MPEC 2002-G38 : COMET C/2002 C1 (IKEYA-ZHANG)

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M.P.E.C. 2002-G38                                Issued 2002 Apr. 10, 16:44 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.

             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                         COMET C/2002 C1 (IKEYA-ZHANG)

Observations:
    CK02C010  C2002 03 14.78052 01 24 20.97 +14 13 26.2           5.9 N      152
    CK02C010  C2002 03 14.78122 01 24 20.98 +14 13 29.6           6.3 N      152
    CK02C010  C2002 03 16.74557 01 25 53.88 +16 36 18.6           6.0 N      152
    CK02C010  C2002 03 16.75258 01 25 54.15 +16 36 46.8           6.4 N      152
    CK02C010  C2002 03 28.77644 01 15 49.41 +32 24 39.6                      235
    CK02C010  C2002 03 29.77542 01 13 08.47 +33 46 06.6           3.5 T      235
    CK02C010  C2002 03 30.77739 01 10 07.48 +35 07 48.7           3.5 T      235
    CK02C010  C2002 04 02.43003 01 00 29.22 +38 43 35.9           3.4 T      372
    CK02C010  C2002 04 02.78551 00 59 00.69 +39 12 25.9           4.0 T      235
    CK02C010  C2002 04 04.42507 00 51 32.63 +41 24 55.4           3.5 T      372
    CK02C010  C2002 04 05.15705 00 47 54.09 +42 23 40.8                      636
    CK02C010  C2002 04 05.15779 00 47 53.90 +42 23 45.0                      636
    CK02C010  C2002 04 05.15855 00 47 53.69 +42 23 49.4                      636
    CK02C010  C2002 04 05.80472 00 44 25.58 +43 15 30.4           7.3 N      232
    CK02C010  C2002 04 05.80880 00 44 24.32 +43 15 50.4           7.3 N      232
    CK02C010  C2002 04 05.81181 00 44 23.51 +43 16 06.0           8.2 N      213
    CK02C010  C2002 04 05.81416 00 44 22.70 +43 16 15.8           7.3 N      232

Observer details:
152 Moletai Astronomical Observatory.  Observers K. Cernis, J. Zdanavicius.
    0.35-m f/3.5 Maksutov + CCD.
213 Observatorio Montcabre.  Observer R. Naves N.  Measurer M. Campas.  0.25-m
    f/3.3 Schmidt-Cassegrain + CCD.
232 Masquefa Observatory.  Observer E. Reina L.  0.25-m f/6.3
    Schmidt-Cassegrain + CCD.
235 CAST Observatory, Talmassons.  Observers R. Ligustri, P. Beltrame,
    V. Savani.   0.35-m f/3.5 reflector + CCD.
372 Geisei.  Observer T. Seki.  0.60-m f/3.5 reflector.
636 Essen.  Observer T. Payer.  0.32-m f/5.7 reflector + CCD.

Orbital elements:
    C/2002 C1 (Ikeya-Zhang)
Epoch 2002 Mar. 27.0 TT = JDT 2452360.5
T 2002 Mar. 18.98074 TT                                 MPC
q   0.5070627            (2000.0)            P               Q
z  +0.0195280      Peri.   34.67204     -0.54914557     -0.69067932
 +/-0.0000045      Node    93.36616     +0.61956739     -0.71430644
e   0.9900981      Incl.   28.12171     +0.56087020     +0.11282020
From 605 observations 2002 Feb. 1-Apr. 5, mean residual 0".69.

     The above orbital elements yield the year of the previous perihelion
passage as T = 1660.2 +/- 0.1 (1 sigma).

Brian G. Marsden             (C) Copyright 2002 MPC           M.P.E.C. 2002-G38

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