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IAUC 5302: 1986 VIII; RS Oph; WX Cet

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IAUC number 

                                                  Circular No. 5302
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


PERIODIC COMET MACHHOLZ (1986 VIII)
     Continuation to the ephemeris on IAUC 5301:

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     July 27     9 06.86    +28 39.8    1.045    0.251     5.9
          28     9 20.69    +29 00.0
          29     9 34.32    +29 08.8    1.009    0.317     7.0
          30     9 47.77    +29 07.7
          31    10 01.02    +28 57.8    0.980    0.380     7.9
     Aug.  1    10 14.07    +28 40.1
           2    10 26.89    +28 15.3    0.960    0.441     8.6
           3    10 39.45    +27 44.1
           4    10 51.73    +27 07.1    0.948    0.498     9.3
           5    11 03.71    +26 25.0
           6    11 15.35    +25 38.5    0.942    0.554     9.8
           7    11 26.65    +24 48.0
           8    11 37.59    +23 54.3    0.944    0.607    10.3
           9    11 48.15    +22 57.9
          10    11 58.34    +21 59.3    0.952    0.658    10.7
          11    12 08.15    +20 59.1
          12    12 17.58    +19 57.7    0.966    0.708    11.1


RS OPHIUCHI
     T. Iijima, Asiago Astrophysical Observatory, communicates: "An
optical spectrum (spectral range 396-510 nm, resolution 0.2 nm) of the
recurrent nova RS Oph taken on July 1.96 UT shows that emission lines
of H I and He I are accompanied by a blueshifted broad emission
component.  The integrated flux of the broad component is about 0.8
times lower than that of the narrow one for H beta, but it is 1.8
times higher for H gamma and 2.8 times higher for He I 447 nm.  Their
FWHM is about 1600 km/s, and the displacements with respect to the
narrow components are -1200 km/s.  The broad components were also seen
in 1990 but were significantly fainter, and they were not detectable
in 1988.  The activity of this object seems to be increasing."


WX CETI
     F. M. Bateson, Royal Astronomical Society of New Zealand, reports
that A. F. A. L. Jones, Nelson, observed this object (cf. IAUC 4792,
4793, 4796, 4814, 5006) at mag 12.2 on July 8.78 UT.


1991 July 9                    (5302)              Brian G. Marsden

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