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TOPIC: Potentially Hazardous Asteroids


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Title: A constellation of CubeSats with synthetic tracking cameras to search for 90% of potentially hazardous near-Earth objects
Author: Michael Shao, Slava G. Turyshev, Sara Spangelo, Thomas Werne

Congress mandated NASA to find 90% of near-Earth objects (NEO) with sizes over 140m that are potentially hazardous to the Earth by the year 2020. After an in-depth look at a number of alternative approaches, the National Research Council (NRC) concluded in 2010 that this goal was nearly impossible to reach by 2020. In this paper, we present a new space mission concept that is capable of addressing the challenges of this Congressional mandate. The proposed mission concept relies on two emerging technologies: the technique of synthetic tracking to detect NEOs and the new generation of small and capable interplanetary spacecraft. Synthetic tracking is a technique that de-streaks asteroid images by taking multiple fast exposures. With synthetic tracking, a 600 sec observation with a 10cm telescope, which can fit in a CubeSat, can detect a 20.5 mag moving object without losing sensitivity from streaking. Our primary science objective is to detect, track, catalogue, and characterise 90% of NEAs of H=22 mag (diameter of 140m) that could impact the Earth. We show that five 9U CubeSats equipped with a 10 cm synthetic tracking camera placed in solar orbit to form a constellation could achieve this objective in ~3 years of observing time. Furthermore, our mission will be able to address the goals of the Congressional mandate at a cost of ~10% compared to that of the space missions studied in the NRC 2010 report.

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 Asteroids may cause catastrophic loss of life in India

In a new study, scientists have identified the countries that are most likely to be worst hit by the catastrophic damage caused by asteroids. And India is one of them.
Research from the University of Southhampton have identified for the first time those which will suffer catastrophic loss of life or be so crippled it will be almost impossible for them to recover.
Overall the top 10 countries most at risk are: China, Indonesia, India, Japan, the US, the Philippines, Italy, the UK, Brazil and Nigeria.

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 NASA Survey Counts Potentially Hazardous Asteroids

Observations from NASA's Wide-field Infrared Survey Explorer (WISE) have led to the best assessment yet of our solar system's population of potentially hazardous asteroids. The results reveal new information about their total numbers, origins and the possible dangers they may pose.
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PHAs For 2011 Oct. 26

MPEC 2011 - T51



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PHAs For 2011 Sept. 26

MPEC 2011 - R47



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PHAs For 2011 Aug. 27.0

MPEC 2011 - P55



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PHAs For 2011 July 28

MPEC 2011 - O06



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PHAs For 2011 June 28

MPEC 2011 - M05



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PHAs For 2011 May 29

MPEC 2011 - K08



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PHAs For 2011 April 29

MPEC 2011 - H18



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