• MPC Preparation (Info)

    • MPEC 2004-S41 : 2004 SB20

    The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.

    A form allowing access to any MPEC is at the bottom of this page.

    Read MPEC 2004-S40 Read MPEC 2004-S42 

    M.P.E.C. 2004-S41                                Issued 2004 Sept. 22, 16:51 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.

                  Supported in part by the Brinson Foundation
             Prepared using the Tamkin Foundation Computer Network

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

                                   2004 SB20

Observations:
     K04S20B* C2004 09 21.40602 03 32 33.93 -16 19 13.1          18.9   ES041704
     K04S20B  C2004 09 21.41816 03 32 31.06 -16 19 02.5          19.2   ES041704
     K04S20B  C2004 09 21.44267 03 32 25.32 -16 18 41.2          19.5   ES041704
     K04S20B  C2004 09 21.45455 03 32 22.55 -16 18 31.5          19.5   ES041704
     K04S20B  C2004 09 22.32220 03 29 04.14 -16 05 51.8          18.1 R ES041H06
     K04S20B  C2004 09 22.32587 03 29 03.31 -16 05 47.7          18.0 R ES041H06
     K04S20B  C2004 09 22.32958 03 29 02.45 -16 05 45.7          18.2 R ES041H06
     K04S20B  C2004 09 22.34992 03 28 57.64 -16 05 26.4          18.7 R ES041651
     K04S20B  C2004 09 22.35134 03 28 57.29 -16 05 25.4          18.7 R ES041651
     K04S20B  C2004 09 22.35278 03 28 56.92 -16 05 24.1          18.8 R ES041651
     K04S20B  C2004 09 22.44090 03 28 35.32 -16 04 07.6                 ES041H36
     K04S20B  C2004 09 22.44856 03 28 33.89 -16 04 01.3                 ES041H36
     K04S20B  C2004 09 22.45626 03 28 31.87 -16 03 54.3          18.9 R ES041H36
     K04S20B 8C2004 09 22.48438 03 28 25.47 -16 03 27.4          18.0 R ES041673
     K04S20B 8C2004 09 22.48611 03 28 25.09 -16 03 26.4                 ES041673
     K04S20B 8C2004 09 22.50069 03 28 21.61 -16 03 12.9                 ES041673
     K04S20B 8C2004 09 22.50226 03 28 21.19 -16 03 11.6                 ES041673
     K04S20B  C2004 09 22.51198 03 28 18.73 -16 03 01.8          18.1 R ES041G90
     K04S20B  C2004 09 22.51509 03 28 18.03 -16 02 59.0          18.5 R ES041G90
     K04S20B  C2004 09 22.51820 03 28 17.23 -16 02 56.3          18.2 R ES041G90

Observer details:
651 Grasslands Observatory, Tucson.  Observer J. E. McGaha.  0.62-m f/5.1
    Newtonian reflector + CCD.
673 Table Mountain Observatory, Wrightwood.  Observer D. Mayes.  0.6-m
    reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, R. Huber, L. Manguso, D. Torres, R. Kracke, M. McCleary,
    H. Stange, A. Milner.  Measurers J. Stuart, R. Sayer, J. Evans, J. Kommers.
    1.0-m f/2.15 reflector + CCD.
G90 Three Buttes Observatory, Tucson.  Observer G. R. Jones.  0.40-m
    Ritchey-Chretien + CCD.
H06 New Mexico Skies Observatory.  Observer R. Hutsebaut.  0.25-m reflector
    + CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.3-m Schmidt-Cassegrain
    + CCD.

Orbital elements:
2004 SB20
Epoch 2004 Sept. 12.0 TT = JDT 2453260.5                MPC
M  74.05439              (2000.0)            P               Q
n   0.76335267     Peri.  209.94860     -0.50803564     +0.82381942
a   1.1857302      Node    31.62819     -0.66391852     -0.18856456
e   0.4118750      Incl.   28.65106     -0.54873671     -0.53456990
P   1.29           H   18.4           G   0.15
From 20 observations 2004 Sept. 21-22.

Ephemeris:
2004 SB20                a,e,i = 1.19, 0.41, 29                  q = 0.6974
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2004 09 22    03 30.30   -16 10.4    0.441    1.308   125.2    38.8    18.8
2004 10 02    02 47.28   -13 08.7    0.424    1.363   142.8    26.4    18.4
2004 10 12    01 59.60   -08 59.5    0.435    1.414   159.4    14.4    18.2
2004 10 22    01 16.41   -04 20.7    0.479    1.460   162.8    11.7    18.3
2004 11 01    00 44.15   -00 01.7    0.554    1.501   151.0    18.7    19.0
2004 11 11    00 23.63   +03 36.2    0.653    1.538   138.0    25.5    19.6
2004 11 21    00 12.86   +06 37.7    0.768    1.571   126.5    30.4    20.1
2004 12 01    00 09.37   +09 14.2    0.893    1.599   116.5    33.5    20.6
2004 12 11    00 11.17   +11 34.9    1.024    1.622   107.7    35.3    21.0
2004 12 21    00 16.89   +13 47.0    1.157    1.641    99.8    36.2    21.3
2004 12 31    00 25.55   +15 54.7    1.289    1.656    92.6    36.4    21.5
2005 01 10    00 36.53   +18 00.4    1.418    1.666    85.9    36.1    21.7
2005 01 20    00 49.43   +20 05.5    1.541    1.672    79.6    35.4    21.9
2005 01 30    01 03.95   +22 10.6    1.657    1.674    73.7    34.4    22.0

Kyle E. Smalley              (C) Copyright 2004 MPC           M.P.E.C. 2004-S41

    Read MPEC 2004-S40 Read MPEC 2004-S42

    MPEC number:

    Enter an MPEC number in one of the following forms:

    • 1997-B01 (the full form)
    • J97B01 (the packed version of the full form)
    • B01 (the abbreviated form)