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IAUC 5353: ARAKELIAN 120; N Sct 1991; 1990c

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                                                  Circular No. 5353
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


ARAKELIAN 120
     B. M. Peterson, B. Ali, R. M. Wagner, and R. Bertram, Department
of Astronomy, The Ohio State University, communicate:  "The
Seyfert-1 galaxy Arakelian 120 is currently in its faintest recorded
state since late 1976.  We obtained three spectra of this galaxy
with the OSU CCD Spectrograph on the 1.8-m telescope at Lowell
Observatory during the period Sept. 13.4-15.4 UT.  From these data, we
estimate the rest-frame continuum flux at 520.0 nm to be 7.4 x
10E-15 erg sE-1 cmE-2 AE-1.  In addition, CCD photometry obtained by
J. Noble (Georgia State University) on Sept. 22 at the 1.07-m
telescope gives V = 14.08 +/- 0.05, also consistent with a low-state
brightness.  This low continuum state follows a slow decrease in
brightness that took place during late 1990 and early 1991.  We urge
further spectrophotometric observations by other observers in order
to determine the emission-line response, as an increase in the
continuum level can be reasonably expected during the next few months."


NOVA SCUTI 1991
     K. J. Mighell and T. E. Harrison, Mount Stromlo Observatory,
report:  "We obtained the following infrared photometry (+/- 0.03
mag) of this object with the 2.3-m telescope at Siding Spring (+
IRPS):  Sept. 24.39 UT, J = 10.67, H = 10.44, K = 9.85, L = 9.21.
The resulting colors are indicative of free-free emission, and are
not too different from those reported by Feast and van Wyk (IAUC
5335) for Sept. 2.79."


COMET LEVY (1990c)
     Ephemeris continuation from orbital elements on MPC 17596:

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Sept.21     9 39.51    +19 40.4    5.283    4.516    15.2
     Oct.  1     9 43.78    +19 55.1
          11     9 47.25    +20 15.4    5.225    4.719    15.3
          21     9 49.75    +20 42.5
          31     9 51.16    +21 17.2    5.100    4.918    15.5
     Nov. 10     9 51.32    +22 00.2
          20     9 50.09    +22 52.0    4.939    5.114    15.6
          30     9 47.35    +23 52.3
     Dec. 10     9 43.01    +25 00.2    4.791    5.307    15.7


1991 September 25              (5353)             Daniel W. E. Green

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