2003”N3ŒŽ3“ś                  ŽR –{ ‘¬ •ń                 ISSN 0915-9177

                               YAMAMOTO CIRCULAR                  ‡‚2384

”­sF§656-0011•ŗŒÉŒ§F–{ŽsąxŒū‚P-‚R-‚P‚X@@“ŒˆŸ“V•¶Šw‰ļ‘¬•ń•”

—X•ÖU‘ÖŒūĄF00980-8-189107   ‰Į“üŽŅ–¼F“ŒˆŸ“V•¶Šw‰ļ‘¬•ń•”   w“Ē—æ‚P•”130‰~

Published by the Department of Yamamoto Circular, Oriental Astronomical Association,

P. O. Box No.32, Sumoto, Hyogo-Ken, 656-8691 JAPAN

e-Mail address: (Subscription)  URL: http:/www.oaa.gr.jp/~oaacs/yc.htm

•ŅWF’†–ģ Žåˆź   0799-22-3747  Fax: 23-1104   e-Mail address:

Editor: Syuichi Nakano, 3-19, Takenokuchi 1 Chome, Sumoto, Hyogo-Ken, 656-0011 JAPAN

 

$B$*CN$i$;(J

$B!!:rG/(J6$B7n$+$i$N;3K\B.Js$NH/9T$,BgJQCY$l$F$*$j!$$4LBOG$r$*$+$1$7$F?=$7Lu$"$j$^$;$s!%$3$N$?$S!$;3K\B.Js$NJT=8$rCfLnMh$NM-NA9XFI$5$l$^$9J}$O!$$*e5-$N?7$7$$B.JsIt$K$4O"Mm$/$@$5$$$^$9$h$&$*4j$$$$$?$7$^$9!%$=$N:]$K$O!$;3K\E7J8Bf$+$i$*Aw$j$7$F$$$^$99XFINA$NNN<}=q$N%3%T!><$r$"$o$;$F$*Aw$j$/$@$5$$!%L$Ce$N(JYC2374$B!A(J2378$B$^$G$O;3K\E7J8Bf$+$i$$$:$l8eF|$K!$$^$?!$(JYC2379$B!A(J2383$B$^$G$O!$(JOAA$B;vL36I$+$iAa5^$KH/Aw$9$k$h$&$3$A$i$G>$NJ}$O!$:#$^$G$I$*$jL5NA$G$*Aw$j$$$?$7$^$9!%$^$?!$H/9T$h$j#1%v7n$r7P2a$7$?;3K\B.Js$O>e5-$N(JURL$B$G1\Mw$9$k$3$H$,$G$-$^$9!%(J

 

 

Editorial

$B!!!!(JSyuichi Nakano took over the Editor of the Yamamoto Circular and also engages in the publication business, so all communications should be addressed to the above information.  The free electronic version will be available at the above URL from one month later after publication.

Former editor$B!$(JIchiro Hasegawa

 

 

$B%i%s%@%&8:?j$H2P5e72(J  (Landou Damping and Fireballs)

$B!!H,%v3YFnO<E7J8Bf$G9T$o$l$F$$$kEEN%AXEEGH4QB,$G(J2003$BG/#17n#8F|!$(J10$BF|!$(J14$BF|$K%i%s%@%&8:?j$,4QB,$5$l$?!%%i%s%@%&8:?j$O!$EEN%AX$KB@M[7OFb$NHy>.E7BN$,FMF~$7$F$-$?$H$-$K8=$l$k8=>]$N2DG=@-$,$"$k$H9M$($i$l$F$*$j!$DL>o!$G/4V?t2s4QB,$5$l$k!%$3$N%i%s%@%&8:?j$N=P8=$N$"$H!$F1E7J8Bf$+$i$NJs9p$G$O!$#17n(J28$BF|0J9_$+$i#27n=i=\$K$+$1$F$N#3Lk$K$o$?$C$F2P5e$N=P8=$,Hs>o$KB?$+$C$?$H$$$&!%(J

 

 

$B9-Egp(@P(J  (Meteorite in Hiroshima)

