Hazards: Ipv4 Address Exhaustion Book

Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Firebombing, Oil Spill, 1950 Da, Ipv4 Address Exhaustion, Low-Temperature Thermal Desorption, High Voltage, Stampede, Toilet-Related Injury, Hazards of Outdoor Activities, False Vacuum, Explosion, Doomsday Event, Man-Made Hazard, Multiway Switching, Radioactive Contamination, Road Debris, Life-Critical System, Dust Explosion, Confined Space, Gas Explosion, National Chemical Emergency Centre, Brandweerinformatiecentrum Voor Gevaarlijke Stoffen, High-Energy Visible Light, Microwave-Related Injury, Precautionary Statement, International Maritime Dangerous Goods Code, Environmentally Hazardous, Chemical Hazard, Grain Elevator Explosion. Excerpt: (29075) 1950 DA is a near Earth asteroid . It is notable for having the highest known probability of impacting Earth (although this probability remains low). 1950 DA has a rating of 2 on the Torino Scale . For a few days in December 2004 it was temporarily surpassed by 99942 Apophis and in November 2008 the much smaller object 2008 TC3 briefly had a higher probability of impact (TC3 then impacted the Earth).Discovery and name 1950 DA was first discovered on February 23, 1950 by Carl A. Wirtanen at Lick Observatory . It was observed for seventeen days and then lost until 2000, due to the large uncertainties in Wirtanen's orbital solution.Observations In 2001, 1950 DA made a close approach to the Earth coming to within 7.8 million km. It was studied by radar at the Goldstone and Arecibo observatories from March 3 to 7 2001.Asteroid 1950 DA, Arecibo Observatory radar imageThe studies showed that the asteroid has a mean diameter of 1.11.4 km. Optical lightcurve analysis by Lenka Sarounova and Petr Pravec shows that its rotation period is 2.1216 ± 0.0001 hours. Due to its short rotation period and high radar albedo , 1950 DA is thought to be fai...