• MPC Preparation (Info)

  • MPEC 1998-L07 : COMET C/1998 J1 (SOHO)

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    M.P.E.C. 1998-L07                                Issued 1998 June 3, 22:03 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
       on behalf of Commission 20 of the International Astronomical Union by the
              Minor Planet Center, Smithsonian Astrophysical Observatory,
                              Cambridge, MA 02138, U.S.A.
    
                 BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
                       URL http://cfa-www.harvard.edu/iau/mpc.html
    
                                COMET C/1998 J1 (SOHO)
    
    Observations:
        CJ98J010  C1998 05 23.34639 05 39 22.71 -01 21 44.5          10.9 N      422
        CJ98J010  C1998 05 23.34713 05 39 23.00 -01 21 49.6          11.0 N      422
        CJ98J010  C1998 05 23.34786 05 39 23.30 -01 21 54.6          11.1 N      422
        CJ98J010  C1998 05 23.34859 05 39 23.57 -01 21 59.4          10.9 N      422
        CJ98J010  C1998 05 23.34932 05 39 23.84 -01 22 04.4          10.9 N      422
        CJ98J010  C1998 05 23.35564 05 39 26.29 -01 22 47.9                      422
        CJ98J010  C1998 05 23.36046 05 39 28.14 -01 23 21.0                      422
        CJ98J010  C1998 05 23.36843 05 39 31.26 -01 24 16.0           8.6 N      426
        CJ98J010  C1998 05 23.37517 05 39 33.88 -01 25 02.3           9.0 N      426
        CJ98J010  C1998 05 23.38078 05 39 36.03 -01 25 41.3           8.8 N      426
        CJ98J010  C1998 05 23.38620 05 39 38.13 -01 26 18.3           9.2 N      426
        CJ98J010  C1998 05 23.39117 05 39 40.07 -01 26 52.1           8.9 N      426
        CJ98J010  C1998 05 23.39747 05 39 42.44 -01 27 35.1           8.6 N      426
        CJ98J010  C1998 05 23.40146 05 39 43.99 -01 28 02.7           9.1 N      426
        CJ98J010 bC1998 05 24.35564 05 45 46.59 -03 15 29.3          11.2 N      422
        CJ98J010 bC1998 05 24.35639 05 45 46.89 -03 15 34.4          11.3 N      422
        CJ98J010 bC1998 05 24.35712 05 45 47.19 -03 15 39.6          10.9 N      422
        CJ98J010 bC1998 05 24.35786 05 45 47.44 -03 15 44.0          11.2 N      422
        CJ98J010 bC1998 05 24.35859 05 45 47.71 -03 15 48.8          11.3 N      422
        CJ98J010 bC1998 05 24.36581 05 45 50.41 -03 16 36.9          11.0 N      422
        CJ98J010  C1998 05 24.36708 05 45 50.92 -03 16 46.1           8.2 N      426
        CJ98J010 bC1998 05 24.36800 05 45 51.21 -03 16 51.5          11.0 N      422
        CJ98J010  C1998 05 24.37455 05 45 53.70 -03 17 35.3           8.9 N      426
        CJ98J010  C1998 05 24.38369 05 45 57.10 -03 18 35.9           9.4 N      426
        CJ98J010  C1998 05 24.39174 05 46 00.07 -03 19 29.0           9.2 N      426
        CJ98J010  C1998 05 24.39607 05 46 01.69 -03 19 58.0           9.1 N      426
        CJ98J010   1998 05 25.34528 05 51 50.78 -05 03 16.2                      415
        CJ98J010  C1998 05 25.35708 05 51 55.10 -05 04 30.7          11.3 N      422
        CJ98J010  C1998 05 25.35774 05 51 55.33 -05 04 34.9          11.4 N      422
        CJ98J010  C1998 05 25.35840 05 51 55.58 -05 04 39.4          11.3 N      422
        CJ98J010  C1998 05 25.35908 05 51 55.79 -05 04 43.5          11.1 N      422
        CJ98J010  C1998 05 25.35975 05 51 56.02 -05 04 47.8          10.9 N      422
        CJ98J010  C1998 05 25.36990 05 51 59.74 -05 05 52.9           8.3 N      426
        CJ98J010  C1998 05 25.37873 05 52 02.94 -05 06 49.6           8.9 N      426
        CJ98J010  C1998 05 25.38536 05 52 05.32 -05 07 31.9           9.2 N      426
        CJ98J010  C1998 05 25.39515 05 52 08.88 -05 08 34.7           8.9 N      426
        CJ98J010   1998 05 26.34687 05 57 47.95 -06 48 25.5                      415
        CJ98J010  C1998 05 26.35223 05 57 49.91 -06 48 58.7          11.7 N      422
