Distant lunar sodium tail observed in the Japanese local-time sector during the Leonid meteor shower of 1998

Details Distant lunar sodium tail observed in the Japanese local-time sector during the Leonid meteor shower of 1998 Distant lunar sodium tail observed in the Japanese local-time sector during the Leonid meteor shower of 1998

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jgr...10524621s&link_type=abstract

Journal of Geophysical Research, Volume 105, Issue E10, p. 24621-24626

Physics

3

Planetology: Solid Surface Planets: Atmospheres-Structure And Dynamics, Planetology: Solid Surface Planets: Impact Phenomena (Includes Cratering), Planetology: Solid Surface Planets: Remote Sensing

Scientific paper

The distant lunar sodium tail was discovered by Smith et al. [1999] from all-sky observations of sodium emissions made at the McDonald Observatory, Texas (31°N, 256°E), during the Leonid meteor shower of November 1998. The optical emission from the lunar sodium tail was enhanced after the meteor shower and appeared as a bright spot in the all-sky images. We conducted similar all-sky sodium observations during the same interval at Shigaraki (35°N, 136°E), Japan, and observed the sodium spot of the lunar tail on November 18-20. The changes in the spot shape during these days are quite similar to those reported by Smith et al. [1999], although the intensities are much weaker. The local time difference between Texas and Shigaraki (~10 hours) offers a unique opportunity to study the time history of the sodium emission enhancement after the Leonid meteor shower. Combining these two measurements, we conclude that the duration of the most enhanced sodium emission was <1 day, which is consistent with the duration of the meteor shower.

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