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单词 Eta Aquariid meteors
释义
Eta Aquariid meteors

Astronomy
  • A prominent meteor shower, particularly for observers in the southern hemisphere, produced by debris from Halley’s Comet. Activity is seen between April 24 and May 20, with a broad maximum centred on May 5, when the radiant lies at RA 22h 32m, dec. −01°. Peak ZHR values may approach 50. Eta Aquariid meteors are very swift (geocentric velocity 66 km/s), and a high proportion leave persistent trains. Bright Eta Aquariids are quite common, and often appear yellow.


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