２００４年５月観測報告

<BODY marginwidth="20" marginheight="20" topmargin="20" leftmargin="20"> <DIV class="standard_width"> <H1>■２００４年５月観測報告</H1> <P>待ちに待った２大彗星にお目にかかれる５月。夜間は短く、さらに彗星騒動で肝心の流星観測時間が削られそうな今日この頃。これで梅雨の走りの悪天候があったらもうお手上げだが、さてどうなることか・・・</P> <HR size="1"> <H3>■観測結果</H3> <TABLE border="0" width="480" cellspacing="0" cellpadding="1" align="center"> <TR valign="top"> <TD width="80"><STRONG>観測地：</STRONG></TD> <TD width="400">静岡県御殿場市古沢<BR> 東経138°56′36″　北緯35°20′00″</TD> </TR> <TR valign="top"> <TD width="80"><STRONG>観測者：</STRONG></TD> <TD width="400">東の観測装置</TD> </TR> <TR valign="top"> <TD width="80"><STRONG>観測方法：</STRONG></TD> <TD width="400">眼視プロット観測（プ），眼視計数観測（計）</TD> </TR> </TABLE> <TABLE border="0" width="480" cellspacing="0" cellpadding="1" align="center"> <TR valign="bottom"> <TH class="tone4"><SPAN class="white">日付</SPAN></TH> <TH class="tone4"><SPAN class="white">開始</SPAN></TH> <TH class="tone4"><SPAN class="white">終了</SPAN></TH> <TH class="tone4"><SPAN class="white">分</SPAN></TH> <TH class="tone4"><SPAN class="white">全<BR>流<BR>星</SPAN></TH> <TH class="tone4"><SPAN class="white">散<BR>在</SPAN></TH> <TH class="tone4"><SPAN class="white">お<BR>と<BR>め</SPAN></TH> <TH class="tone4"><SPAN class="white">α<BR>か<BR>ん<BR>む<BR>り</SPAN></TH> <TH class="tone4"><SPAN class="white">４<BR>月<BR>α<BR>う<BR>し<BR>か<BR>い</SPAN></TH> <TH class="tone4"><SPAN class="white">η<BR>み<BR>ず<BR>が<BR>め</SPAN></TH> <TH class="tone4"><SPAN class="white">α<BR>こ<BR>と</SPAN></TH> <TH class="tone4"><SPAN class="white">５<BR>月<BR>α<BR>う<BR>し<BR>か<BR>い</SPAN></TH> <TH class="tone4"><SPAN class="white">ξ<BR>か<BR>ん<BR>む<BR>り</SPAN></TH> <TH class="tone4"><SPAN class="white">χ<BR>さ<BR>そ<BR>り</SPAN></TH> <TH class="tone4"><SPAN class="white">最<BR>微</SPAN></TH> <TH class="tone4"><SPAN class="white">雲<BR>量</SPAN></TH> <TH class="tone4"><SPAN class="white">方<BR>向</SPAN></TH> <TH class="tone4"><SPAN class="white">方<BR>法</SPAN></TH> </TR> <TR> <TD colspan="18" class="tone2"><STRONG>　2004年5月</STRONG></TD> </TR> <TR> <TH class="tone0"><SPAN class="color">1/2</SPAN></TH> <TH class="tone0"><SPAN class="color">20:45</SPAN></TH> <TH class="tone0"><SPAN class="color">21:45</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">7</SPAN></TH> <TH class="tone0"><SPAN class="black">6</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="red">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">4.7</SPAN></TH> <TH class="tone0"><SPAN class="color">2</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> <TH class="tone0"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">3/4</SPAN></TH> <TH class="tone1"><SPAN class="color">21:00</SPAN></TH> <TH class="tone1"><SPAN class="color">22:00</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">12</SPAN></TH> <TH class="tone1"><SPAN class="black">12</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="red">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="color">5.2</SPAN></TH> <TH class="tone1"><SPAN class="color">2</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> <TH class="tone1"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">6/7</SPAN></TH> <TH class="tone0"><SPAN class="color">2:00</SPAN></TH> <TH class="tone0"><SPAN class="color">3:00</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">36</SPAN></TH> <TH class="tone0"><SPAN class="black">22</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="red">13</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">5.0</SPAN></TH> <TH