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  191104t20192019dcua ob 000 0 engd

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  ▼z  9780309493987
  ▼q  (paperback)

• 020

  ▼z  0309493986
  ▼q  (paperback)

• 020

  ▼a  9780309494014
  ▼q  (electronic bk.)

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  ▼a  030949401X
  ▼q  (electronic bk.)

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  ▼z  9780309493987

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  ▼a  2285530
  ▼b  (N$T)

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  ▼a  (OCoLC)1126277451

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  ▼a  N$T
  ▼b  eng
  ▼c  N$T
  ▼d  N$T
  ▼d  248023
  ▼d  CUS
  ▼d  OCLCF
  ▼e  rda
  ▼e  pn

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  ▼a  MAIN

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  ▼a  QB651

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  ▼a  523.44
  ▼2  23

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  ▼a  National Academies of Sciences, Engineering, and Medicine (U.S.).
  ▼b  Committee on Near Earth Object Observations in the Infrared and Visible Wavelengths,
  ▼e  author.

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  ▼a  Finding hazardous asteroids using infrared and visible wavelength telescopes /
  ▼c  Committee on Near Earth Object Observations in the Infrared and Visible Wavelengths, Space Studies Board, Division on Engineering and Physical Sciences.

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  ▼a  Washington, DC:
  ▼b  the National Academies Press,
  ▼c  [2019].

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  ▼a  1 online resource (xii, 61 pages):
  ▼b  color illustrations.

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  ▼a  text
  ▼b  txt
  ▼2  rdacontent

• 337

  ▼a  computer
  ▼b  c
  ▼2  rdamedia

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  ▼a  online resource
  ▼b  cr
  ▼2  rdacarrier

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  ▼a  A consensus study report of the National Academies of Sciences, Engineering, Medicine

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  ▼a  Includes bibliographical references.

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  ▼a  Introduction and background -- The components of planetary defense -- Current and near-term NEO observation systems -- The advantages of space-based infrared platforms -- Techniques to obtain NEO sizes -- The role of archival data -- Impact hazards not explicitly considered by the George E. Brown, Jr. Act -- Appendixes

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  ▼a  "Near Earth objects (NEOs) have the potential to cause significant damage on Earth. In December 2018, an asteroid exploded in the upper atmosphere over the Bering Sea (western Pacific Ocean) with the explosive force of nearly 10 times that of the Hiroshima bomb. While the frequency of NEO impacts rises in inverse proportion to their sizes, it is still critical to monitor NEO activity in order to prepare defenses for these rare but dangerous threats. Currently, NASA funds a network of ground-based telescopes and a single, soon-to-expire space-based asset to detect and track large asteroids that could cause major damage if they struck Earth. This asset is crucial to NEO tracking as thermal-infrared detection and tracking of asteroids can only be accomplished on a space-based platform. Finding Hazardous Asteroids Using Infrared and Visible Wavelength Telescopes explores the advantages and disadvantages of infrared (IR) technology and visible wavelength observations of NEOs. This report reviews the techniques that could be used to obtain NEO sizes from an infrared spectrum and delineate the associated errors in determining the size. It also evaluates the strengths and weaknesses of these techniques and recommends the most valid techniques that give reproducible results with quantifiable errors"--Publisher's description

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  ▼a  Online resource; title from PDF title page (National Academies Press, viewed November 20, 2019)

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  ▼a  Master record variable field(s) change: 650

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  ▼a  Near-earth asteroids
  ▼x  Risk assessment.

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  ▼a  Infrared astronomy.

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  ▼a  Space telescopes.

• 650

  ▼a  Near-Earth objects.

• 650

  ▼a  Asteroids
  ▼x  Collisions with Earth.

• 650

  ▼a  Asteroids
  ▼x  Collisions with Earth.
  ▼2  fast
  ▼0  (OCoLC)fst00819291

• 650

  ▼a  Near-Earth objects.
  ▼2  fast
  ▼0  (OCoLC)fst01743269

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  ▼a  Electronic books.

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  ▼t  Finding hazardous asteroids using infrared and visible wavelength telescopes.
  ▼d  Washington, DC: National Academies Press, 2019,
  ▼z  0309493986
  ▼w  (OCoLC)1123186597

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  ▼a  Consensus study report.

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  ▼3  EBSCOhost
  ▼u  https://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=2285530

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  ▼a  EBSCOhost
  ▼b  EBSC
  ▼n  2285530

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  ▼a  최영란

• 991

  ▼a  eBook

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  ▼a  92
  ▼b  N$T