The 2011 AAS/AIAA Astrodynamics Specialist Conference will be held July 31–August 4, 2011, at the Hotel Alyeska in Girdwood, Alaska. The conference is organized by the American Astro- nautical Society (AAS) Space Flight Mechanics Committee and co-sponsored by the American Institute of Aeronautics and Astronautics (AIAA) Astrodynamics Technical Committee. Manu- scripts are solicited on topics related to space-flight mechanics and astrodynamics, including but not limited to:

• Asteroid and non-Earth orbiting missions
• Orbit determination and space-surveillance tracking
• Atmospheric re-entry guidance and control
• Attitude dynamics, determination and control
• Attitude-sensor and payload-sensor calibration
• Dynamical systems theory applied to space flight problems
• Dynamics and control of large space structures and tethers
• Earth orbital and planetary mission studies
• Flight dynamics operations and spacecraft autonomy
• Orbital debris and space environment
• Orbital dynamics, perturbations, and stability
• Rendezvous, relative motion, proximity missions, and formation flying
• Reusable launch vehicle design, dynamics, guid- ance, and control
• Satellite constellations
• Spacecraft guidance, navigation and control (GNC)
• Trajectory / mission / maneuver design and optimization

Manuscripts will be accepted based on the quality of the extended abstract, the originality of the work and/or ideas, and the anticipated interest in the proposed subject. Submissions that are based on experimental results or current data, or report on ongoing missions, are especially en- couraged.
Complete manuscripts are required before the conference. The working language for the con- ference is English.

SPECIAL SESSIONS
Proposals are being considered for suitable special sessions, such as topical panel discussions, invited sessions, workshops, mini-symposia, and technology demonstrations. A proposal for a panel discussion should include the session title, a brief description of the discussion topic(s), and a list of the speakers and their qualifications. For an invited session, workshop, mini- symposium, or demonstration, a proposal should include the session title, a brief description,
and a list of proposed activities and/or invited speakers and paper titles. Prospective special- session organizers should submit their proposals to the Technical Chairs.

VENUE
Located just 40 miles from Anchorage and the Ted Stevens Anchorage International Airport, the Alyeska Resort is near three national parks and the Kenai Peninsula, and surrounded by the Chugach Mountains. More information about the resort facilities and activities can be found at the website http://www.alyeskaresort.com.

BREAKWELL STUDENT TRAVEL AWARD
The AAS Space Flight Mechanics Committee announces the John V. Breakwell Student Travel Award. This award provides travel expenses for up to three (3) U.S. and Canadian students presenting at this conference. Students wishing to apply for this award are strongly advised to submit their completed manuscript by the abstract submittal deadline. The maximum coverage per student is limited to $1000. Details and applications may be obtained via http://www.space- flight.org.

INFORMATION FOR AUTHORS
Because the submission deadline of April 5, 2011 has been fully extended for the convenience of contributors, there are no plans to defer this deadline due to the constraints of the confer- ence planning schedule. Due to the large number of expected submissions we encourage authors to submit abstracts early. Notification of acceptance will be sent via email by May 10, 2011. Detailed author instructions will be sent by email following acceptance. By submitting an abstract, the author affirms that the manuscriptʼs majority content has not been previously pre- sented or published elsewhere.

Authors may access the web-based abstract submittal system using the link available via the official website http://www.space-flight.org. During the online submission process, authors are expected to provide:
1. a paper title, as well as the name, affiliation, postal address, telephone number, and email address of the corresponding author and each co-author,
2. an extended abstract in the Portable Document File (PDF) format of at least 500 words that includes the title and authors, and provides a clear and concise statement of the problem to be addressed, the proposed method of solution, the results expected or obtained, and an ex- planation of its significance to astrodynamics and/or space-flight mechanics, with pertinent references and supporting tables and figures as necessary, and,
3. a condensed abstract (100 words) to be included in the conference program, which is directly typed into the text box provided on the web page and avoids the use of special symbols or characters, such as Greek letters.
Foreign contributors requiring an official letter of acceptance for a visa application should con- tact the Technical Chairmen by email at their earliest opportunity.
Technology Transfer Notice - Technology transfer guidelines substantially extend the time required to review abstracts and manuscripts by private enterprises and government agencies.
To preclude late submissions and withdrawals, it is the responsibility of the author(s) to deter- mine the extent of necessary approvals prior to submitting an abstract.
No-Paper/No-Podium Policy – A complete manuscript must be electronically uploaded to the web site prior to the conference in PDF format, be no more than twenty pages in length, and conform to the AAS manuscript format. If a complete manuscript is not received on time, then its presentation at the conference shall be forfeited; and if a presentation is not made by an author at the conference, then the manuscript shall be omitted from published proceedings.

Questions concerning the submission of manuscripts should be addressed to the technical chairs:

AAS Technical Chair
Dr. Hanspeter Schaub Aerospace Engineering Sciences Department ECNT 321, 431 UCB Colorado Center for Astrodynamics Research University of Colorado Boulder, CO 80309-0431 (303) 492-2767 (303) 492-2825 (Fax) hanspeter.schaub@colorado.edu

AIAA Technical Chair
Dr. Brian C. Gunter Physical and Space Geodesy (PSG) Delft Inst. of Earth Obs. & Space Systems (DEOS) Delft University of Technology Kluyverweg 1, 2629 HS Delft, The Netherlands +31-15-27-82565 +31-15-27-82348 (Fax) b.c.gunter@tudelft.nl

All other questions should be directed to the General Chairs:

AAS General Chair
Dr. Ryan P. Russell Guggenheim School of Aerospace Engineering Georgia Institute of Technology 270 Ferst Drive Atlanta, GA 30332-0150 (404) 385-3342 (404) 894-2760 (Fax) ryan.russell@gatech.edu
AIAA General Chair

Dr. William Todd Cerven The Aerospace Corporation 15049 Conference Center Drive Suite 600 Chantilly, VA 20151 (571) 307-4208 (571) 307-4317 (Fax) william.t.cerven@aero.org