IAU Minor Planet Center

MPEC 1999-M30: 1999 DG8

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M.P.E.C. 1999-M30                                Issued 1999 June 25, 19:07 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  ISSN 1523-6714

                                   1999 DG8

Observations:
     J99D08G*6C1999 02 16.27396 09 31 48.87 +17 30 24.1          25.5 R      568
     J99D08G 6C1999 02 16.31992 09 31 48.69 +17 30 24.5          25.7 R      568
     J99D08G 6C1999 02 17.27226 09 31 45.19 +17 30 36.4                      568
     J99D08G 6C1999 02 17.31258 09 31 45.04 +17 30 37.1                      568

Observer details:
568 Mauna Kea.  Observers B. Gladman, J. J. Kavelaars, A. Morbidelli,
    M. Holman.  Measurers B. Gladman, J.-M. Petit.  3.6-m Canada-France-Hawaii
    Telescope + CCD.

Orbital elements:
1999 DG8
Eccentricity assumed
Epoch 1999 Feb. 11.0 TT = JDT 2451220.5                 Marsden
M  33.55125              (2000.0)            P               Q
n   0.00132214     Peri.   72.74711     +0.67745310     -0.62541854
a  82.2151900      Node   322.95888     +0.12770269     +0.61837944
e   0.5984718      Incl.   39.99668     +0.72439584     +0.47587657
P 745              H    8.1           G   0.15
From 4 observations 1999 Feb. 16-17.

Ephemeris:
1999 DG8                 a,e,i = 82.22, 0.60, 40                 q = 33.012
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
1999 06 21    09 29.83   +17 25.7   61.860   61.212    50.0     0.7    26.1
1999 07 01    09 30.30   +17 22.4   61.994   61.226    40.6     0.6    26.1
1999 07 11    09 30.84   +17 18.8   62.107   61.240    31.3     0.5    26.1

     The assumed orbit above has roughly the size and shape of that of
1996 TL66.  It indeed seems likely that this is another "scattered-disk"
object.  Even if the assumption is incorrect, it is clear that 1999 DG8
was being observed at a distance that is substantially greater than that
at which any other solar-system object has been observed.

Brian G. Marsden             (C) Copyright 1999 MPC           M.P.E.C. 1999-M30

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