ESA Assesses Impact Of Russian Meteor | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

** Airborne/NBAA2014 10.21.14 ** HD iPad-Friendly -- Airborne/NBAA2014 10.21.14 **
** Airborne/NBAA2014 10.20.14 ** HD iPad-Friendly -- Airborne/NBAA2014 10.20.14 **
** Airborne 10.17.14 ** HD iPad-Friendly -- Airborne 10.17.14 **

Wed, Feb 20, 2013

ESA Assesses Impact Of Russian Meteor

Largest Such Event In More Than A Century

The first firm details of the meteor impact which occurred Friday  in Russia, the largest in more than a century, are becoming clear. ESA is carefully assessing the information as crucial input for developing the Agency’s asteroid-hunting effort.

According to the ESA, at 0320 GMT on February 15, a natural object entered the atmosphere and disintegrated in the skies over Chelyabinsk, Russia. Extensive video records indicate a northeast to southwest path at a shallow angle of 20° above the horizontal. The entry speed is estimated at around 18 km/s, or more than 40,000 miles per hour. According to calculations by Peter Brown at the University of Western Ontario, Canada, drawing on extremely low-frequency sound waves detected by a global network, the object is estimated to have been about 55 feet across with a mass of about 10,000 tons when it entered the atmosphere. It exploded with a force of nearly 500 kilotons of TNT – some 30 times the energy released by the Hiroshima atomic bomb – at an altitude of under 65,000 feet.
 
With our current understanding of near-Earth objects, ESA says that events of this magnitude are expected once every several of tens to 100 years.

Detlef Koschny, who monitors near-Earth objects for ESA’s Space Situational Awareness (SSA) program, said that an the majority of the damage was caused by the airburst resulting in window breakage and some structural damage in downtown Chelaybinsk. Normally, some damage begins to occur at around five times normal air pressure at sea level. Widespread window damage is expected around 10–20 times this value. As the explosion and fireball progressed along a shallow trajectory, the cylindrical blast wave would have propagated directly to the ground and would have been intense.
 
Koschny said the terminal part of the explosion probably likely occurred almost directly over Chelyabinsk. This was perhaps the single greatest contributor to the blast damage. "We are waiting for confirmation from the Russian authorities that pieces of the object – bits of meteorite – have been found in the region," he said. "We’re unaware of any media reports of anyone or any structure being hit by any debris from the object itself."

(Graphic provided by ESA)

FMI: www.esa.int

Advertisement

More News

Game-Changing NBAA2014 Sponsor Mid-Continent Instruments and Avionics!

Innovation Brings Safe, Certified, Nanophosphate® Lithium Batteries To New Business Aircraft True Blue Power is the first company in the world to achieve FAA TSO and EASA ETSO >[...]

Airborne at NBAA--10.21.14: NBAA2014 Opens, Eclipse Update, FJ44 TBO Increase

Also: Shuster/Hart Address NBAA, Gogo Means Business, BBJ Maxes Out, Hartzell Pulls Its Weight The NBAA Opening General Session featured two well-known names from Washington. Repre>[...]

Airborne at NBAA--10.20.14: HondaJet, Honeywell Forecast, Gulfstream's G500/G600

Also: Garmin's ADS-B For BizAv, R44s For Jordan, Textron Aviation, Hartzell Props, Clarity Aloft Pro Plus At a news conference early Monday at the 2014 NBAA convention, HondaJet sa>[...]

Airborne at NBAA--10.21.14: NBAA2014 Opens, Eclipse Update, FJ44 TBO Increase

Also: Shuster/Hart Address NBAA, Gogo Means Business, BBJ Maxes Out, Hartzell Pulls Its Weight The NBAA Opening General Session featured two well-known names from Washington. Repre>[...]

ANN's Daily Aero-Linx (10.22.14)

Airport Operators Association - U.K. Founded in 1934, the Airport Operators Association (AOA) is the national voice of UK airports.>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2014 Web Development & Design by Pauli Systems, LC