TA e-circular

<title>TA e-circular</title>
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THE ASTRONOMER Electronic Circular No 847       1994 June 3 20.05UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
INTERNET: GMH at AST.STAR.RL.AC.UK  or    GMH at GXVG.AST.CAM.AC.UK
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PERIODIC COMET SHOEMAKER 4 (1994k)
Improved elements for this comet (cf E842) confirm it is of short
period:
T  1994 Oct  31.2310 TT      w 196.52100 )
e  0.52851000                O  92.60300 ) 2000.0
q  2.9250300 A.U.            i  25.34500 )
Source: IAUC 5998    Positions are geocentric

Ephemeris by Hurst using EPH.EXE by N.James:

m = 10.0 + 5.0 log R + 10.0 log r

  Date    R.A. (2000) Dec.     R       r     Elong  Mag.    Motion
          h  m       o  '     (AU)    (AU)     o          "/hr P.A.
1994 May
  28.00  17 14.11  -10 47.8   2.152   3.135  163.0  16.6    28  241
1994 June
   2.00  17 10.64  -11 16.5   2.127   3.123  166.8  16.6    30  240
   7.00  17  6.99  -11 47.8   2.109   3.111  168.9  16.5    32  239
  12.00  17  3.25  -12 21.5   2.097   3.099  168.5  16.5    33  238
  17.00  16 59.52  -12 57.4   2.093   3.087  165.7  16.5    33  236
  22.00  16 55.90  -13 35.3   2.095   3.076  161.5  16.5    32  233
  27.00  16 52.48  -14 14.7   2.104   3.065  156.8  16.5    31  230
1994 July
   2.00  16 49.36  -14 55.5   2.120   3.055  151.9  16.5    30  226
   7.00  16 46.59  -15 37.4   2.142   3.044  146.9  16.5    28  221
  12.00  16 44.27  -16 19.9   2.170   3.035  141.9  16.5    26  215
  17.00  16 42.45  -17  3.0   2.203   3.025  136.9  16.5    24  207
  22.00  16 41.17  -17 46.3   2.240   3.016  132.0  16.5    23  198
  27.00  16 40.45  -18 29.6   2.283   3.008  127.2  16.6    22  188
1994 Aug
   1.00  16 40.31  -19 12.7   2.329   3.000  122.5  16.6    22  177
   6.00  16 40.76  -19 55.5   2.379   2.992  118.0  16.6    22  166
  11.00  16 41.80  -20 37.8   2.431   2.984  113.5  16.7    23  156
  16.00  16 43.44  -21 19.6   2.486   2.977  109.2  16.7    25  147
  21.00  16 45.64  -22  0.6   2.544   2.971  105.0  16.8    27  140
  26.00  16 48.40  -22 40.8   2.602   2.965  100.9  16.8    29  134
  31.00  16 51.70  -23 20.0   2.663   2.959   96.9  16.8    31  128

PERIODIC COMET SHOEMAKER-LEVY 9 (1993e)
D. Jewitt and N. Trentham, University of Hawaii, communicate:
"New observations from the University of Hawaii 2.2-m telescope
show that nucleus 15 (= G) is double.  On May 7 UT, the fainter
component (15b) appears 3".5 east and 3".7 north of the brighter
(15a).  The red magnitude difference measured in a 1"-radius
aperture is 3.8.  The fainter component is not evident in
observations taken in previous months under similar observing
conditions."
IAUC 5999

UV PERSEI
Bill Worraker, Didcot, England reports that he also confirmed this
outburst but apparently the original e-mail message to TA HQ
went astray:
1994 May 30.971UT, 12.6 (BAAVSS sequence, 0.26-m reflector)
         31.008UT, 12.4 (ditto)

Guy M Hurst


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Date: Fri, 3 Jun 1994 21:38:46 +0100 (BST)
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