$B!!#27n(J4$BF|!$9-Eg;T$NKL@>9Y30!$%5%C%+!<>l$N6a$/$N9)>l$Kp(@P$NMn2<$,3NG'$5$l$?!%20:,$HE70f$KBg$-$J7j$,6u$$$F$$$?!%Mn2<$NL\7b>pJs$ODj$+$G$O$J$$$,!$(JLAT$B$N66K\="0B;a$K$h$k$H!$(J2$B7n(J1$BF|(J22$B;~H>2a$.$KK~7nDxEY$N2P5e$,Bg:e@tFn;T$d9bCN;T$G8+$+$1$i$l$F$$$k$H$$$&!%=P8=;~9o$O!$H,%v3YFnO<E7J8Bf$N9bCN%l!<%@!<%5%$%H$N4QB,$G$O(J22$B;~(J40$BJ,$H5-O?$5$l$F$$$k!%$?$@$7!$BPCO7PO)$,7hDj$G$-$k$h$&$J>\$7$$>pJs$O!$$^$@!$Js9p$5$l$F$$$J$$!%(J

 

 

2003$BG/(J2$B7n(J6$BF|=P8=$NBg2P5e(J  (Fireball on 2003 Feb. 6)

$B!!FAEg8)$K$"$k3$FnE7J8Bf!J&K(J=+134$B!k(J18$B!G(J 28$B!I(J$B!$&U(J=+33$B!k(J38$B!G(J 41$B!I(J$B!$#h(J=253-m$B!K$G9T$o$l$F$$$kA4E74F;k%+%a%i$K(J2$B7n(J6$BF|Lk(J20$B;~(J30$BJ,:"$KBg2P5e$,$H$i$($i$l$?!%F1=j$N66K\="0B;a$OH/8wE@$H>CLGE@$rB,Dj$7!$

$B!!!!!!!!!!!!!!;~9o(J(JST)       $B&A(J (2000.0) $B&D(J        $B&K!#(J    $B&U!#(J   $B9bEY(J

      $BH/8wE@!'(J20h 30m 02s    02h 00m   -20$B!k(J36$B!G(J  +131.9   +31.8    95 Km

      $B>CLGE@!'(J20  30  26     07  27    -42  25    +134.9   +32.26   30  

 

$B!!0J>e$N4QB,$+$i(JOAA$B7W;;2]$G$O!$

                                  $B!#(J       $B!#(J

$B$?B.EY$O#V(J$B!g(J=6.72Km/s$B!$mU

        $B#T(J = 2003 Jan. 13.83 TT

                $B!#(J

        $B&X(J = 330.90                   $B#e(J =   0.4052

        $B&8(J = 137.22    (2000.0)       $B#a(J =   1.5976 AU

        $B#i(J =   0.47                   $B#n(J =   0.48809

        $B#q(J =   0.9502 AU              $B#P(J =   2.02 $BG/(J

 

 

$B9)F#!&F#@nWB@1(J  C/2002 X5 (Kudo-Fujikawa)

  $B6aF|E@DL2a0J8e$N4QB,$,3FCO$+$iJs9p$5$l$F$$$k!%4c;kA48wEY$,7'K\8)$N1'ET5\>O8c;a$+$i#27n(J27$BF|$K#8Ey!$;kD>7B(J1'$B$HJs9p$5$l$?!J@1$N9->l(JHAL News-028$B!K!%$^$?!$>eHx$NLgED7r0l;a$+$i!$2f$,9q$G$O=i$a$F$H$J$k6aF|E@DL2a8e$N(J28$BF|M<9o!$9bEY$,(J7ß$B$NDc6u$G$N4QB,$,Js9p$5$l$?!%;a$K$h$k$H!$WB@1$O!$;kD>7B(J0'.4$B$[$I$G!$>.$5$J=88wIt$,;kD>7B(J1'.6$B$N%3%^$Gr7o$O!$$3$l$+$i7B$N5U?t$O(J(1/a)org.=+0.000988$B!J#a(J=$BLs(J1000 AU$B!($?$@$7!$@:EY(JQ=5$B!K$HD91_50F;$rF0$$$F$$$k!%(J

 

                             Epoch = 2003 Feb. 10.0 TT  $B!#(J

                   $B#T(J = 2003 Jan. 29.0024 TT    $B&X(J = 187.5726

                   $B#e(J =   1.000032              $B&8(J = 119.0630     (2000.0)

                   $B#q(J =   0.189947 AU           $B#i(J =  94.1516

             (1/a)org.=  +0.000988              A1 =  +2.29

             (1/a)fut.=  -0.000207              A2 =  +0.7924

                         ( Q = 5 )

 

2003/        $B&A(J  (2000) $B&D(J      $B"$(J      $B#r(J      Elong. Phase    m1   $BE7J8GvL@=*N;;~(J

  0h TT     h  m         ,        AU      AU                  $BEy(J     h”    A ”

Mar.  2   02 42.85  -35 08.0    0.916   0.955    59.9   63.9    7.1    +6.7   38.0

