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IAUC 5335: 1991w; 1990g; N Sct 1991

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IAUC number 

                                                  Circular No. 5335
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


COMET McNAUGHT-RUSSELL (1991w)
     R. H. McNaught, Anglo-Australian Observatory, reports his
discovery of another comet, this time on an R plate taken by K. S.
Russell with the U.K. Schmidt on Sept. 3:

     1991 UT             R.A. (1950) Decl.        m1    Observer
     Sept. 3.53137   21 55 29.34   - 1 52 47.2   18.0   Russell
           3.57650   21 55 28.04   - 1 53 05.8            "
           4.60417   21 54 55.06   - 2 01 42.6   17.5   McNaught
           4.65301   21 54 53.47   - 2 02 03.5            "

K. S. Russell (Siding Spring).  Diffuse "asteroid" trail (condensation
   about 2" across) with a tail 1' long in p.a. 0 deg.
R. H. McNaught (Siding Spring).  Uppsala Southern Schmidt.  Very faint
   tail in p.a. 0 deg.


COMET McNAUGHT-HUGHES (1990g)
     Continuation to the ephemeris on IAUC 5288:

     1991 ET      R.A. (1950) Decl.     Delta      r       m1
     Sept. 1    12 15.87    +35 30.9    4.068    3.293    15.7
          11    12 20.67    +35 37.0
          21    12 25.92    +35 53.4    4.176    3.412    15.9
     Oct.  1    12 31.46    +36 21.9
          11    12 37.13    +37 04.1    4.187    3.537    16.1
          21    12 42.76    +38 02.2
          31    12 48.17    +39 17.9    4.114    3.666    16.2
     Nov. 10    12 53.15    +40 53.6
          20    12 57.45    +42 51.1    3.982    3.800    16.3
          30    13 00.74    +45 11.6
     Dec. 10    13 02.59    +47 55.7    3.832    3.937    16.4


NOVA SCUTI 1991
     The following observations were obtained at the South African
Astronomical Observatory on Sept. 2.79 UT by M. W. Feast (JHKL) and F.
van Wyk (UBVRI): V = 10.77, B-V = +1.78, U-B = +2.08, Cousins V-R =
+1.13, Cousins V-I = +2.35, J = 8.48, H = 8.14, K = 7.66, L= 6.86.
These colors are unlike those of normal novae.


1991 September 5               (5335)              Brian G. Marsden

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