1. Preface

   EditorialNotes Pages: vii - viii

2. The activities of comets related to their aging and origin

   • Fred L. Whipple

   Invited Papers Pages: 1 - 11

3. A model of the galactic tidal interaction with the oort comet cloud

   • John J. Matese
   • Patrick G. Whitman

   Invited Papers Pages: 13 - 35

4. Origin of oort cloud comets in the interstellar space

   • Mauri J. Valtonen
   • Jia-Qing Zheng
   • Seppo Mikkola

   Invited Papers Pages: 37 - 48

5. Origin of short period comets

   • M. E. Bailey

   Invited Papers Pages: 49 - 61

6. Structure and evolution of the Jupiter family

   • H. Rickman

   Invited Papers Pages: 63 - 69

7. Collective resonant phenomena on small bodies in the solar system

   • Ch. Froeschlé
   • C. Froeschlé

   Invited Papers Pages: 71 - 89

8. Dynamics of periodic comets and meteor streams

   • V. V. Emel'yanenko

   Invited Papers Pages: 91 - 110

9. Evolution of short period meteoroid streams

   • P. B. Babadzhanov
   • Yu. V. Obrubov

   Invited Papers Pages: 111 - 127

10. Historical variation in the meteor flux as found in Chinese and Japanese chronicles

    • Ichiro Hasegawa

    Invited Papers Pages: 129 - 142

11. Episodes of terrestrial geologic activity during the past 260 million years: A quantitative approach

    • Michael R. Rampino
    • Ken Caldeira

    Invited Papers Pages: 143 - 159

12. Periodicity in the crater formation rate and implications for astronomical modeling

    • S. Yabushita

    Invited Papers Pages: 161 - 178

13. The fundamental role of giant comets in earth history

    • S. V. M. Clube

    Invited Papers Pages: 179 - 193

14. Progress in the elliptic restricted 3-body problem: Asteroids in the 2/1, 3/1 and 1/1 resonance

    • R. Dvorak

    Invited Papers Pages: 195 - 205

15. Asteroid families: Recent results and present scenario

    • V. Zappala
    • A. Cellino

    Invited Papers Pages: 207 - 227

16. The ultraviolet spectra of carbonaceous chondrites

    • T. Inagaki
    • S. Yabushita
    • K. Wada

    Short Contributions Pages: 229 - 231

17. Solar dust ring observation at the total solar eclipse in Mexico

    • Syuzo Isobe
    • Toshihiko Tanabe
    • Motokazu Noguchi

    Short Contributions Pages: 233 - 235

18. Short-period comets and apollo-amor-aten type asteroids in view of tisserand invariant

    • H. Kosai

    Short Contributions Pages: 237 - 240

19. The charging processes of dust particles and the effects of lorentz scattering in the circum-solar dust band

    • A. Satheesh Kumar
    • Syuzo Isobe

    Short Contributions Pages: 241 - 244

20. Shock metamorphism on the moon

    • Yasunori Miura
    • Toshio Kato

    Short Contributions Pages: 245 - 248

21. Evidence of earth catastrophe by anomalous shocked quartz at the K/T boundary

    • YASUNORI MIURA
    • Toshio KATO
    • Masashi Imai

    Short Contributions Pages: 249 - 253

22. Hill stability of the planar three-body problem: General and restricted cases

    • Takeshi Nakamura
    • Junzo Yoshida

    Short Contributions Pages: 255 - 260

23. Invisible comets on evolutionary track of short-period comets

    • Tsuko Nakamura
    • Makoto Yoshikawa

    Short Contributions Pages: 261 - 266

24. The evolution of groups of very light stars in the galaxy

    • Irina V. Petrovskaya

    Short Contributions Pages: 267 - 269

25. Near-parabolic cometary flux in the outer solar system

    • T. Tsujii

    Short Contributions Pages: 271 - 274

26. Organic models of interstellar grains

    • K. Wada
    • T. Inagaki
    • S. Yabushita

    Short Contributions Pages: 275 - 277

27. Numerical investigation on the orbital evolution of 1:2 resonant asteroids between Jupiter and Saturn

    • Noriaki Watanabe

    Short Contributions Pages: 279 - 286

28. Numerical investigation of motions of resonant asteroids in the three-dimensional space

    • Makoto Yoshikawa

    Short Contributions Pages: 287 - 290

29. Candidates for families in Apollo-Amor type asteroids

    • Manabu Yuasa

    Short Contributions Pages: 291 - 293