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IAUC 5560: 1992k; 1992 LR

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                                                  Circular No. 5560
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 MACHHOLZ (1992k)
     No further precise positions have been reported.  D. Machholz,
Colfax, CA, reports the following visual observations made with a
0.15-m reflector (July 6, 7) and a 27x120 monocular (July 8):

     1992 UT           R.A. (2000) Decl.        m1
     July  6.460       5 01.8      +33 53       9.1
           7.470       5 06.6      +33 16       8.7
           8.467       5 10.9      +32 36       9.0


1992 LR
     Improved orbital elements from MPC 20514:

     T = 1992 July 25.3715 TT         Peri. =  67.4941
     e = 0.408705                     Node  = 233.4320  2000.0
     q = 1.081985 AU                  Incl. =   2.0250
       a =  1.829856 AU    n = 0.3981793    P =   2.475 years

1992 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    V
July  7    16 33.88   - 5 44.5   0.105   1.099  139.6   36.8   15.3
      9    16 41.43   - 4 56.4   0.102   1.096  139.2   37.4   15.2
     11    16 49.82   - 4 06.9   0.098   1.093  138.9   37.7   15.2
     13    16 59.10   - 3 16.0   0.095   1.090  138.8   37.9   15.1
     15    17 09.30   - 2 23.8   0.092   1.088  139.0   37.9   15.0
     17    17 20.43   - 1 30.7   0.089   1.086  139.3   37.6   14.9
     19    17 32.49   - 0 37.0   0.087   1.084  139.8   37.2   14.9
     21    17 45.45   + 0 16.8   0.085   1.083  140.5   36.6   14.8
     23    17 59.25   + 1 10.0   0.083   1.082  141.4   35.8   14.7
     25    18 13.82   + 2 01.6   0.082   1.082  142.5   34.9   14.7
     27    18 29.01   + 2 50.9   0.081   1.082  143.7   33.8   14.6
     29    18 44.69   + 3 36.7   0.081   1.083  145.0   32.6   14.6
     31    19 00.66   + 4 18.3   0.081   1.084  146.3   31.3   14.6
Aug.  2    19 16.73   + 4 54.9   0.082   1.085  147.7   30.0   14.5
      4    19 32.69   + 5 25.9   0.083   1.087  149.1   28.6   14.5
      6    19 48.33   + 5 51.1   0.085   1.089  150.5   27.3   14.6
      8    20 03.49   + 6 10.5   0.087   1.092  151.8   26.0   14.6
     10    20 18.01   + 6 24.1   0.090   1.094  153.1   24.7   14.6


1992 July 8                    (5560)            Daniel W. E. Green

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