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IAUC 5524: 1992i; 1992d

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IAUC number 

                                                  Circular No. 5524
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)


COMET BRADFIELD (1992i)
     No further precise positions have been reported, but the
following approximate positions have been forwarded by D. Herald,
Woden, A.C.T.:

     1992 UT           R.A. (2000) Decl.        m1       Observer
     May   3.806       0 23.1      -15 41      10        Bradfield
           6.822       0 46.4      -15 40                Tregaskis
           9.822       1 17.5      -15 10                Camilleri
          10.836       1 30        -15 00                Tregaskis

W. A. Bradfield (Dernancourt, S. Australia).  Correction to IAUC
  5514.
T. B. Tregaskis (Mt. Eliza, Victoria).
P. Camilleri (Cobram, Victoria).

     Herald provides the following parabolic orbital elements,
which are necessarily very uncertain:

     T = 1992 May  26.76 TT           Peri. = 299.84
                                      Node  = 157.32    2000.0
     q = 0.5747 AU                    Incl. = 157.53

1992 TT     R. A. (2000) Decl.     Delta      r    Elong. Phase      m1
May  18     3 34.96    - 8 24.4    0.514    0.608   28.0  128.6      7.4
     20     4 16.23    - 5 05.2    0.513    0.595   26.0  131.8      7.3
     22     4 55.46    - 1 31.1    0.532    0.585   26.3  130.0      7.3
     24     5 30.33    + 1 55.7    0.568    0.578   28.2  124.2      7.4
     26     5 59.80    + 5 00.9    0.617    0.575   30.6  116.3      7.5
     28     6 23.93    + 7 39.7    0.678    0.575   32.7  107.7      7.8
     30     6 43.38    + 9 53.7    0.745    0.579   34.3   99.1      8.0
June  1     6 58.95    +11 46.5    0.817    0.587   35.3   90.9      8.2
      3     7 11.43    +13 22.3    0.893    0.598   35.8   83.3      8.5
      5     7 21.49    +14 44.5    0.969    0.611   35.8   76.2      8.8
      7     7 29.66    +15 55.9    1.046    0.628   35.4   69.6      9.1


COMET TANAKA-MACHHOLZ (1992d)
     Total visual magnitude estimates:  May 12.32 UT, 7.0 (J. E.
Bortle, Stormville, NY, 10x50 binoculars); 16.93, 7.3 (J. Shanklin,
Cambridge, England, 0.2-m refractor).


1992 May 18                    (5524)            Daniel W. E. Green

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