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IAUC 2996: N Oph 1976; 1975n

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                                                  Circular No. 2996
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Cable Address: SATELLITES, NEWYORK
Western Union: RAPID SATELLITE CAMBMASS


NOVA OPHIUCHI 1976
     P. Pesch, Warner and Swasey Observatory, reports that an
objective prism plate taken with the Burrell Schmidt telescope on Oct.
19.0 UT by P. Chen, L. Loucka and T. Robertson shows the spectrum
of the 'novalike object in Ophiuchus' (IAUC 2994) to be that of a
nova approximately 3-4 magnitudes below maximum.  According to C. B.
Stephenson the following emission lines appear to be present in the
spectrum: H-alpha, H-beta, N III 4640 A, H-gamma + [O III] 4363 A,
He + [Ne III] 3968 A, H-zeta + [Ne III] 3869 A.  The width of H-beta,
estimated to be ~50 A, indicates that the nova is a moderately fast one.
N. Sanduleak derived the magnitude B = 12.5 +/- 0.5 (on Oct. 19.0) and
noted no star in this position on the red Palomar Sky Survey print.


COMET WEST (1975n)
     Further precise positions (of nucleus A) follow:

     1976 UT             R. A. (1950) Decl.       Mag.   Observer
     June  4.72802    18 48 31.90   +16 52 58.2          Gilmore
           4.73991    18 48 30.25   +16 52 52.3            "
          25.57225    18 01 52.10   +12 52 42.7          Kilmartin
          25.59376    18 01 49.51   +12 52 25.5            "
     July  1.00651    17 52 07.49   +11 34 47.0          Haddow
           4.98278    17 45 46.17   +10 36 35.6   10.0   Griffiths
           8.68889    17 40 26.53   + 9 41 54.0          Candy
     Aug. 20.90928    17 14 26.38   + 0 20 15.3   13.5   Rutter

A. C. Gilmore and P. M. Kilmartin (Carter Observatory).  Measurer:
   Kilmartin.  Offsets for nucleus B: June 4.73 UT, 47".9 in p.a.
   294o; 25.58, 40".4, 300o.  Offsets for nucleus D: June 4.73 UT,
   22".5 in p.a. 304o; 25.58, 18".9, 306o.
K. A. Haddow, A. Griffiths and G. H. Rutter (Woolston Observatory).
   Measurer: R. L. Waterfield.  July 4: fairly well condensed inner
   coma of diameter 1', very diffuse outer coma of diameter 5'.
   Aug. 20: very diffuse outer coma of diameter 3', poorly condensed
   toward the center
M. P. Candy (Perth Observatory, Bickley).  33-cm astrograph.

     E. Roemer, University of Arizona, writes that exposures with
the 229-cm reflector on Sept. 19 showed the magnitudes of the nuclei
to be: A = 19.3; D = 20.3: (the most diffuse); B = 20.1.


1976 October 21                (2996)              Brian G. Marsden

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