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Micrometeoroid Impact Data


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1974-12-19 to 1980-01-02


This data set was written by a DEC-10 in binary code, in a single file. The file has 438 physical records. Of these, 203 records provide the time intervals when the experiment was active. The remaining 235 records (of 47 words each) describe the 235 micrometeoroid impact events that were registered. Each such record provides the impact time, the sensor number (0 for the ecliptic plane sensor, and 1 for the south sensor), velocity of impact, mass, density, mass-spectrum, and a number of derived orbital characteristics of the micrometeoroid.

Please note that there also exists an ASCII version (74-079A-12B) of this data set, generated by NSSDC.


  • Planetary Science: Small Bodies
  • Space Physics: Zodiacal Light/Interplanet Dust


  • 74-097A-12A

Additional Information



Questions or comments about this data collection can be directed to: Dr. H. Kent Hills.



NameRoleOriginal AffiliationE-mail
Dr. W. I. RimplerData ProviderMax-Planck-Institut fur Astronomie 

Selected References

Schmidt, K. D., and E. Gruen, Distribution of orbital elements of interplanetary dust in the inner solar system as detected by the Helios spaceprobe, Space Res., 19, 439-442, 1979. (Proc. of the Open Meet. of the Working Groups on Phys. Sci., Innsbruck, Austria, May 29-June 10, 1978).

Schmidt, K. D., and E. Gruen, Orbital elements of micrometeoroids detected by the Helios 1 space probe in the inner solar system, In -- Solid Particles in the Solar System, 321-324, I. Halliday, 1980.

Pailer, N., and E. Gruen, Penetration limit of thin films, Planet. Space Sci., 28, No. 3, 321-331, 1980.

Gruen, E., et al., Orbital and physical characteristics of micrometeoroids in the inner solar system as observed by Helios 1, Planet. Space Sci., 28, No. 3, 333-349, 1980.

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