        CJ98J010  C1998 05 26.35299 05 57 50.21 -06 49 03.3          11.6 N      422
        CJ98J010  C1998 05 26.35375 05 57 50.48 -06 49 08.3          11.7 N      422
        CJ98J010  C1998 05 26.35453 05 57 50.74 -06 49 12.9          11.7 N      422
        CJ98J010  C1998 05 26.35529 05 57 50.98 -06 49 17.4          11.5 N      422
        CJ98J010  C1998 05 26.37148 05 57 56.69 -06 50 57.6           9.2 N      426
        CJ98J010  C1998 05 26.37717 05 57 58.68 -06 51 32.8           9.6 N      426
        CJ98J010  C1998 05 26.38330 05 58 00.83 -06 52 10.9           9.6 N      426
        CJ98J010  C1998 05 26.38969 05 58 03.07 -06 52 50.0           9.7 N      426
        CJ98J010  C1998 05 28.37266 06 09 19.57 -10 09 10.1           9.8 N      426
        CJ98J010  C1998 05 28.37669 06 09 20.85 -10 09 32.6          12.0 N      422
        CJ98J010  C1998 05 28.37745 06 09 21.12 -10 09 37.3          12.1 N      422
        CJ98J010  C1998 05 28.37822 06 09 21.36 -10 09 41.6          12.0 N      422
        CJ98J010  C1998 05 28.37898 06 09 21.60 -10 09 45.6          11.9 N      422
        CJ98J010  C1998 05 28.38163 06 09 22.54 -10 10 01.4           9.9 N      426
        CJ98J010  C1998 05 28.38909 06 09 25.03 -10 10 44.0           9.7 N      426
        CJ98J010  C1998 05 28.39800 06 09 27.95 -10 11 34.4           9.8 N      426
        CJ98J010  C1998 05 28.89796 06 12 12.78 -10 58 40.0           7.7 T      860
        CJ98J010  C1998 05 28.90111 06 12 13.90 -10 58 57.7           7.8 T      860
        CJ98J010  C1998 05 28.90602 06 12 15.45 -10 59 25.8           7.1 T      860
        CJ98J010  C1998 05 28.91065 06 12 17.02 -10 59 50.4           7.0 T      860
        CJ98J010  C1998 05 28.91130 06 12 17.02 -10 59 50.0                      834
        CJ98J010  C1998 05 28.91414 06 12 18.16 -11 00 10.8           8.0 T      860
        CJ98J010  C1998 05 28.92203 06 12 20.77 -11 00 55.6           8.0 T      860
        CJ98J010  C1998 05 28.93575 06 12 25.07 -11 02 05.5                      834
        CJ98J010  C1998 05 29.37592 06 14 48.11 -11 42 41.8          11.3 N      422
        CJ98J010  C1998 05 29.37664 06 14 48.36 -11 42 45.8          11.4 N      422
        CJ98J010  C1998 05 29.37736 06 14 48.64 -11 42 49.5          11.3 N      422
        CJ98J010  C1998 05 29.37807 06 14 48.81 -11 42 53.9          11.3 N      422
        CJ98J010  C1998 05 30.36816 06 20 05.04 -13 11 28.3          12.5 N      422
        CJ98J010  C1998 05 30.36903 06 20 05.34 -13 11 32.9          12.7 N      422
        CJ98J010  C1998 05 30.36991 06 20 05.60 -13 11 37.4          12.7 N      422
        CJ98J010  C1998 05 30.37079 06 20 05.89 -13 11 42.1          12.6 N      422
        CJ98J010  C1998 05 30.37564 06 20 07.41 -13 12 07.6                      422
        CJ98J010  C1998 05 30.37644 06 20 07.67 -13 12 11.8                      422
        CJ98J010  C1998 05 31.35430 06 25 12.48 -14 36 08.4          11.9 N      422
        CJ98J010  C1998 05 31.35506 06 25 12.73 -14 36 12.1          12.1 N      422
        CJ98J010  C1998 05 31.35583 06 25 12.95 -14 36 15.9          12.1 N      422
        CJ98J010  C1998 05 31.35659 06 25 13.20 -14 36 19.9          12.1 N      422
        CJ98J010  C1998 05 31.36009 06 25 14.26 -14 36 37.4          12.0 N      422
        CJ98J010  C1998 05 31.37188 06 25 17.92 -14 37 37.2           9.7 N      426
        CJ98J010  C1998 05 31.38256 06 25 21.20 -14 38 31.1          10.0 N      426
        CJ98J010  C1998 05 31.39244 06 25 24.23 -14 39 20.3          10.0 N      426
        CJ98J010  C1998 06 01.35746 06 30 18.06 -15 58 42.8          10.8 N      422
        CJ98J010  C1998 06 01.35823 06 30 18.30 -15 58 46.7          10.9 N      422
        CJ98J010  C1998 06 01.35898 06 30 18.52 -15 58 50.5          10.9 N      422
        CJ98J010  C1998 06 01.35973 06 30 18.76 -15 58 54.0          10.9 N      422
        CJ98J010  C1998 06 01.36049 06 30 18.98 -15 58 57.8          11.0 N      422
    
