• Processing (Info)

    • MPEC 1998-X06 : 1998 US43

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    M.P.E.C. 1998-X06                                Issued 1998 Dec. 3, 17:39 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

                                   1998 US43

Observations:
     J98U43S* C1998 10 22.40628 03 08 48.43 +16 39 15.3          22.8 R      695
     J98U43S  C1998 10 22.49369 03 08 47.93 +16 39 12.7                      695
     J98U43S  C1998 11 18.13535 03 06 18.37 +16 27 28.1          22.6 R      695
     J98U43S  C1998 11 18.20454 03 06 18.00 +16 27 26.2                      695

Observer details:
695 Kitt Peak. Observers R. L. Millis, M. W. Buie, R. M. Wagner, J. L. Elliot.
    Measurers M. W. Buie, R. L. Millis.  4.0-m reflector + CCD.

Orbital elements:
1998 US43
The following assumed perihelic 2:3 Neptune-resonance orbital elements
keep the object more than 12 AU from Neptune over a 14 000-year period
Epoch 1998 Nov. 3.0 TT = JDT 2451120.5                  Marsden
M 359.04312              (2000.0)            P               Q
n   0.00396542     Peri.  186.38779     +0.64198041     -0.75635968
a  39.5314890      Node   223.76812     +0.71124551     +0.64867216
e   0.1094837      Incl.   10.46322     +0.28634068     +0.08452496
P 249              H    7.6           G   0.15
From 4 observations 1998 Oct. 22-Nov. 18.

Ephemeris:
1998 US43                a,e,i = 39.53, 0.11, 10                 q = 35.203
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1998 12 03    03 04.95   +16 21.2   34.290   35.204   157.8     0.6    23.1
1998 12 13    03 04.12   +16 17.3   34.370   35.204   147.4     0.9    23.2
1998 12 23    03 03.42   +16 14.0   34.477   35.204   137.1     1.1    23.2
1999 01 02    03 02.85   +16 11.3   34.607   35.204   126.7     1.3    23.2
1999 01 12    03 02.45   +16 09.3   34.755   35.204   116.4     1.4    23.2
1999 01 22    03 02.23   +16 08.2   34.917   35.204   106.2     1.5    23.2
1999 02 01    03 02.20   +16 07.8   35.087   35.204    96.0     1.6    23.3
1999 02 11    03 02.37   +16 08.3   35.260   35.204    85.9     1.6    23.3
1999 02 21    03 02.74   +16 09.5   35.431   35.204    75.9     1.6    23.3
1999 03 03    03 03.29   +16 11.6   35.595   35.204    66.0     1.5    23.3
1999 03 13    03 04.01   +16 14.3   35.747   35.204    56.2     1.3    23.3
1999 03 23    03 04.88   +16 17.6   35.883   35.204    46.5     1.2    23.3
1999 04 02    03 05.89   +16 21.4   35.998   35.204    36.8     1.0    23.3

Brian G. Marsden             (C) Copyright 1998 MPC           M.P.E.C. 1998-X06

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