--- title: Revealing Asteroids with Radar | TIME description: When Asteroid 1998 QE2 makes its closest approach to Earth on May 31, 2013, it promises to be a bonanza for radar science. canonical: https://time.com/video/Eqp10LI1/ og:title: Revealing Asteroids with Radar og:description: When Asteroid 1998 QE2 makes its closest approach to Earth on May 31, 2013, it promises to be a bonanza for radar science. og:url: https://time.com/video/Eqp10LI1/ og:image: https://cdn.jwplayer.com/v2/media/Eqp10LI1/poster.jpg?width=720 og:type: video.other twitter:card: summary_large_image twitter:title: Revealing Asteroids with Radar twitter:description: When Asteroid 1998 QE2 makes its closest approach to Earth on May 31, 2013, it promises to be a bonanza for radar science. twitter:image: https://cdn.jwplayer.com/v2/media/Eqp10LI1/poster.jpg?width=720 --- # Revealing Asteroids with Radar > Sponsored content. Supplied in partnership with TIME. 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They are at time.com/newsletters and are separate from a paid subscription. ## Video: Revealing Asteroids with Radar [Watch (HLS stream): Revealing Asteroids with Radar](https://cdn.jwplayer.com/manifests/Eqp10LI1.m3u8) (2:18)  _Published 2013-05-31. When Asteroid 1998 QE2 makes its closest approach to Earth on May 31, 2013, it promises to be a bonanza for radar science._ --- Jul 27, 2023 3:35 PM UTC --- ## More From This Series [All Videos](https://time.com/video/) [Asteroid 1998 QE2](/video/WmTSYgIq/) ### Asteroid 1998 QE2 [TIME Explains: An Asteroid Buzzes the Earth](/video/TgSKV2RZ/) ### TIME Explains: An Asteroid Buzzes the Earth [A Three-Mile-Long Asteroid Buzzes the Earth](/video/gy8VaMS5/) ### A Three-Mile-Long Asteroid Buzzes the Earth --- ## Transcript [ MUSIC ] 1998 QE2 is going to make a relatively close approach to Earth on May 31st. The orbit for this object is very well known. It'll be to the south, rising in the southeast, setting in the southwest. In late May, especially early June, it'll reach a visual magnitude of about 10 1 / 2 to 11. And that means that amateur astronomers who have four or six inch telescopes could potentially see it. It is going to come within 15 lunar distances. About 15 times the distance between the Earth and the Moon. Although it is labeled as a potentially hazardous asteroid, what that really means is that its orbit can approach within a certain distance of the Earth's orbit. For the foreseeable future, there's nothing to worry about. I mean, it's far more dangerous to walk across the street. The asteroid is believed to be about 1. 7 miles in diameter. That is about nine QE2 cruise ships end to end. It rotates with 5. 3 hours. And we know it's likely rounded. Even the most powerful optical telescopes and I'm talking even, you know, Hubble Telescope, they can only see this asteroid as a point of light. It is just too far and too small. Radar is a very powerful instrument that we use to study near Earth asteroids. Asteroid Toutatis was millions of kilometers away and we were able to resolve surface rocks. We could see boulders. There are currently only two radar facilities in the world that have sufficient sensitivity for doing regular observations of near- earth objects, Arecibo and Goldstone. It provides an extraordinary opportunity to get very detailed radar images. You are transmitting microwaves. It's propagating at a speed of light toward the asteroid. It is bouncing back. And this radar echo is containing surface features of the asteroid. It's telling us about its rotation. And it's very precisely pinpointing its distance from the radar. This is a great opportunity because, instead of sending a spacecraft to an asteroid, you are on Earth, and an asteroid is coming to you. We think we're gonna see images that'll rival the caliber of what we can get from a spacecraft fly- by mission. They really should be that detailed. And opportunities like that they, they sometimes happen a few times a year but this is the best one that we know of in 2013. ```json {"@context":"https://schema.org","@type":"VideoObject","name":"Revealing Asteroids with Radar","description":"When Asteroid 1998 QE2 makes its closest approach to Earth on May 31, 2013, it promises to be a bonanza for radar science.","thumbnailUrl":"https://cdn.jwplayer.com/v2/media/Eqp10LI1/poster.jpg?width=720","uploadDate":"2013-05-31T14:42:37.000Z","contentUrl":"https://cdn.jwplayer.com/manifests/Eqp10LI1.m3u8","embedUrl":"https://time.com/video/Eqp10LI1/","duration":"PT2M18S","potentialAction":{"@type":"SeekToAction","target":"https://time.com/video/Eqp10LI1/?jw_start={seek_to_second_number}","startOffset-input":"required name=seek_to_second_number"}} ```