The 1996 Washington DC DDA Meeting Program


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Tuesday Schedule
Wednesday Schedule
Posters



Sunday, 14 April 1996, US Naval Observatory


      6:30pm  Registration and Reception - Building 1 Lobby

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Monday, 15 April 1996, US Naval Observatory
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      8:00am  Registration - Building 52 Lobby

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   Session 1 - Building 52 Room 300
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       9:00am  Welcome: Captain Kent W. Foster
                        Superintendent of the Observatory

       9:15am  Integrators for Long-Term Solar System Dynamical
               Simulations
                  Kevin R. Grazier (Student Stipend Award Winner) (UCLA,JPL),
                  William I. Newman, Ferenc Varadi, David J. Goldstein,
                  William M. Kaula, (UCLA)

       9:35am  Life on the Edge of Chaos: Symplectic Integration over
               Long Times
                  Michelle K. Haberkorn and William I. Newman (UCLA),
                  James M. Hyman (LANL)

       9:55am  Chaos in High-Order Mean Motion Resonances in the
               Outer Asteroid Belt
                  Matthew J. Holman, Norman W. Murray (C.I.T.A./U. Toronto)

      10:15am  On the Applicability of the Lyapunov Exponent Relation
                  M. A. Murison (USNO)

      10:35am  BREAK

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   Session 2 - Building 52 Room 300
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      11:00am  Force Model Enhancements to GTDS
                  B. Brown (CSC)

      11:20am  Using Older Observations to Improve Ephemerides
                  E. M. Standish (JPL/Caltech)

      11:40am  The Dynamical Astronomy Theorist Who Would Be Rich:
               Forest Ray Moulton
                  D. E. Osterbrock (UCO/Lick Obs)

      12:00 Noon  The Birth of Celestial Mechanics:
               A Science Nearly Stillborn
                  L. Doggett (USNO)

      12:30pm  LUNCH - StarGazers' Cafe, Building 59

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   Session 3 - Building 52 Room 300
             - Special Session in Binary Star Formation
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       2:00pm  Binary Star Formation by Fragmentation
                  A.P. Boss (DTM-CIW)

       2:45pm  Gravitational instabilities in Protostellar Disks
                  J. Tohline  (Louisiana State U)

       3:30pm  BREAK

       3:50pm  Young Binary Star/Disk Interactions
                  S. Lubow (STScI), P. Artymowicz (Stockholm Observatory)

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   Session 4 - Building 52 Room 300
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       4:35pm  Interactions in Regions of Massive Star Formation:
               G34.3+0.2 and Sagittarius B2
                  Ralph Gaume, Alan Fey (USNO)

       4:55pm  The Orbit and Individual Mass Determinations for the
               Low-Mass Binary L722-22
                  L. G. Taff (JHU), J. E. Hershey (CSC at STScI)

       5:15pm  Possible New Properties of Gravity
                  T. Van Flandern (Univ. Md. Phys., Meta Res)



Tuesday, 16 April 1996, US Naval Observatory

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      8:00am  Registration - Building 52 Lobby

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   Session 5 - Building 52 Room 300
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       8:30am  The Rotation Rates of Very Small Asteroids:
               Evidence for ''Rubble Pile'' Structure
                  A. W. Harris (Jet Propulsion Laboratory, Caltech)

       8:50am  The Mass of 15 Eunomia from Observations of
               1284 Latvia and 1313 Berna
                  J. L. Hilton (USNO)

       9:10am  Asteroid Astrometry with the UJ Catalog
                  A.K.B. Monet (US Naval Observatory Flagstaff Station)

       9:30am  The Lunar Physical Librations
                  X X Newhall, J. G. Williams (JPL)

       9:50am  Application of Bayesian Statistics to
               Lunar Data Analysis II
                  J. G. Ries, W. H. Jefferys (UT at Austin, Dept. of Astronomy)

      10:10am  From the Kuiper Belt to Jupiter-Family Comets:
               The Spatial Distribution of Ecliptic Comets
                  Harold F. Levison (SwRI), Martin J. Duncan (Queen's U.)

