Preprints

The proceedings for "Decoupling Civil Timekeeping from Earth Rotation" are being published by Univelt, Inc. as part of the American Astronautical Society (AAS) Science and Technology Series, available from: http://www.univelt.com/Science.html

The Call for Papers is available here. The meeting program is available for download (PDF). The presentations/slides given at the workshop are available on the Program page.

Colloquium Summary

• Preface
• John Seago, Rob Seaman, and Steve Allen, "The Colloquium on Decoupling Civil Timekeeping from Earth Rotation"
  Preprint-660

Session 1: Setting the Stage

• Rob Seaman, "System Engineering for Civil Timekeeping"
  Preprint-661 | Discuss-661
• John Seago, P. Kenneth Seidelmann, Steve Allen, "Legislative Specifications for Coordinating with Universal Time"
  Preprint-662 | Discuss-662

Session 2: The Past, Present, and Far Future

• Paul Gabor, "The Heavens and Timekeeping, Symbolism and Expediency"
  Preprint-663 | Discuss-663
  
• John Seago, "Leap Seconds in Literature"
  Preprint-664 | Discuss-664
• Danny Hillis, Rob Seaman, Steve Allen, and Jon Giorgini, "Time in the 10,000-Year Clock"
  Preprint-665 | Discuss-665

Round-table A

• Midday Round-table Discussion of October 5, 2011
  Roundtable-A

Session 3: Earth Orientation

• Dennis McCarthy, "Using UTC to Determine the Earth’s Rotation Angle"
  Preprint-666 | Discuss-666
• Wolfgang R. Dick, "The IERS, the Leap Second, and the Public"
  Preprint-667 | Discuss-667
• Daniel Gambis, Gérard Francou, and Teddy Carlucci, "Results from the 2011 IERS Earth Orientation Center Survey about a Possible UTC Redefinition"
  Preprint-668 | Survey_results-668 | Discuss-668

Session 4: Time Scale Applications

• Frank Reed, "Traditional Celestial Navigation and UTC"
  Preprint-669 | Discuss-669
• Denis Savoie, Daniel Gambis, "The Consequences of Decoupling UTC on Sundials"
  Preprint-670 | Discuss-670
• George H. Kaplan, "Time Scales in Astronomical and Navigational Almanacs"
  Preprint-671 | Discuss-671
• P. Kenneth Seidelmann, John Seago, "Issues Concerning the Future of UTC"
  Preprint-672 | Discuss-672
• Frank Reed, "GMT by Observation: The Historical Method of Lunars"
  

Session 5: Space Operations

• David Simpson, "UTC and the Hubble Space Telescope Flight Software"
  Preprint-673 | Discuss-673
• Mark Storz, "Computation Errors in Look Angle and Range Due to Redefinition of UTC"
  Preprint-674 | Discuss-674
• Stephen Malys, "Proposal for the Redefinition of UTC: Influence on NGA Earth Orientation Predictions and GPS Operations"
  Preprint-675 | Discuss-675

Session 6: Ground Operations

• Arnold Rots, "UTC at the Harvard-Smithsonian Center for Astophysics (CfA) and Environs"
  Preprint-676 | Discuss-676
• Rob Seaman, "An Inventory of UTC Dependencies for IRAF"
  Preprint-677 | Discuss-677
• Steve Allen, "Telescope Systems at Lick Observatory and Keck Observatory"
  Preprint-678 | Discuss-678

Round-table B

• Midday Round-table Discussion of October 6, 2011
  Roundtable-B

Session 7: Contingency Proposals

• David Terrett, "Automating Retrieval of Earth Orientation Predictions"
  Preprint-679 | Discuss-679
• Florent Deleflie, Daniel Gambis, Christophe Barache, Jérome Berthier, "Dissemination of DUT1 Through the Use of Virtual Observatory"
  Preprint-680 | Discuss-680
• Steve Allen, "Timekeeping System Implementations: Options for the Pontifex Maximus"
  Preprint-681 | Discuss-681

Round-table C

• Concluding Round-table Discussion
  Concluding_discussion

Special Session

• P. Kenneth Seidelmann, "The Longwood Gardens Analemmatic Sundial"
  Preprint-682