Alpha Capricornids

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Alpha Capricornids is a meteor shower that takes place as early as 15 July and continues until around 10 August.[1] The meteor shower was discovered by Hungarian astronomer Miklos von Konkoly-Thege in 1871.This shower has infrequent but relatively bright meteors, with some fireballs. Parent body is comet 169P/NEAT.

Peter Jenniskens and Jeremie Vaubaillon identified the parent body as asteroid 2002 EX12, which in the return of 2005 was found weakly active near perihelion.[2] This object is now called comet 169P/NEAT.

According to Jenniskens and Vaubaillon, the meteor shower was created about 3,500 to 5,000 years ago, when about half of the parent body disintegrated and fell into dust.[2] The dust cloud evolved into Earth's path recently, causing a shower with peak rates of 2-5/h, sometimes having outbursts of bright flaring meteors with rates up to 5-9/h. The bulk of the dust will not be in Earth's path until the 24th century. Around 2370 AD, this shower might create an annual meteor storm.

Notes[edit]

  1. ^ [dead link]"Alpha Capricornids: Encyclopedia Article". Encarta.msn.com. Archived from the original on 2009-10-31. Retrieved 2009-02-10. 
  2. ^ a b "Minor planet 2002 EX12 ( = 169P/NEAT) and the Alpha Capricornid shower". Astronomical Journal. Retrieved 2010-03-31.