      10:30am  BREAK

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   Session 6 - Building 52 Room 300
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      10:50am  Astrometry and Orbits of the Inner Uranian Satellites
                  D.Pascu, J.R.Rohde, P.K.Seidelmann (USNO), E.Wells,
                  C.Kowal (CSC/STScI), B.Zellner (Geo.Sou.U),
                  A.Storrs (StScI), D.G.Currie, D.M.Dowling (UMd)

      11:10am  HST WFPC2 Observations of Small Saturnian Satellites
               During the 1995 Ring-Plane Crossings
                  L. Dones (San Jose State University Foundation),
                  P.D. Nicholson, C.A. McGhee (Cornell), J.J. Lissauer
                  (SUNY Stony Brook), M.R. Showalter (Stanford), R.G. French
                  (Wellesley), S.M. Larson (Arizona), P.Seitzer (Michigan),
                  B.Sicardy (Observatoire de Paris), G.E. Danielson (Caltech)

      11:30am  Orbits of the Saturnian Satellites from Earthbased and
               Voyager Observations
                  R.A. Jacobson (JPL/Caltech)

      11:50am  Two High-Quality Types of Earth-Based Astrometric Data
                  J.H. Lieske (Caltech/JPL)

      12:10pm  Orbital Stability of Hypothetical Distant
               Satellites of the Jovian Planets
                  Jose Luis Alvarellos,Jr. (Student Stipend Award Winner),
                  Luke Dones (San Jose State University Foundation)

      12:30pm  LUNCH

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   Session 7 - Building 52 Room 300
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       1:30pm  PHOTO OPPORTUNITY, WEATHER PERMITTING.
               On the hillside between the big dome and Building 1.

       2:00pm  Post-Impact Improvements in the Orbit Solutions of the
               SL9 Fragments
                  P. W. Chodas (JPL/Caltech)

       2:20pm  Ancient Chinese Observations and Modern Cometary Models
                  D. K. Yeomans (JPL/Caltech)


       2:40pm  BREAK

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   Session 8 - Building 52 Room 300
             - Brouwer Lecture
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       3:00pm  A Million Observations, Thirty-Thousand Orbits
                  Brian Marsden (SAO)

       4:00pm  DDA Business Meeting

   BANQUET:  Old Europe Restaurant - 2434 Wisconsin Ave. NW

       6:30pm  Cash Bar

       7:30pm  DINNER
                  Unpublished Stories of the Space Program
                     Gerald Hawkins



Wednesday, 17 April 1996, US Naval Observatory

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      8:00am  Registration - Building 52 Lobby

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   Session 9 - Building 52 Room 300
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       8:30am  The Astrographic Catalog Project
                  Sean E. Urban (US Naval Observatory)

       8:50am  Astrograph Astrometry
                  N. Zacharias (USRA / USNO)

       9:10am  Expected Astrometric Capabilities of a Hubble Space
               Telescope Fine Guidance Sensor with Near-Theoretical
               S-Curve Characteristics
                  O. G. Franz, L. H. Wasserman (Lowell Obs),
                  G. F. Benedict (McDonald Obs., U. Texas)

       9:30am  Linking Hipparcos to the VLBI Reference System using the
               HST Fine Guidance Sensors:
               Results for the Hipparcos Project
                  Paul D. Hemenway (U Texas), E.P.Bozyan (U RhodeIsland),
                  R.L. Duncombe (U Texas), O.Franz (Lowell Obs.), A.M.Lalich
                  (U Texas), B.McArthur (U Texas), E.Nelan (U Texas), D.Taylor
                  (STScI), J.Kovalevsky (C.E.R.G.A.), M.A.C.Perryman (E.S.A.),
                  C.Turon, (Obs.Meudon), R.Preston (J.P.L.), K.Johnston
                  (U.S.N.O.), J.Kristian (Carnegie Obs.), M.Lattanzi
                  (Oss.Ast.Torino), G.F.Benedict (U Texas), W.H.Jefferys
                  (U Texas), P.J.Shelus (U Texas), L.W.Fredrick (U Virginia),
                  W.van Altena (Yale)

       9:50am  An HST Astrometric Study of the Binary System L726-8
                  P. J. Shelus (McDonald Obs.), O.G. Franz, L.H. Wasserman
                  (Lowell Obs.)