class="tone0"><SPAN class="color">2</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> <TH class="tone0"><SPAN class="color">計</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">7/8</SPAN></TH> <TH class="tone1"><SPAN class="color">2:00</SPAN></TH> <TH class="tone1"><SPAN class="color">3:00</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">20</SPAN></TH> <TH class="tone1"><SPAN class="black">13</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="red">7</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="color">4.3</SPAN></TH> <TH class="tone1"><SPAN class="color">2</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> <TH class="tone1"><SPAN class="color">計</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">11/12</SPAN></TH> <TH class="tone0"><SPAN class="color">1:30</SPAN></TH> <TH class="tone0"><SPAN class="color">2:30</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">53</SPAN></TH> <TH class="tone0"><SPAN class="black">35</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="red">8</SPAN></TH> <TH class="tone0"><SPAN class="black">6</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">5.8</SPAN></TH> <TH class="tone0"><SPAN class="color">0</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> <TH class="tone0"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">14/15</SPAN></TH> <TH class="tone1"><SPAN class="color">1:45</SPAN></TH> <TH class="tone1"><SPAN class="color">2:45</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">51</SPAN></TH> <TH class="tone1"><SPAN class="black">42</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="red">3</SPAN></TH> <TH class="tone1"><SPAN class="black">2</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="color">6.0</SPAN></TH> <TH class="tone1"><SPAN class="color">0</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> <TH class="tone1"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">17/18</SPAN></TH> <TH class="tone0"><SPAN class="color">1:45</SPAN></TH> <TH class="tone0"><SPAN class="color">2:45</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">53</SPAN></TH> <TH class="tone0"><SPAN class="black">41</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="red">2</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">6.0</SPAN></TH> <TH class="tone0"><SPAN class="color">1</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> <TH class="tone0"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">24/25</SPAN></TH> <TH class="tone1"><SPAN class="color">2:00</SPAN></TH> <TH class="tone1"><SPAN class="color">3:00</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">40</SPAN></TH> <TH class="tone1"><SPAN class="black">33</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="red">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">2</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="color">5.7</SPAN></TH> <TH class="tone1"><SPAN class="color">1</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> <TH class="tone1"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">25/26</SPAN></TH> <TH class="tone0"><SPAN class="color">2:15</SPAN></TH> <TH class="tone0"><SPAN class="color">3:15</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">56</SPAN></TH> <TH class="tone0"><SPAN class="black">44</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="red">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">2</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="color">6.0</SPAN></TH> <TH