    Observer details:
    415 Kambah, near Canberra.  Observer D. Herald.
    422 Loomberah.  Observer G. J. Garradd.  0.25-m f/4.1 reflector + CCD.
    426 Woomera.  Observer F. B. Zoltowski.  0.30-m f/3.3 Schmidt-Cassegrain + CCD.
    834 Buenos Aires-AAAA.  Observers R. Caprio, R. Mackintosh.  Measurers
        R. Mackintosh, J. R. Carozza.  0.25-m f/6.3 reflector + CCD.
    860 Valinhos.  Observer P. R. Holvorcem.  0.20-m f/3.3 reflector + CCD.
    
    Orbital elements:
        C/1998 J1 (SOHO)
    T 1998 May 8.6168 TT                                    Marsden
    q   0.153218             (2000.0)            P               Q
                       Peri.  110.5431      -0.2854320      -0.9496676
                       Node   351.6653      +0.1018610      +0.1038537
    e   1.0            Incl.   62.9286      +0.9529706      -0.2955434
    From 120 observations 1998 May 20-June 1.
    
    Ephemeris:
        C/1998 J1 (SOHO)
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
    1998 06 01    06 28.50   -15 29.7    0.933    0.775    46.7    72.1   6.7
    1998 06 02    06 33.51   -16 49.8    0.947    0.800    48.0    70.4   6.9
    1998 06 03    06 38.40   -18 06.5    0.961    0.824    49.2    68.8   7.1
    1998 06 04    06 43.20   -19 20.1    0.975    0.848    50.4    67.2   7.2
    1998 06 05    06 47.90   -20 30.6    0.990    0.872    51.6    65.7   7.4
    1998 06 06    06 52.50   -21 38.1    1.005    0.895    52.6    64.2   7.5
    1998 06 07    06 57.03   -22 42.8    1.021    0.919    53.7    62.8   7.7
    1998 06 08    07 01.47   -23 44.9    1.037    0.942    54.6    61.5   7.8
    1998 06 09    07 05.83   -24 44.5    1.053    0.965    55.6    60.2   8.0
    1998 06 10    07 10.12   -25 41.6    1.070    0.987    56.5    59.0   8.1
    1998 06 11    07 14.34   -26 36.5    1.086    1.010    57.3    57.8   8.2
    1998 06 12    07 18.50   -27 29.2    1.104    1.032    58.1    56.7   8.4
    1998 06 13    07 22.59   -28 19.9    1.121    1.054    58.9    55.6   8.5
    1998 06 14    07 26.62   -29 08.7    1.139    1.076    59.6    54.5   8.6
    1998 06 15    07 30.60   -29 55.6    1.156    1.097    60.3    53.5   8.7
    1998 06 16    07 34.52   -30 40.8    1.174    1.119    60.9    52.5   8.8
    1998 06 17    07 38.39   -31 24.3    1.192    1.140    61.6    51.6   9.0
    1998 06 18    07 42.21   -32 06.3    1.211    1.161    62.1    50.7   9.1
