Small Asteroid Becomes Closest Ever Seen Passing Earth

NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft is seen on display at Kennedy Space Center, Florida, US August 20, 2016. REUTERS/Mike Brown/Files
NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft is seen on display at Kennedy Space Center, Florida, US August 20, 2016. REUTERS/Mike Brown/Files
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Small Asteroid Becomes Closest Ever Seen Passing Earth

NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft is seen on display at Kennedy Space Center, Florida, US August 20, 2016. REUTERS/Mike Brown/Files
NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft is seen on display at Kennedy Space Center, Florida, US August 20, 2016. REUTERS/Mike Brown/Files

An asteroid the size of an SUV passed 1,830 miles (2,950 kilometers) above Earth, the closest asteroid ever observed passing by our planet, NASA said Tuesday.

If it had been on a collision course with Earth, the asteroid -- named 2020 QG -- would likely not have caused any damage, instead disintegrating in the atmosphere, creating a fireball in the sky, or a meteor, NASA's Jet Propulsion Laboratory (JPL) said in a statement.

The asteroid, which was about 10 to 20 feet (three to six meters) long, passed above the southern Indian Ocean on Sunday at 0408 GMT.

It was moving at nearly eight miles per second (12.3 kilometers per second), well below the geostationary orbit of about 22,000 miles at which most telecommunication satellites fly.

The asteroid was first recorded six hours after its approach by the Zwicky Transient Facility, a telescope at the Palomar Observatory at the California Institute of Technology, as a long trail of light in the sky.

The US space agency said that similarly sized asteroids pass by Earth at a similar distance a few times per year.

But they're difficult to record, unless they're heading directly towards the planet, in which case the explosion in the atmosphere is usually noticed -- as in Chelyabinsk, Russia in 2013, when the explosion of an object about 66 feet long shattered windows for miles, injuring a thousand people.

One of NASA's missions is to monitor larger asteroids (460 feet) that could actually pose a threat to Earth, but their equipment also tracks smaller ones, AFP reported.

"It's really cool to see a small asteroid come by this close, because we can see the Earth's gravity dramatically bends its trajectory," the news agency quoted Paul Chodas, the director of the Center for Near-Earth Object Studies at NASA, as saying.

According to the JPL's calculations, the asteroid turned by about 45 degrees due to Earth's gravitational pull.



Japan Launches Advanced Earth Observation Satellite on New Flagship H3 Rocket

Japan's H3 rocket No. 3 lifts off carrying an Earth observation satellite from the Tanegashima Space Center in Minamitane in Kagoshima Prefecture, southwestern Japan, July 1, 2024, in this photo taken by Kyodo. Mandatory credit Kyodo/via REUTERS
Japan's H3 rocket No. 3 lifts off carrying an Earth observation satellite from the Tanegashima Space Center in Minamitane in Kagoshima Prefecture, southwestern Japan, July 1, 2024, in this photo taken by Kyodo. Mandatory credit Kyodo/via REUTERS
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Japan Launches Advanced Earth Observation Satellite on New Flagship H3 Rocket

Japan's H3 rocket No. 3 lifts off carrying an Earth observation satellite from the Tanegashima Space Center in Minamitane in Kagoshima Prefecture, southwestern Japan, July 1, 2024, in this photo taken by Kyodo. Mandatory credit Kyodo/via REUTERS
Japan's H3 rocket No. 3 lifts off carrying an Earth observation satellite from the Tanegashima Space Center in Minamitane in Kagoshima Prefecture, southwestern Japan, July 1, 2024, in this photo taken by Kyodo. Mandatory credit Kyodo/via REUTERS

Japan deployed an upgraded Earth observation satellite for disaster response and security after it was launched on a new flagship H3 rocket Monday.
The H3 No. 3 rocket lifted off from the Tanegashima Space Center on a southwestern Japanese island and released its payload about 16 minutes later as planned, the Japan Aerospace Exploration Agency, or JAXA, said during a livestream.
The Advanced Land Observation Satellite, or ALOS-4, is tasked primarily with Earth observation and data collection for disaster response and mapmaking. It's also capable of monitoring military activity, such as missile launches, with an infrared sensor developed by the Defense Ministry, The Associated Press reported.
The rocket appeared to fly as planned, and JAXA is expected to give further details at a news conference later Monday. The launch was initially planned for Sunday but was delayed due to bad weather at the launch site.
The ALOS-4 is a successor to the current ALOS-2 and can observe a much wider area. Japan will operate both for the time being.
The launch was the third of the H3 system, after the successful one on Feb 17. and the shocking failed debut flight a year earlier when the rocket had to be destroyed with its payload — a satellite that was supposed to be the ALOS-3.
Japan sees a stable, commercially competitive space transport capability as key to its space program and national security.
JAXA and its main contractor Mitsubishi Heavy Industries have been developing the H3 launch system as a successor to its current mainstay, H-2A, which is set to retire after two more flights. MHI will eventually take over H3 production and launches from JAXA and hopes to make it commercially viable by cutting the launch cost to about half of the H-2A.