class="tone0"><SPAN class="color">0</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> <TH class="tone0"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">26/27</SPAN></TH> <TH class="tone1"><SPAN class="color">20:45</SPAN></TH> <TH class="tone1"><SPAN class="color">21:45</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">12</SPAN></TH> <TH class="tone1"><SPAN class="black">9</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="red">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">2</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="color">5.0</SPAN></TH> <TH class="tone1"><SPAN class="color">1</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> <TH class="tone1"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">27/28</SPAN></TH> <TH class="tone0"><SPAN class="color">1:10</SPAN></TH> <TH class="tone0"><SPAN class="color">2:10</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">48</SPAN></TH> <TH class="tone0"><SPAN class="black">37</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="red">-</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="black">2</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="color">5.8</SPAN></TH> <TH class="tone0"><SPAN class="color">1</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> <TH class="tone0"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">28/29</SPAN></TH> <TH class="tone1"><SPAN class="color">21:45</SPAN></TH> <TH class="tone1"><SPAN class="color">22:45</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">16</SPAN></TH> <TH class="tone1"><SPAN class="black">14</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="red">-</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="color">5.3</SPAN></TH> <TH class="tone1"><SPAN class="color">2</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> <TH class="tone1"><SPAN class="color">プ</SPAN></TH> </TR> <TR> <TH class="tone2"><SPAN class="color">合計</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">720</SPAN></TH> <TH class="tone2"><SPAN class="black">404</SPAN></TH> <TH class="tone2"><SPAN class="black">308</SPAN></TH> <TH class="tone2"><SPAN class="black">0</SPAN></TH> <TH class="tone2"><SPAN class="black">0</SPAN></TH> <TH class="tone2"><SPAN class="black">1</SPAN></TH> <TH class="tone2"><SPAN class="red">33</SPAN></TH> <TH class="tone2"><SPAN class="black">9</SPAN></TH> <TH class="tone2"><SPAN class="black">10</SPAN></TH> <TH class="tone2"><SPAN class="black">3</SPAN></TH> <TH class="tone2"><SPAN class="black">2</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> </TR> </TABLE> <BR> <TABLE border="0" width="400" cellspacing="0" cellpadding="0" align="center"> <TR> <TD><IMG alt="観測結果" src="hr.gif" width="400" height="300"></TD> </TR> </TABLE> <TABLE border="0" width="400" cellspacing="1" cellpadding="0" align="center"> <TR> <TD class="color">ηみずがめ座流星群の<STRONG>HR</STRONG>(1時間あたりの流星数)をプロットしたもの。</TD> </TR> </TABLE> <H4>■輻射点情報</H4> <TABLE border="0" width="480" cellspacing="0" cellpadding="1" align="center"> <TR> <TH class="tone4"><SPAN class="white">No.