      4   03 01.34  -32 58.1    0.942   0.999    62.2   61.3    7.4    +9.5   37.9

      6   03 17.93  -30 46.7    0.972   1.043    64.1   58.9    7.6   +12.1   38.1

      8   03 32.82  -28 36.8    1.005   1.085    65.8   56.5    7.9   +14.5   38.5

     10   03 46.22  -26 30.5    1.042   1.127    67.2   54.3    8.1   +16.6   39.1

     12   03 58.31  -24 29.2    1.082   1.169    68.4   52.2    8.3   +18.5   39.9

     14   04 09.26  -22 33.7    1.124   1.210    69.4   50.3    8.6   +20.2   40.8

     16   04 19.23  -20 44.5    1.168   1.250    70.1   48.4    8.8   +21.7   41.9

     18   04 28.35  -19 01.8    1.215   1.290    70.6   46.7    9.0   +23.0   43.1

     20   04 36.73  -17 25.5    1.263   1.329    71.0   45.1    9.2   +24.0   44.4

     22   04 44.47  -15 55.3    1.313   1.368    71.2   43.6    9.5   +24.9   45.9

     24   04 51.66  -14 31.0    1.364   1.406    71.2   42.1    9.7   +25.6   47.4

     26   04 58.36  -13 12.3    1.416   1.444    71.1   40.8    9.9   +26.2   48.9

     28   05 04.63  -11 58.9    1.469   1.482    70.9   39.5   10.0   +26.5   50.6

     30   05 10.54  -10 50.4    1.523   1.519    70.6   38.3   10.2   +26.7   52.2

Apr.  1   05 16.12  -09 46.4    1.577   1.556    70.2   37.2   10.4   +26.8   53.9

                    m1 =  7.5 + 5 log $B"$(J + 10.0 log $B#r(J

 

 

$B%8%e%(%k%:!&%[%k%\%k%;%`WB@1(J  C/2002 Y1 (Juels-Holvorcem)

$B!!3FCO$G$N4c;k8wEY$OL@$k$/!$#7Ey5i$G4QB,$5$l$F$$$k!%4c;kA48wEY$O!$#27n(J20$BF|$K(J7.5$BEy!J1'ET5\>O8c!(7'K\8)!K!$(J25$BF|$K(J8.0$BEy!J1JEgOBO:!(@86p!K!$(J7.1$BEy!JBg2l(JHAL News-028$B!K!%$*$=$i$/!$#47n$K$O#4Ey!A#5Ey$^$GL@$k$/$J$k$@$m$&!%(JOAA$B7W;;2]$G$O!$(J2002$BG/(J12$B7n(J29$BF|$+$i(J2003$BG/#27n(J27$BF|$^$G$K9T$J$o$l$?(J573$B8D$N4QB,$+$i7B$,#a(J= 235 AU$B!$<~4|$,(J3600$BG/$[$I$ND9<~4|WB@1$G$"$k!%(J

 

                             Epoch = 2003 May 1.0 TT    $B!#(J

                   $B#T(J = 2003 Apr. 13.2512 TT    $B&X(J = 128.8241

                   $B#e(J =   0.997047              $B&8(J = 166.2192     (2000.0)

                   $B#q(J =   0.713729 AU           $B#i(J = 103.7813

             (1/a)org.=  +0.004261        (1/a)fut.= +0.004655 ( Q = 5 )

 

2003/        $B&A(J  (2000) $B&D(J      $B"$(J      $B#r(J      Elong. Phase    m1   $BE7J8GvL@3+;O;~(J

  0h TT     h  m         ,        AU      AU                  $BEy(J     h”    A ”

Mar.  2   21 26.60  +57 30.2    0.977   1.088    67.1   57.0    7.0   +30.6  219.2

      7   22 14.34  +53 39.8    1.040   1.021    60.3   57.6    6.7   +24.8  221.2

     12   22 48.88  +49 30.2    1.111   0.957    53.7   56.8    6.4   +20.0  223.5

     17   23 14.38  +45 22.9    1.188   0.896    47.5   54.9    6.2   +16.0  226.0

     22   23 33.84  +41 25.0    1.265   0.841    41.6   51.8    5.9   +12.8  228.5

     27   23 49.26  +37 37.0    1.341   0.794    36.1   47.7    5.6   +10.0  231.3

Apr.  1   00 01.97  +33 56.6    1.411   0.756    30.9   42.8    5.4    +7.7  234.2

          m1 =  6.5 + 5 log $B"$(J + 15.0 log $B#r!JWB@1$O!$M

$B(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(,(J