    1998 06 19    07 45.98   -32 46.8    1.229    1.182    62.7    49.8   9.2
    1998 06 20    07 49.71   -33 25.9    1.247    1.203    63.2    49.0   9.3
    1998 06 21    07 53.39   -34 03.8    1.266    1.224    63.7    48.1   9.4
    1998 06 22    07 57.02   -34 40.3    1.285    1.244    64.2    47.4   9.5
    1998 06 23    08 00.62   -35 15.7    1.304    1.264    64.7    46.6   9.6
    1998 06 24    08 04.18   -35 50.0    1.323    1.285    65.1    45.9   9.7
    1998 06 25    08 07.70   -36 23.2    1.342    1.305    65.5    45.2   9.8
    1998 06 26    08 11.19   -36 55.4    1.361    1.325    65.9    44.5   9.9
    1998 06 27    08 14.64   -37 26.7    1.380    1.344    66.2    43.8  10.0
    1998 06 28    08 18.05   -37 57.1    1.399    1.364    66.6    43.1  10.1
    1998 06 29    08 21.44   -38 26.6    1.418    1.384    66.9    42.5  10.2
    1998 06 30    08 24.79   -38 55.3    1.438    1.403    67.2    41.9  10.3
    1998 07 01    08 28.11   -39 23.2    1.457    1.422    67.5    41.3  10.3
    1998 07 02    08 31.40   -39 50.4    1.477    1.442    67.8    40.8  10.4
    1998 07 03    08 34.66   -40 16.9    1.496    1.461    68.0    40.2  10.5
    1998 07 04    08 37.90   -40 42.8    1.516    1.480    68.3    39.7  10.6
    1998 07 05    08 41.11   -41 08.0    1.536    1.499    68.5    39.1  10.7
    1998 07 06    08 44.29   -41 32.6    1.555    1.517    68.7    38.6  10.8
    1998 07 07    08 47.45   -41 56.6    1.575    1.536    68.9    38.1  10.9
    1998 07 08    08 50.58   -42 20.1    1.595    1.555    69.0    37.6  10.9
    1998 07 09    08 53.69   -42 43.0    1.615    1.573    69.2    37.2  11.0
    1998 07 10    08 56.78   -43 05.5    1.634    1.591    69.3    36.7  11.1
    1998 07 11    08 59.85   -43 27.5    1.654    1.610    69.5    36.3  11.2
    1998 07 12    09 02.89   -43 49.0    1.674    1.628    69.6    35.8  11.2
    1998 07 13    09 05.92   -44 10.1    1.694    1.646    69.7    35.4  11.3
    1998 07 14    09 08.92   -44 30.8    1.714    1.664    69.8    35.0  11.4
    1998 07 15    09 11.91   -44 51.1    1.734    1.682    69.9    34.6  11.5
    1998 07 16    09 14.88   -45 11.1    1.754    1.700    70.0    34.2  11.5
    
    Brian G. Marsden             (C) Copyright 1998 MPC           M.P.E.C. 1998-L07
    

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