</SPAN></TH> <TH colspan="3" class="tone4"><SPAN class="white">日時（世界時）</SPAN></TH> <TH class="tone4"><SPAN class="white">名称</SPAN></TH> <TH class="tone4"><SPAN class="white">赤経</SPAN></TH> <TH class="tone4"><SPAN class="white">赤緯</SPAN></TH> <TH class="tone4"><SPAN class="white">個数</SPAN></TH> <TH class="tone4"><SPAN class="white">直径</SPAN></TH> <TH class="tone4"><SPAN class="white">Wt</SPAN></TH> <TH class="tone4"><SPAN class="white">速度</SPAN></TH> <TH class="tone4"><SPAN class="white">等級</SPAN></TH> <TH class="tone4"><SPAN class="white">HR</SPAN></TH> <TH class="tone4"><SPAN class="white">備考</TH> </TR> <TR> <TH class="tone0"><SPAN class="color">1</SPAN></TH> <TH class="tone0"><SPAN class="color">2004</SPAN></TH> <TH class="tone0"><SPAN class="color">5</SPAN></TH> <TH class="tone0"><SPAN class="color">11.71</SPAN></TH> <TH class="tone0"><SPAN class="color">αLyr</SPAN></TH> <TH class="tone0"><SPAN class="color">278</SPAN></TH> <TH class="tone0"><SPAN class="color">+39</SPAN></TH> <TH class="tone0"><SPAN class="color">6</SPAN></TH> <TH class="tone0"><SPAN class="color">3</SPAN></TH> <TH class="tone0"><SPAN class="color">1</SPAN></TH> <TH class="tone0"><SPAN class="color">rR-R</SPAN></TH> <TH class="tone0"><SPAN class="color">4.7</SPAN></TH> <TH class="tone0"><SPAN class="color">6.0</SPAN></TH> <TH class="tone0"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">2</SPAN></TH> <TH class="tone1"><SPAN class="color">2004</SPAN></TH> <TH class="tone1"><SPAN class="color">5</SPAN></TH> <TH class="tone1"><SPAN class="color">11.71</SPAN></TH> <TH class="tone1"><SPAN class="color">βCyg</SPAN></TH> <TH class="tone1"><SPAN class="color">290</SPAN></TH> <TH class="tone1"><SPAN class="color">+28</SPAN></TH> <TH class="tone1"><SPAN class="color">4</SPAN></TH> <TH class="tone1"><SPAN class="color">2</SPAN></TH> <TH class="tone1"><SPAN class="color">1</SPAN></TH> <TH class="tone1"><SPAN class="color">rR-R</SPAN></TH> <TH class="tone1"><SPAN class="color">4.3</SPAN></TH> <TH class="tone1"><SPAN class="color">4.0</SPAN></TH> <TH class="tone1"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">3</SPAN></TH> <TH class="tone0"><SPAN class="color">2004</SPAN></TH> <TH class="tone0"><SPAN class="color">5</SPAN></TH> <TH class="tone0"><SPAN class="color">14.72</SPAN></TH> <TH class="tone0"><SPAN class="color">βLyr</SPAN></TH> <TH class="tone0"><SPAN class="color">279</SPAN></TH> <TH class="tone0"><SPAN class="color">+32</SPAN></TH> <TH class="tone0"><SPAN class="color">4</SPAN></TH> <TH class="tone0"><SPAN class="color">2</SPAN></TH> <TH class="tone0"><SPAN class="color">1</SPAN></TH> <TH class="tone0"><SPAN class="color">rR-R</SPAN></TH> <TH class="tone0"><SPAN class="color">4.3</SPAN></TH> <TH class="tone0"><SPAN class="color">4.0</SPAN></TH> <TH class="tone0"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">4</SPAN></TH> <TH class="tone1"><SPAN class="color">2004</SPAN></TH> <TH class="tone1"><SPAN class="color">5</SPAN></TH> <TH class="tone1"><SPAN class="color">17.72</SPAN></TH> <TH class="tone1"><SPAN class="color">54Dra</SPAN></TH> <TH class="tone1"><SPAN class="color">293</SPAN></TH> <TH class="tone1"><SPAN class="color">+57</SPAN></TH> <TH class="tone1"><SPAN class="color">5</SPAN></TH> <TH class="tone1"><SPAN class="color">2</SPAN></TH> <TH class="tone1"><SPAN class="color">1</SPAN></TH> <TH class="tone1"><SPAN class="color">rR-R</SPAN></TH> <TH class="tone1"><SPAN class="color">4.8</SPAN></TH> <TH class="tone1"><SPAN class="color">5.0</SPAN></TH> <TH class="tone1"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">5</SPAN></TH> <TH class="tone0"><SPAN class="color">2004</SPAN></TH> <TH class="tone0"><SPAN