MPEC 1999-B19 : COMET P/1998 X1 (ODAS)

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M.P.E.C. 1999-B19                                Issued 1999 Jan. 26, 21:45 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 P/1998 X1 (ODAS)

Observations:
    PJ98X010  C1998 12 22.06927 10 00 36.55 +13 47 32.2          18.9 T      958
    PJ98X010  C1998 12 22.11624 10 00 36.71 +13 47 30.6          18.9 T      958
    PJ98X010  C1998 12 22.20620 10 00 37.25 +13 47 27.7          19.0 T      958
    PJ98X010  C1998 12 26.14892 10 00 48.92 +13 46 55.5          19.0 T      910
    PJ98X010  C1999 01 14.99273 09 54 37.89 +14 19 39.4          19.2 T      910
    PJ98X010  C1999 01 14.99550 09 54 37.79 +14 19 39.4                      910
    PJ98X010  C1999 01 14.99812 09 54 37.60 +14 19 39.5                      910
    PJ98X010  C1999 01 15.00074 09 54 37.54 +14 19 40.0                      910
    PJ98X010  C1999 01 15.00336 09 54 37.48 +14 19 40.6                      910
    PJ98X010  C1999 01 15.00597 09 54 37.39 +14 19 40.5                      910
    PJ98X010  C1999 01 15.00859 09 54 37.24 +14 19 40.8                      910
    PJ98X010  C1999 01 15.01120 09 54 37.16 +14 19 41.4                      910
    PJ98X010  C1999 01 15.01232 09 54 37.09 +14 19 42.4                      910
    PJ98X010  C1999 01 15.01644 09 54 36.94 +14 19 42.6                      910
    PJ98X010  C1999 01 19.94777 09 51 25.53 +14 35 27.2          19.2 T      910
    PJ98X010  C1999 01 19.95054 09 51 25.42 +14 35 27.6                      910
    PJ98X010  C1999 01 19.95316 09 51 25.31 +14 35 27.9                      910
    PJ98X010  C1999 01 19.95577 09 51 25.14 +14 35 28.5                      910
    PJ98X010  C1999 01 19.95839 09 51 25.06 +14 35 29.2                      910
    PJ98X010  C1999 01 19.96101 09 51 24.94 +14 35 29.8                      910
    PJ98X010  C1999 01 19.96362 09 51 24.82 +14 35 30.2                      910
    PJ98X010  C1999 01 19.96624 09 51 24.72 +14 35 30.9                      910
    PJ98X010  C1999 01 19.96885 09 51 24.61 +14 35 31.2                      910
    PJ98X010  C1999 01 19.97147 09 51 24.48 +14 35 32.3                      910
    PJ98X010  C1999 01 21.75712 09 50 07.25 +14 41 44.3          18.5 T      360
    PJ98X010  C1999 01 21.76146 09 50 07.04 +14 41 45.6                      360
    PJ98X010  C1999 01 21.76597 09 50 06.81 +14 41 46.4                      360

Observer details:
360 Kuma Kogen.  Observer A. Nakamura.  0.60-m f/6.0 Ritchey-Chretien + CCD.
910 Caussols-ODAS.  Observers A. Maury, D. Albanese, G. Hahn, M. Hoffmann.
    Measurers A. Maury, G. Hahn.  0.9-m Schmidt + CCD.
958 Observatoire de Dax.  Observer P. Dupouy.  0.20-m f/8 reflector + CCD.

Orbital elements:
    P/1998 X1 (ODAS)
T 1998 July 20.7496 TT                                  Nakano
q   1.975960             (2000.0)            P               Q
n   0.1462716      Peri.   68.8525      +0.3801732      -0.9249152
a   3.567490       Node   358.8027      +0.8395926      +0.3453263
e   0.446120       Incl.    1.3530      +0.3880110      +0.1590021
P   6.74
From 97 observations 1998 Dec. 15-1999 Jan. 21.

Ephemeris:
    P/1998 X1 (ODAS)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
1999 01 22    09 49.94   +14 42.6    1.512    2.447   156.8     9.1  17.3
1999 02 01    09 41.82   +15 20.4    1.515    2.489   169.0     4.3  17.4
1999 02 11    09 33.00   +15 58.6    1.546    2.533   178.0     0.8  17.5
1999 02 21    09 24.68   +16 31.7    1.605    2.576   166.4     5.2  17.6
1999 03 03    09 17.93   +16 55.5    1.690    2.621   154.7     9.3  17.8
1999 03 13    09 13.40   +17 08.2    1.799    2.665   143.6    12.8  18.0
1999 03 23    09 11.40   +17 09.6    1.929    2.710   133.2    15.6  18.3
1999 04 02    09 11.94   +17 00.2    2.075    2.755   123.5    17.6  18.5
1999 04 12    09 14.79   +16 41.1    2.234    2.801   114.4    19.0  18.7
1999 04 22    09 19.67   +16 13.1    2.403    2.846   105.8    19.9  18.9
1999 05 02    09 26.24   +15 37.3    2.577    2.891    97.8    20.2  19.2
1999 05 12    09 34.18   +14 54.5    2.755    2.937    90.1    20.1  19.4
1999 05 22    09 43.23   +14 05.3    2.934    2.982    82.8    19.7  19.6
1999 06 01    09 53.15   +13 10.5    3.111    3.027    75.8    18.9  19.8
1999 06 11    10 03.73   +12 10.7    3.286    3.072    69.0    18.0  20.0
1999 06 21    10 14.83   +11 06.4    3.455    3.117    62.4    16.8  20.1
1999 07 01    10 26.31   +09 58.3    3.617    3.161    55.9    15.4  20.3
1999 07 11    10 38.05   +08 46.8    3.771    3.205    49.5    14.0  20.4
1999 07 21    10 49.99   +07 32.6    3.915    3.249    43.2    12.4  20.6
1999 07 31    11 02.05   +06 16.3    4.048    3.293    36.9    10.7  20.7
1999 08 10    11 14.17   +04 58.3    4.169    3.336    30.6     8.9  20.8

Brian G. Marsden             (C) Copyright 1999 MPC           M.P.E.C. 1999-B19

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