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IAUC 5988: 1994O; 1994j; P/SCHWASSMANN-WACHMANN 1

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                                                  Circular No. 5988
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@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


SUPERNOVA 1994O IN MARKARIAN 268
     C. Pollas, Observatoire de la Cote d'Azur, reports his discovery
of a supernova of mag 18-19 in Markarian 268 on films taken May
6.93 and 7.88 UT.  SN 1994O is located at R.A. = 13h38m53s.85, Decl.
= +30o37'51".5 (equinox 1950.0), which is superimposed on the dark
central part of the galaxy and is 2".5 west and 2".5 north of the
galaxy's center.  Nothing is visible at this location on films
taken Apr. 8.99 and earlier.  A nearby star of V about 15 has end
figures 57s.01, 36'33".8.
     P. Challis, Harvard-Smithsonian Center for Astrophysics; and
L. Wells, National Optical Astronomy Observatory, report their
confirmation of SN 1994O from imaging obtained at the 1.2-m telescope
at Mt. Hopkins on May 11 and 12 UT.  A spectrogram (range 320-800
nm) obtained at the Multiple Mirror Telescope (+ Blue Channel) on
May 13 shows strong P-Cyg Si II (635.5 nm), indicating that this
object is a type-Ia supernova within a week of maximum light.  The
redshift of the host galaxy, derived from the Ca H and K absorption,
is cz about 0.04.


PERIODIC COMET BROOKS 2 (1994j)
     S. Nakano, Sumoto, Japan, reports the recovery of this comet
independently by A. Nakamura and T. Seki, the following observations
showing a correction of Delta(T) = -0.01 day to the prediction on
MPC 18259 (ephemeris on MPC 23143):

     1994 UT             R.A. (2000) Decl.        m1    Observer
     May   8.77813   23 14 45.40   - 2 03 00.8   18.2   Nakamura
           8.78524   23 14 46.27   - 2 02 56.3            "
           8.78924   23 14 46.54   - 2 02 52.8            "
          12.77882   23 22 50.06   - 1 16 08.7   19     Seki

A. Nakamura (Kuma Kogen).  0.60-m f/6.0 Ritchey-Chretien + CCD.
T. Seki (Geisei).  0.60-m f/3.5 reflector.  Comet condensed with
  coma diameter 7".


PERIODIC COMET SCHWASSMANN-WACHMANN 1
     Total V magnitude estimates from H. Mikuz, Ljubljana, Slovenia
(0.20-m Baker-Schmidt camera + CCD):  Mar. 30.86 UT, 13.6; Apr.
7.85, 13.7; 29.84, 12.9; May 3.83, 12.7; 9.85, 12.7.


1994 May 14                    (5988)            Daniel W. E. Green

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