class="color">5</SPAN></TH> <TH class="tone0"><SPAN class="color">17.72</SPAN></TH> <TH class="tone0"><SPAN class="color">21Vul</SPAN></TH> <TH class="tone0"><SPAN class="color">304</SPAN></TH> <TH class="tone0"><SPAN class="color">+30</SPAN></TH> <TH class="tone0"><SPAN class="color">4</SPAN></TH> <TH class="tone0"><SPAN class="color">2</SPAN></TH> <TH class="tone0"><SPAN class="color">1</SPAN></TH> <TH class="tone0"><SPAN class="color">rR-R</SPAN></TH> <TH class="tone0"><SPAN class="color">4.3</SPAN></TH> <TH class="tone0"><SPAN class="color">4.0</SPAN></TH> <TH class="tone0"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">6</SPAN></TH> <TH class="tone1"><SPAN class="color">2004</SPAN></TH> <TH class="tone1"><SPAN class="color">5</SPAN></TH> <TH class="tone1"><SPAN class="color">24.73</SPAN></TH> <TH class="tone1"><SPAN class="color">15Cyg</SPAN></TH> <TH class="tone1"><SPAN class="color">295</SPAN></TH> <TH class="tone1"><SPAN class="color">+36</SPAN></TH> <TH class="tone1"><SPAN class="color">4</SPAN></TH> <TH class="tone1"><SPAN class="color">2</SPAN></TH> <TH class="tone1"><SPAN class="color">1</SPAN></TH> <TH class="tone1"><SPAN class="color">rR-R</SPAN></TH> <TH class="tone1"><SPAN class="color">4.3</SPAN></TH> <TH class="tone1"><SPAN class="color">4.0</SPAN></TH> <TH class="tone1"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">7</SPAN></TH> <TH class="tone0"><SPAN class="color">2004</SPAN></TH> <TH class="tone0"><SPAN class="color">5</SPAN></TH> <TH class="tone0"><SPAN class="color">25.74</SPAN></TH> <TH class="tone0"><SPAN class="color">Lyr</SPAN></TH> <TH class="tone0"><SPAN class="color">277</SPAN></TH> <TH class="tone0"><SPAN class="color">+45</SPAN></TH> <TH class="tone0"><SPAN class="color">5</SPAN></TH> <TH class="tone0"><SPAN class="color">2</SPAN></TH> <TH class="tone0"><SPAN class="color">2</SPAN></TH> <TH class="tone0"><SPAN class="color">rR-R</SPAN></TH> <TH class="tone0"><SPAN class="color">4.6</SPAN></TH> <TH class="tone0"><SPAN class="color">5.0</SPAN></TH> <TH class="tone0"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">8</SPAN></TH> <TH class="tone1"><SPAN class="color">2004</SPAN></TH> <TH class="tone1"><SPAN class="color">5</SPAN></TH> <TH class="tone1"><SPAN class="color">25.74</SPAN></TH> <TH class="tone1"><SPAN class="color">19Lyr</SPAN></TH> <TH class="tone1"><SPAN class="color">288</SPAN></TH> <TH class="tone1"><SPAN class="color">+31</SPAN></TH> <TH class="tone1"><SPAN class="color">4</SPAN></TH> <TH class="tone1"><SPAN class="color">1</SPAN></TH> <TH class="tone1"><SPAN class="color">1</SPAN></TH> <TH class="tone1"><SPAN class="color">rR-R</SPAN></TH> <TH class="tone1"><SPAN class="color">4.5</SPAN></TH> <TH class="tone1"><SPAN class="color">4.0</SPAN></TH> <TH class="tone1"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">9</SPAN></TH> <TH class="tone0"><SPAN class="color">2004</SPAN></TH> <TH class="tone0"><SPAN class="color">5</SPAN></TH> <TH class="tone0"><SPAN class="color">27.69</SPAN></TH> <TH class="tone0"><SPAN class="color">73Her</SPAN></TH> <TH class="tone0"><SPAN class="color">261</SPAN></TH> <TH class="tone0"><SPAN class="color">+23</SPAN></TH> <TH class="tone0"><SPAN class="color">4</SPAN></TH> <TH class="tone0"><SPAN class="color">2</SPAN></TH> <TH class="tone0"><SPAN class="color">1</SPAN></TH> <TH class="tone0"><SPAN class="color">R</SPAN></TH> <TH class="tone0"><SPAN