Watching meteors on Triton

Details Watching meteors on Triton Watching meteors on Triton

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004icar..169..482d&link_type=abstract

Icarus, Volume 169, Issue 2, p. 482-491.

Computer Science

5

Meteoroids, Composition, Ionosphere

Scientific paper

The thin atmosphere of Neptune's moon Triton is dense enough to ablate micrometeoroids as they pass through. A combination of Triton's orbital velocity around Neptune and its orbital velocity around the Sun gives a maximum meteoroid impact velocity of approximately 19 kms-1, sufficient to heat the micrometeoroids to visibility as they enter. The ablation profiles of icy and stony micrometeoroids were calculated, along with the estimated brightness of the meteors. In contrast to the terrestrial case, visible meteors would extend very close to the surface of Triton. In addition, the variation in the meteoroid impact velocity as Triton orbits Neptune produces a large variation in the brightness of meteors with orbital phase, a unique Solar System phenomenon.

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