Grupa: Administrator 
Lokalizacja:: Kłodzko JO80IK06AO
Posty: 44508 #8324226
Od: 2013-10-18
| Orionids will ensure reasonable rates, although not as good as that detected some years ago. Recent returns (2006-2009) were characterized by strong meteor activity (ZHR up to 70 hr-1 on 2 or 3 consecutive dates), while data from 1984-2001 indicate the highest mean ZHR is ranging form 14 to 31 hr-1. A 12-year periodicity in stronger returns due to Jupiter's influence has been found in radar data since 2002, but not in visual data. Higher activity due to suspected cycle was forecasted in 2020-2022, but the average maximum ZHR in the years 2012-2020 was in the range of 20-30 hr-1. ZHR for 2025 is expected to be about 20 hr-1, peaking October 21.
Orionids often provide several lesser maxima, helping meteor activity remain roughly constant for several consecutive days centered on the main peak. Note that, in 1993 and 1998, a submaximum about as strong as the main peak was detected on Oct. 17-18 from Europe.
Orionids
Active: October 02 - November 07
Maximum: October 21 (λ,sol= 208 degs)
ZHR: Medium (20 hr-1)
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73! Stanisław SP6MLK
Kłodzko JO80IK06AO
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