狼星团吧 关注:2贴子:111
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凤凰座流星雨

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Only one impressive Phoenicid return has been reported so far, that of its discovery in 1956, when the EZHR was probably ∼ 100, possibly with several peaks spread over a few hours. Three other potential, if uncertain, bursts of lower activity have been claimed . Reliable IMO data has shown recent activity to have been virtually nonexistent. This may be a periodic shower however, and more observations of it are needed by all methods. From the southern hemisphere (only), the Phoenicid radiant culminates at dusk, remaining well on view for most of the night. Last quarter Moon rises soon after midnight, leaving the first half of the night with dark skies for observers on December 6. As the predicted possible 2011 return was still to come when this was written, any activity then may help refine the shower's parameters given here. No predictions of activity are in-force for 2012. Phoenicids are extremely slow meteors.


1楼2012-12-02 18:35回复
    the three stronger southern hemisphere showers — α-Centaurids, η-Aquariids and δ-Aquariids


    5楼2012-12-03 00:05
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