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    • MPEC 2001-S31 : 2001 SY169

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    M.P.E.C. 2001-S31                                Issued 2001 Sept. 25, 17:33 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

                                  2001 SY169

Observations:
     K01SG9Y* C2001 09 19.32328 01 02 11.31 +01 19 33.0          19.6        704
     K01SG9Y  C2001 09 19.33741 01 02 07.10 +01 18 48.0          19.8        704
     K01SG9Y  C2001 09 19.36569 01 01 58.52 +01 17 16.8          20.3        704
     K01SG9Y  C2001 09 19.37983 01 01 54.13 +01 16 32.3          20.9        704
     K01SG9Y  C2001 09 20.33144 00 57 35.68 +00 27 45.3          18.7 R      649
     K01SG9Y  C2001 09 20.33376 00 57 35.04 +00 27 38.2          19.5 R      649
     K01SG9Y  C2001 09 20.33609 00 57 34.44 +00 27 31.7          19.5 R      649
     K01SG9Y  C2001 09 24.34507 00 42 05.16 -02 23 31.4          20.0        704
     K01SG9Y  C2001 09 24.35968 00 42 01.97 -02 24 03.4          19.5        704
     K01SG9Y  C2001 09 24.37430 00 41 58.65 -02 24 37.1          19.8        704
     K01SG9Y  C2001 09 24.38892 00 41 55.52 -02 25 08.1          20.2        704

Observer details:
649 Powell Observatory, Louisburg.  Observers K. Smalley, R. Trentman, D. Young.
    0.75-m Newtonian + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, R. Huber, L. Manguso, S. Adams.  Measurers J. Stuart,
    R. Sayer, J. B. Evans, H. Viggh.  1.0-m f/2.15 reflector + CCD.

Orbital elements:
2001 SY169
Epoch 2001 Sept. 8.0 TT = JDT 2452160.5                 Spahr
M  53.06935              (2000.0)            P               Q
n   0.76201186     Peri.   82.41866     -0.27858183     +0.96033730
a   1.1871208      Node   171.37722     -0.90974676     -0.25985420
e   0.3698911      Incl.    4.59765     -0.30781974     -0.10113389
P   1.29           H   22.5           G   0.15
From 11 observations 2001 Sept. 19-24.

Ephemeris:
2001 SY169               a,e,i = 1.19, 0.37, 5                   q = 0.7480
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2001 09 18    01 08.68   +02 34.1    0.127    1.123   157.9    19.7    19.3
2001 09 28    00 31.07   -04 19.6    0.182    1.183   172.9     6.0    19.6
2001 10 08    00 11.43   -07 28.3    0.250    1.240   162.9    13.7    20.7
2001 10 18    00 02.26   -08 38.6    0.328    1.294   151.3    21.7    21.7
2001 10 28    00 00.14   -08 40.1    0.417    1.344   141.2    27.6    22.5

Timothy B. Spahr             (C) Copyright 2001 MPC           M.P.E.C. 2001-S31

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