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IAUC 3992: 1984o; TT Ari

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IAUC number 

                                                  Circular No. 3992
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


COMET MEIER (1984o)
     The following precise positions have been reported:

      1984 UT           R.A.    (1950.0)   Decl.     Observer
      Sept.18.15453    15 08 56.63    +11 14 14.6    Gibson
           19.12049    15 07 04.36    +10 32 56.2    Skiff
           19.16043    15 06 59.79    +10 31 19.4    Gibson
           20.00312    15 05 26.05    +09 56 44.0    Schwartz
           21.00242    15 03 38.64    +09 17 00.0      "

B. Skiff (Lowell Observatory).  Position uncertain.  Measurer: E.
   Bowell.
J. Gibson (Palomar Observatory).  Sept. 18, center of rather weak
   trail.  Sept. 19, relatively broad trail.
G. Schwartz (Oak Ridge Observatory).  Haze on Sept. 21.  Images
   diffuse with slight condensation.  Measurer: D. W. E. Green.

     The following parabolic orbital elements, by the undersigned,
are from 4 observations, Sept. 18-21:

          T = 1984 Oct. 13.63 ET  Peri. = 127.15
                                  Node  =  10.75   1950.0
          q =   0.8567 AU         Incl. = 145.64

     1984 ET     R.A. (1950.0) Decl.      p        r       m1

     Sept.17    15 11.29    +12 05.7    1.154    0.986    11.8
          22    15 01.93    + 8 38.9
          27    14 54.13    + 5 46.4    1.390    0.910    11.8
     Oct.  2    14 47.33    + 3 18.9
           7    14 41.17    + 1 09.7    1.598    0.866    11.9
          12    14 35.45    - 0 46.1
          17    14 30.04    - 2 32.2    1.760    0.859    12.1

     Total visual magnitude estimate: Sept. 20.17 UT, 11.6 (A.
Hale, 0.20-m reflector, Frazer Park, CA).


TT ARIETIS
     J. Mattei, AAVSO, informs us that this object is at its
'down' state.  Visual magnitude estimates: July 25.29 UT, 14.2 (J.
Bortle, Stormville, NY); 25.35, 14.5 (Bortle); 26.36, 15.4 (Bortle);
Aug. 25,30, 15.5 (M. Idem, Cheehtowaga, NY); 25.3, 15.6 (J.
Riggs, Buffalo, NY); Sept. 1.40, [15.5 (Bortle).


1984 September 21              (3992)            Daniel W. E. Green

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