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IAUC 7852: C/2002 E2; C/2002 C1

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                                                  Circular No. 7852
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET C/2002 E2 (SNYDER-MURAKAMI)
     Additional astrometry and the following preliminary parabolic
orbital elements appear on MPEC 2002-E43:

     T = 2002 Feb. 22.890 TT          Peri. =   9.933
                                      Node  = 244.743   2000.0
     q = 1.47019 AU                   Incl. =  92.840

2002 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Mar.  7    18 49.96   - 5 06.4   1.605   1.480   64.5   37.2   10.2
      9    18 52.29   - 3 16.1   1.580   1.484   65.9   37.7   10.2
     11    18 54.57   - 1 22.1   1.555   1.488   67.3   38.0   10.2
     13    18 56.80   + 0 35.6   1.531   1.492   68.7   38.4   10.2
     15    18 58.99   + 2 37.1   1.509   1.498   70.1   38.6   10.1
     17    19 01.12   + 4 42.2   1.487   1.503   71.4   38.9   10.1
     19    19 03.19   + 6 51.0   1.467   1.509   72.8   39.0   10.1
     21    19 05.21   + 9 03.2   1.449   1.516   74.1   39.2   10.1
     23    19 07.18   +11 18.8   1.432   1.523   75.3   39.3   10.1
     25    19 09.08   +13 37.4   1.417   1.531   76.5   39.3   10.1
     27    19 10.92   +15 58.9   1.403   1.539   77.7   39.3   10.1

     K. Hornoch, Lelekovice, Czech Republic, reports visual m_1 =
10.1 and coma diameter 3'.1 on Mar. 13.12 UT (0.13-m reflector).


COMET C/2002 C1 (IKEYA-ZHANG)
     Ephemeris from orbital elements on MPEC 2002-E22:

2002 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
Mar.  7     1 13.10   + 5 40.8   1.053   0.581   32.9   67.8    4.8
      9     1 16.57   + 7 44.1   1.015   0.560   32.4   71.7    4.5
     11     1 19.70   + 9 53.4   0.975   0.542   31.9   75.9    4.3
     13     1 22.41   +12 08.5   0.936   0.527   31.5   80.3    4.1
     15     1 24.56   +14 29.2   0.896   0.516   31.1   85.0    3.9
     17     1 26.05   +16 55.2   0.856   0.509   30.8   89.8    3.7
     19     1 26.77   +19 25.9   0.817   0.507   30.5   94.6    3.6
     21     1 26.59   +22 00.5   0.779   0.509   30.3   99.1    3.5
     23     1 25.43   +24 38.3   0.742   0.516   30.3  103.2    3.5
     25     1 23.20   +27 18.5   0.707   0.527   30.4  106.9    3.5
     27     1 19.83   +30 00.3   0.674   0.542   30.7  109.8    3.5

                      (C) Copyright 2002 CBAT
2002 March 13                  (7852)            Daniel W. E. Green

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