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PDC 2011 Romania Print
2011 IAA Planetary Defense Conference
From Threat to Action
9-12 May 2011
Bucharest, Romania

The International Academy of Astronautics will hold its second conference on protecting our planet from impacts by asteroids and comets from 9 - 12 May 2011 in Bucharest, Romania. The 1st IAA Planetary Defense Conference: Protecting Earth from Asteroids, co-sponsored by the European Space Agency and The Aerospace Corporation, was held in 2009 in Granada, Spain.

Call for papers
Abstracts can be submitted through the online abstract submission form

Papers are solicited for the 2011 IAA Planetary Defense Conference: Protecting Earth from Asteroids sponsored by the International Academy of Astronautics (IAA), the Romanian Space Agency (ROSA), the European Space Agency (ESA), and The Aerospace Corporation (information on sponsorships is available at

The theme for the conference is “From Threat to Action.” Papers are solicited in the following areas:

Potentially hazardous Objects – Recent Progress
• Discovery statistics and projections (ground-based & space-based)
• Observational refinements including non-gravitational effects and keyholes
• Lessons learned from recent discoveries including Earth impacting 2008 TC3

Discovery and Tracking Resources and Plans
• Program plans (e.g., NASA’s NEO program, ESA’s SSA program)
• Survey completion estimates; ground-based and space-based surveys
• The status of next generation surveys (e.g., PanSTARRS and LSST)
• The discovery and tracking of 50-meter class PHOs
• Utilizing archival and historical data   

Impacts, Consequences and Education
• Historical information
• Modeling ocean and land impacts
• Consequences, impact frequency vs. size of impactor
• Planning for a short or no warning time event
• Public/media education and notification

Mission Planning & Technologies
• Viable deflection concepts and technologies; technology readiness and constraints
• Launch windows and mission designs for chemical, nuclear thermal, and ion drive missions
• Minimum-time trajectories for NEO missions
• Current capabilities for NEO deflection missions
• Matching mitigation options with available technologies and action timeline

Campaign Planning
• Human and robotic campaigns that inform all three NEO issues: science, exploration and planetary defense
• Decision tree, timelines and decision-to-act criteria (e.g., Impact probability thresholds)
• Threat evolution with time – refining the threat
• What do we do if a threat is detected tomorrow?

Legal, Policy, Political Framework for Planetary Defense
• Current international agreements and coordination activities
• Organizing, coordinating, and managing an international effort
• Impact of public opinion on decision to act and choice of mitigation method
• Planning for and consequences of a false alarm

Moving Forward on Planetary Defense
• Funding levels and priority actions to build and maintain readiness
• Current national and international funded activities that support planetary defense

Participants will develop a set of actionable recommendations that will help to improve our ability to successfully defend Earth from possible impacts and prepare for unexpected NEO-related disasters.  Throughout the conference asteroid Apophis will be considered as a reference scenario to focus the discussions (current information on Apophis is posted at

The conference will follow the model of the 1st IAA Planetary Defense Conference held in Granada, Spain in 2009--see for details on the 2009 conference.


Technical paper abstracts (250 to 500 words in length) in the areas described above or related to planetary defense will be accepted electronically through the online abstract submission form. Please be sure to designate the topic area your paper addresses (see topics listed above).

The deadline for receipt of abstracts is January 14, 2011. Letters of official acceptance and instructions for paper submission will be mailed on or before 15 February 2011.

Accepted papers (including poster papers) will be published in the official conference Proceedings. Selected peer-reviewed papers will be published in Acta Astronautica.  Authors of all poster papers will be invited to present two-minute overview presentations during the regular session. The format for papers will be that provided on the conference web site.


Undergraduate students and graduate researchers are invited to submit abstracts in two major categories:

• MAKING THE WORLD AWARE. Participants are requested to develop and study creative ideas to help deepen the understanding of the public, decision makers and academia on the nature of threats posed by Near Earth Objects.

• FROM THREAT TO ACTION: Papers may also be submitted on any of the diverse areas covered by the conference, including celestial mechanics, space engineering, astrodynamics, political sciences, social sciences, etc., as they relate to planetary defense.

The best student paper in each category will be awarded a prize.

V. Adimurthy     Indian Space Research Organization/Department of Space
William Ailor*     The Aerospace Corporation
Ivan Bekey     
Bruce Betts     The Planetary Society
Mark Boslough     Sandia National Laboratory
Juan-Luis Cano     Deimos Space
Sergio Camacho     
Ian Carnelli     European Space Agency
A.C. Charania     SpaceWorks Commercial
Pingyuan Cui     Institute of Deep Space Exploration, Beijing Institute of Technology
Jean-Michel Contant     International Academy of Astronautics
Richard Crowther     Rutherford Appleton Laboratory
Alan Fitzsimmons     Queen’s University, Belfast
Andres Galvez     European Space Agency
Mariella Graziano     GMV
Pedro J. Gutiérrez     Instituto de Astrofísica de Andalucía - CSIC
Alan Harris     German Space Agency (DLR)
Alan W. Harris     Space Science Institute
Dario Izzo     European Space Agency
Lindley Johnson     NASA NEO Observation Program Executive
Tom Jones     Astronaut, Member B612 Foundation
Alex Karl     Space Generation Advisory Council
Detlef Koschny     SSA Near-Earth Object Segment Manager, European Space Agency
Claudio Maccone  International Academy of Astronautics (IAA)     
Nahum Melamed     The Aerospace Corporation
Patrick Michel     Côte d'Azur Observatory
David Morrison     NASA Lunar Science Institute
Marius Piso     Romanian Space Agency
Dorin Prunariu     Romanian Space Agency
Rusty Schweickart     Chairman, ASE-NEO Committee
Richard Tremayne-Smith*     
Giovanni Valsecchi     IASF-Roma, INAF
Frans von der Dunk     University of Nebraska-Lincoln
Brian Weeden     Secure World Foundation
Bong Wie     Iowa State University
Ray Williamson     Secure World Foundation
Don Yeomans     Manager, NASA Near-Earth Object Program Office
*Conference Co-Chair

ESA Conference Bureau
P.O. Box 299
2200 AG Noordwijk
The Netherlands

Phone:      +31 71 565 5005
Fax:      +31 71 565 5658
Email:      ESA Conference Bureau

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