class="color">4.0</SPAN></TH> <TH class="tone0"><SPAN class="color">4.0</SPAN></TH> <TH class="tone0"><SPAN class="color">　</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">10</SPAN></TH> <TH class="tone1"><SPAN class="color">2004</SPAN></TH> <TH class="tone1"><SPAN class="color">5</SPAN></TH> <TH class="tone1"><SPAN class="color">27.69</SPAN></TH> <TH class="tone1"><SPAN class="color">4Cyg</SPAN></TH> <TH class="tone1"><SPAN class="color">291</SPAN></TH> <TH class="tone1"><SPAN class="color">+35</SPAN></TH> <TH class="tone1"><SPAN class="color">4</SPAN></TH> <TH class="tone1"><SPAN class="color">2</SPAN></TH> <TH class="tone1"><SPAN class="color">1</SPAN></TH> <TH class="tone1"><SPAN class="color">R</SPAN></TH> <TH class="tone1"><SPAN class="color">4.5</SPAN></TH> <TH class="tone1"><SPAN class="color">4.0</SPAN></TH> <TH class="tone1"><SPAN class="color">　</SPAN></TH> </TR> </TABLE> <BR> <TABLE border="0" width="480" cellspacing="0" cellpadding="0" align="center"> <TR> <TD><IMG alt="輻射点情報" src="rp.gif" width="480" height="186"></TD> </TR> </TABLE> <TABLE border="0" width="480" cellspacing="1" cellpadding="0" align="center"> <TR> <TD class="color">検出された輻射点を星図にプロットしたもの。図の座標系は黄道座標。太陽の位置は、2004年5月16日12時00分(世界時)。星図は、アストロアーツのステラナビゲータで作成。</TD> </TR> </TABLE>  <HR size="1"> <H3>■観測日記</H3> <H5>●5月1/2日</H5> <UL> 昨日以上にドロドロの空。普通なら観測する気がおきないが、この連休中は今後晴れそうにないので観測を強行。無理をした甲斐なく、特にこれといった異常は見られなかった。 </UL> <H5>●5月3/4日</H5> <UL> 午前中は細かい雨が降り続いていたが、午後になって急速に天候が回復。強い南風が吹き荒れ、透明度は良いものの流れる雲が多く条件はあまりよくない。観測中、ヘルクレス座北部（α＝２４０・δ＝＋５０）付近で群活動を感じた。 </UL> <H5>●5月5/6日　みずがめ群観測未遂報告</H5> <UL> ４日以降雲が取れません。月食も雨雲に遮られて月明かりすら拝めませんでした。さすがに昨夜はシビれをきらして午前１時半に富士山御殿場口へ移動。しかし夏の大三角が辛うじてわかるほどに腐った空で、結局観測は断念しました。今夜も今のところ曇り。夜半過ぎから晴れの予報だがどうなるか・・・ </UL> <UL> ちなみにブラッドフィールドは先月２９日早朝に確認しました。５ｃｍ双眼鏡の視野をはみ出す尾が印象的でした。 </UL> <H5>●5月6/7日</H5> <UL> 薄雲＆月明かりで最悪の条件ながら、何とか晴れた。みずがめ群は０等の長経路流星もあり、条件の割には活発な印象。 </UL> <H5>●5月7/8日</H5> <UL> 月がオレンジ色に見える最悪条件。みずがめ群がなければ多分観測しないほどの空だが、貴重な観測となりそうなため観測を強行。みずがめ群は昨日と同様に条件の割には明るいものもそこそこ見られ活発な印象を受ける。 </UL> <H5>●5月11/12日</H5> <UL> 極大から数日は経過しているはずのみずがめ群はまだ活発な活動（！）。こと座α群も思いのほか盛況だったが、てんびん～さそりの黄道群系は観測時間内には姿を現さなかった（０１時４５分前後に南天ぎりぎりのおおかみ座付近で閃光が走るがひょっとしたら火球？？）。 </UL> <UL> <STRONG>☆ニート彗星観望記</STRONG><BR> 天気予報を見ると昨晩しか晴れそうになかったため、冬の定番である東富士演習場内に潜入してニート彗星を確認してきました。プロキオンの東に肉眼でもわかる怪しい光のシミがあり、１２．５ｃｍ双眼鏡で尾も確認できました。光度は３等級前半でしょうか。いずれにしろ「大彗星」には程遠い・・・　尾の長く伸びたブラッドフィールド彗星のほうが見事でしたね。 </UL> <H5>●5月14/15日</H5> <UL> みずがめ群はまだしぶとく出現を見せている。時折姿を見せること座α群とは別にβ付近でも群活動があった。 </UL> <UL> 昨晩２０時２８分ごろ、近畿・中国地方で大火球が目撃されているようですね。プレセベとニート（１１日よりも淡くなったような・・・）との接近を楽しんでましたが、こちらには気がつきませんでした（ここでは無理か）。 </UL> <H5>●5月17/18日</H5> <UL> 活動域がうお座西部に移っているみずがめ群は２個の出現。西に大きく傾いたうしかい座α付近からは低速流星が１つ見られた。はくちょう座周辺のあちこちで群活動を感じるが輻射点としてまとまったのは２箇所のみだった。 </UL> <H5>●5月24/25日</H5> <UL> 悪天候続きで気がつけば１週間ぶりの観測。みずがめ群は完全に終息したようで全く姿を現さなかった。この時期注目の西に大きく傾いたうしかい座付近は、５月うしかい群らしい流星が散発的に出現するのみだった。 </UL> <H5>●5月25/26日</H5> <UL> ベガを挟んでこと座の北部・南東部で輻射点を検出。はくちょう座周辺でも不穏な動きを感じさせるが、群活動検出には至らなかった。 </UL> <H5>●5月26/27日</H5> <UL> ２１時０４・０５分と立て続けにうしかい群と思われる流星が出現。それ以外は急速に広がった薄雲の影響もあってか特に異常はなかった。 </UL> <H5>●5月27/28日</H5> <UL> 夕方から薄曇で観測は半ばあきらめていたが、夜半過ぎに目が覚めるとまずまずの天気。うしかい群は数こそ少ないものの確実な活動を見せていたが、南天のさそり座周辺は平穏なままだった。 </UL> <UL> 今年のＰＷ群、やはり要注意のようですね。６月２３・２４日と既に休暇を取得済みで、晴れ間を求めて車で彷徨う予定です。 </UL> <H5>●5月28/29日</H5> <UL> 夜半過ぎから曇りの予報のため、うしかい～ヘルクレスを中心に観測。月明かりのある割には透明度がよいが、２２時３０分ごろから雲が広がり４５分に観測打ち切り。うしかいα・かんむりξ群と思われる流星がそれぞれ１つ出現した以外は特に異常なし。 </UL> <DIV align="right" 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