to Earth than the moon

News
By published

This asteroid isn't socially distancing with Earth very well.

illustration of an asteroid near Earth
An artist's rendering of a Near Earth Object (Image credit: Shutterstock)

An asteroid will get awfully close to Earth this Thursday (Sept. 24), when it whizzes by our planet closer than the moon orbits.

The asteroid — known as 2020 SW — isn't expected to collide with Earth, according to the Center for Near Earth Object Studies (CNEOS) at the Jet Propulsion Laboratory in Pasadena, California. But it will get close, passing about 16,700 miles (27,000 kilometers) away from Earth, according to the Virtual Telescope Project.

Scientists have yet to pin down the asteroid's exact size, but it's not that large, likely between 14 feet and 32 feet (4.4 and 9.9 meters) long, according to CNEOS. This potentially RV-size asteroid was discovered only last week, on Sept. 18, by the Mount Lemmon Survey in Arizona, and announced the next day by the Minor Planet Center, a NASA-funded group that monitors minor planets, comets and natural satellites. (It's not unusual to find unknown asteroids; in September alone, the Minor Planet Center has announced the discovery of 244 near-Earth objects.) 

The orbit of asteroid 2020 SW is seen here (in gray).

The orbit of asteroid 2020 SW is seen here (in gray). (Image credit: JPL/NASA)

Passing by Earth will actually be a life-changing event for asteroid 2020 SW. It's such a small asteroid that Earth's gravity is expected to change the space rock's course when it zooms by our planet at 7:18 a.m. EDT (11:18 UTC), according to EarthSky. 

After asteroid 2020 SW's close shave with Earth, it won't pay our planet another visit until June 3, 2029, according to the Jet Propulsion Laboratory.

That said, the asteroid is certainly rushing to see us this Thursday (we hope it has a face mask), traveling at a velocity of about 17,200 mph (27,720 km/h, or 7.7 km/second) relative to Earth, the Jet Propulsion Laboratory reported.

The asteroid will appear brighter as it nears Earth, but it won't be visible to the naked eye. If you want a clear view of the space rock, visit  The Virtual Telescope website, which is showing a live feed starting at 6 p.m. EDT (22:00 UTC) on Wednesday, Sept. 23.

Originally published on Live Science.

Laura Geggel
Laura Geggel
Managing Editor

Laura is the managing editor at Live Science. She also runs the archaeology section and the Life's Little Mysteries series. Her work has appeared in The New York Times, Scholastic, Popular Science and Spectrum, a site on autism research. She has won multiple awards from the Society of Professional Journalists and the Washington Newspaper Publishers Association for her reporting at a weekly newspaper near Seattle. Laura holds a bachelor's degree in English literature and psychology from Washington University in St. Louis and a master's degree in science writing from NYU.