      10:10am  Observation of the Gravitational Deflection of
               Light by Jupiter
                  A. L. Whipple, W. H. Jefferys, G. F. Benedict, P. D. Hemenway,
                  B. McArthur, J. McCartney, E. Nelan, P. J. Shelus, D. Story,
                  R. Duncombe (University of Texas at Austin), W. F. van Altena
                  (Yale University), O. G. Franz, L. H. Wasserman
                  (Lowell Observatory), L. W. Fredrick (University of Virginia)

      10:30am  BREAK

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   Session 10 - Building 52 Room 300
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      10:50am  HST Observations of the Nucleus of NGC 7479 ---
               What Happens to Bar-Driven Gas Inflow?
                  G. F. Benedict, I. Joergensen, D. Cornell, A. L. Whipple,
                  D. Chappell (McDonald Obs., U. Texas), Beverly J. Smith
                  (IPAC, CalTech), J. D. P. Kenney (Yale University)

      11:10am  Galactic Structure from PMM Catalogs
                  David G. Monet (U.S. Naval Observatory Flagstaff Station)


      11:30am  Observational Consequences of Galactic Oscillations
                  R.H.Miller (U.Chicago), B.F.Smith (NASA/Ames Research Center)

      11:50am  Spiral Arms in Galaxies with Two-Way (Counter-Rotating)
               Disks
                  S. Howard (USRA), M.T. Carini (U Western Kentucky),
                  G.G. Byrd (U Alabama), S. Lester (Louisiana State U)

      12:10pm  Width of an Inner Lindblad Resonance in the Milky Way,
               Origin of a Hole in its Gas Disk
                  L. Marochnik (CSC), R. Sagdeev, D. Usikov (U. Maryland)


      12:30pm  LUNCH

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   Session 11 - Building 52 Room 300
              - Special Session on Astrometry
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       2:00pm  Introduction to Optical/IR Interferometry
                  Ken Johnston (USNO)

       2:30pm  Astrometry with the Mark III and NPOI
                  Don Hutter (USNO)

       3:00pm  CHARA
                  Hal McAllister (Georgia State U)

       3:30pm  Measurements of the visual orbits of spectroscopic binaries
               with long baseline optical interferometry
                  Christian A. Hummel (USRA/USNO)

       4:00pm  Space Interferometry
                  Andy Boden (JPL)

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Posters


HST-FGS Observation Confirms the Binarity of the
Chiron Occultation Star Ch0=2
   O. G. Franz, L. H. Wasserman, M. W. Buie, A. S. Bosh (Lowell Obs),
   S. J. Bus, J. L. Elliot (MIT)

Frame Adjustments to Absolute Transit Circle Catalogs
   Ellis Holdenried and Ted Rafferty (US Naval Observatory)

Time Scales for Energy Burst of Asteroid-Sized Objects
Falling on the Neutron Stars
   L. Marochnik (CSC), R. Sagdeev, D. Usikov (U Maryland), I. Mitrofanov
   (Space Research Institute, Moscow, Russia),

The Impact of Technology on the Lunar Laser Ranging Network
   P. J. Shelus (McDonald Obs.), C. Veillet (Obs. Cote d'Azur)

The Response of Disks to Oscillatory Modes in Galaxies
   B. F.Smith, R.A.Gerber, T.Y.Steiman-Cameron (NASA/Ames Research Center),
   R.H.Miller (U.Chicago)

Using an Astrolabe for Hands on Science at any level of
Astronomical Instruction
   H. Williams (Montgomery College)

CCD Observations for the Radio-Optical Reference Frames Link
   N.Zacharias (USRA / USNO)


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