TA e-circular

<title>TA e-circular</title>
<pre>
THE ASTRONOMER Electronic Circular No 69 1987 Oct 05  22.10UT.
Telecom Gold 72:MAG60138
Ed:Guy M Hurst, 16, Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP, England. Telephone:(0256)471074.Int:+44256471074
Telex:265871(MONREF G) Quote"72:MAG60138 ATT G.HURST"in FIRST line.
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COMET BRADFIELD (1987s)
     The parabolic orbital elements on MPC 12309 (from observa-
tions extending to Sept. 20; ephemeris on MPC 12326) should be
replaced by the elliptical result below, based on 50 observations
extending to Oct. 1, the most recent of them being the following,
by D. Herald, Kambah, near Canberra:

         1987 UT               R.A. (1950) Decl.
         Sept.29.43845      15 45 07.41      -11 48 26.9
         Oct.  1.40740      15 50 22.04      -11 16 15.2

                     Epoch 1987 Nov. 21.0 ET
         T = 1987 Nov. 7.2638 ET     W =  73.8901
         e =   0.995299              O = 267.3792   1950.0
         q =   0.869152 AU           i =  34.0895

     1987 ET      R.A. (1950) Decl.     Delta      r       m1
     Oct.  2    15 51.97    -11 06.4
           4    15 57.45    -10 32.4    1.375    1.067     6.5
           6    16 03.05    - 9 57.4
           8    16 08.76    - 9 21.3    1.345    1.028     6.3
          10    16 14.60    - 8 43.9
          12    16 20.56    - 8 05.4    1.314    0.992     6.1
          14    16 26.65    - 7 25.5
          16    16 32.87    - 6 44.3    1.280    0.959     5.9
          18    16 39.23    - 6 01.7
          20    16 45.71    - 5 17.7    1.245    0.931     5.7
          22    16 52.34    - 4 32.2
          24    16 59.12    - 3 45.2    1.208    0.908     5.5
          26    17 06.04    - 2 56.6
          28    17 13.13    - 2 06.5    1.169    0.889     5.3
          30    17 20.37    - 1 14.8
     Nov.  1    17 27.80    - 0 21.5    1.130    0.877     5.2
           3    17 35.40    + 0 33.3
           5    17 43.21    + 1 29.6    1.090    0.870     5.1
           7    17 51.22    + 2 27.3
           9    17 59.46    + 3 26.5    1.050    0.870     5.0
          11    18 07.95    + 4 27.1
          13    18 16.71    + 5 29.0    1.011    0.876     4.9
          15    18 25.75    + 6 32.1
          17    18 35.09    + 7 36.3    0.973    0.887     4.9


                                                  IAUC 4460

   At last this comet maybe just visible to some of you
   with a clear western horizon.  As can be seen,by early
   November it should be quite well placed after sun-down

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QU VULPECULAE (NOVA VULPECULAE 1984 No. 2)
     Visual magnitude estimates: Sept. 14.8 UT, 12.7 (A. Mizser,
Budapest, Hungary); 16.02, 12.3 (P. Schmeer, Bischmisheim, West
Germany); 29.98, 12.3 (Schmeer); 30.96, 12.4 (Schmeer).

                                              IAUC 4461
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Circ. 68 should have commenced as above, something went wrong
during transmission, sorry about this.

Alan Young.
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