[IAUC] IAUC 8820: C/2007 E2 [25139-2007/05-R1]

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                                                  Circular No. 8820
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT en CFA.HARVARD.EDU (science)
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Phone 617-495-7440/7244/7444 (for emergency use only)


COMET C/2007 E2 (LOVEJOY)
     Further to IAUC 8819, numerous precise CCD positions have now
been reported, and they appear together with the following
preliminary parabolic orbital elements on MPEC 2007-F32.

     T = 2007 Mar. 27.565 TT          Peri. = 340.609
                                      Node  = 232.436   2000.0
     q = 1.09294 AU                   Incl. =  95.894

     The following ephemeris magnitudes are based on H_10 = 8.5.

2007 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Mar. 11    20 49.29   -53 30.8   1.258   1.126   58.6   48.8    9.5
     13    20 47.17   -52 35.4   1.218   1.119   59.8   50.1    9.4
     15    20 44.93   -51 36.5   1.176   1.112   61.0   51.4    9.3
     17    20 42.55   -50 33.7   1.134   1.107   62.2   52.7    9.2
     19    20 40.02   -49 26.4   1.092   1.102   63.5   54.0    9.1
     21    20 37.34   -48 13.9   1.048   1.098   64.9   55.2    9.0
     23    20 34.48   -46 55.3   1.004   1.096   66.4   56.5    8.9
     25    20 31.43   -45 29.6   0.960   1.094   67.9   57.6    8.8
     27    20 28.17   -43 55.7   0.915   1.093   69.5   58.8    8.7
     29    20 24.69   -42 12.3   0.871   1.093   71.2   59.8    8.6
     31    20 20.96   -40 17.7   0.826   1.094   73.0   60.8    8.5
Apr.  2    20 16.95   -38 10.1   0.782   1.097   74.9   61.6    8.4
      4    20 12.63   -35 47.1   0.739   1.100   76.8   62.3    8.3
      6    20 07.98   -33 06.2   0.696   1.104   78.9   62.8    8.1
      8    20 02.94   -30 04.2   0.655   1.109   81.2   63.1    8.0
     10    19 57.47   -26 37.9   0.615   1.115   83.5   63.2    7.9
     12    19 51.53   -22 43.5   0.578   1.122   86.1   63.0    7.8
     14    19 45.04   -18 17.5   0.543   1.130   88.7   62.6    7.7
     16    19 37.95   -13 17.0   0.513   1.138   91.5   61.8    7.6

     Visual total-magnitude and coma-diameter estimates: Mar. 16.70
UT, 9.1, 4' (D. A. J. Seargent, Cowra, N.S.W., 25x100 binoculars);
17.85, 9.6, 3'.0 (A. Pearce, Nedlands, W. Australia, 0.41-m
reflector); 18.64, 9.3, 2'.7 (S. Rae, Hamilton, New Zealand, 0.25-m
reflector).

                      (C) Copyright 2007 CBAT
2007 March 18                  (8820)            Daniel W. E. Green