TA e-circular

<title>TA e-circular</title>
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THE ASTRONOMER Electronic Circular No 679       1992 Oct 24 13.09UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
TELEX: 9312111261 Answerback: TA G      TELECOM GOLD: 10074:MIK2885
GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS  STARLINK: RLSAC::GMH
GMH at UK.AC.CAM.ASTRONOMY.STARLINK            STARLINK: CAVAD::GMH
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SUPERNOVA 1992bd IN NGC 1097
Chris Smith, Cerro Tololo Interamerican Observatory; and Lisa
Wells, Kitt Peak National Observatory, report their discovery of a
supernova located 1".5 east and 9" south of the nucleus of NGC 1097
(R.A. = 2h44m11s, Decl. = -30 29'.1, equinox 1950.0).  The object
was found in a 20-min I-band CCD exposure taken by Smith on Oct.
12.26 UT with the CTIO 0.9-m telescope; it is also apparent in B,
V, and R CCD images taken subsequently, and has a magnitude of V
about 15 and a color of B-V about +2.6.  Nothing is visible at this
location in published images of the nucleus of NGC 1097 (e.g.,
Rickard 1975, A.Ap. 40, 339).  Due to the highly reddened nature of
this object, infrared and radio observations may prove interesting.
IAUC 5638

SUPERNOVA 1992be IN ANONYMOUS GALAXY
Jean Mueller reports her discovery of a supernova of mag about 17
on a red plate taken Sept. 30 and a blue plate taken Oct. 1; both
plates were taken by C. Brewer and Mueller with the Oschin Schmidt
Telescope in the course of the second Palomar Sky Survey. The
supernova is located about 3" west and 10" north of the nucleus
of a galaxy at R.A. = 3h59m28s.71, Decl. = +27 38'47".1 (equinox
1950.0).  The measured position of the supernova is R.A. =
3h59m28s.47, Decl. = +27 38'57".3.
IAUC 5640

COMET HELIN-LAWRENCE (1992q)
Updated orbital elements:
T  1993 Mar  15.0512 TT      w 268.79320 )
e  0.96552300                O 194.66960 ) 2000.0
q  2.0400110 A.U.            i 106.85130 )
Source: IAUC5639    Positions are geocentric

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

m =  8.5 + 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.
1992 Oct
  25.00   0 33.13  -44 26.0   1.965   2.611  120.2  14.1    88  227
  30.00   0 21.02  -46 15.9   2.003   2.576  114.4  14.1    80  231
1992 Nov
   4.00   0  9.22  -47 47.7   2.046   2.543  108.6  14.1    72  234
   9.00  23 58.02  -49  2.5   2.095   2.510  103.0  14.1    63  238
  14.00  23 47.64  -50  2.2   2.147   2.478   97.5  14.1    55  241
  19.00  23 38.27  -50 48.9   2.201   2.446   92.2  14.1    47  244
  24.00  23 30.02  -51 24.6   2.255   2.415   87.1  14.1    39  247
  29.00  23 22.97  -51 51.5   2.310   2.386   82.2  14.1    32  249
1992 Dec
   4.00  23 17.13  -52 11.6   2.363   2.357   77.6  14.1    26  250
   9.00  23 12.48  -52 26.6   2.413   2.329   73.2  14.1    20  251
  14.00  23  8.95  -52 37.9   2.461   2.302   69.1  14.1    14  250
  19.00  23  6.50  -52 46.8   2.504   2.276   65.3  14.1    10  246
  24.00  23  5.06  -52 54.1   2.544   2.251   61.7  14.1     6  231
  29.00  23  4.57  -53  0.9   2.578   2.227   58.4  14.0     3  183

Guy M Hurst
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