<font color="#ff87ca">-출처 별미사-</font><br /> <br /> < Orionids > <br /> <br /> Active : October 2-November 7; <br /> Maximum : October 21, 21h UT (sol = 208°) <br /> <font color="#ff87ca">(한국 10월 22일 새벽 4시경)- 월령 양호- </font><br /> ZHR = 20 <br /> Radiant : alpha = 095°, delta = +16°; Radiant drift: see Table 6; <br /> V = 66 km/s (매우 빠른편이네요) <br /> r = 2.9 (밝은편이죠) <br /> TFC : alpha = 100°, delta = +39° and <br /> alpha = 075°, delta = +24° (beta > 40° N); <br /> or alpha = 080°, delta = +01° and <br /> alpha = 117°, delta = +01° (beta < 40° N). <br /> <br /> October's waning crescent Moon partly favors the Orionids near their best. They are noted for having several maxima other than the main one above, with activity sometimes remaining almost constant for several consecutive nights centered on this peak. In 1993 and 1998, a submaximum as strong as the normal peak was detected on October 17-18 from Europe, for instance. All observers should be aware of these possibilities, though covering October 17-18 in dark skies will not be possible in 2003. Several subradiants have been reported in the past, but recent video work suggests the radiant is far less complex; photographic, telescopic and video work to confirm this would be useful, as visual observers have clearly had problems with this shower's radiant determination before. With a radiant near the celestial equator, the shower can be seen from most of the globe, and observations are possible from midnight onwards in both hemispheres, perhaps a little before in the north. <br /> <br /> <br /> 철곤!! 영어공부 할겸 해석좀 해봐--;;;;ㅋㅋㅋ 무단전제 복제 금지--; 무슨소리냐..암튼...<br /> ZHR이 20이니깐..뭐...유성우에 관심있으신 분들은 www.imo.net<br />