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IAU Minor Planet Center

Minor Planet Center

MPEC 2001-U53: 2001 US16

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M.P.E.C. 2001-U53                                Issued 2001 Oct. 26, 20:55 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 US16

Observations:
     K01U16S* C2001 10 23.42637 02 25 45.81 +11 24 44.8          22.0 V      691
     K01U16S  C2001 10 23.44825 02 25 43.39 +11 24 30.5          21.1 V      691
     K01U16S  C2001 10 23.47007 02 25 40.89 +11 24 15.7          21.1 V      691
     K01U16S  C2001 10 24.22621 02 24 17.44 +11 15 52.2          21.8 V      291
     K01U16S  C2001 10 24.23893 02 24 15.97 +11 15 44.1          21.4 V      291
     K01U16S  C2001 10 24.24686 02 24 15.03 +11 15 38.0          21.4 V      291
     K01U16S  C2001 10 24.30807 02 24 07.89 +11 14 57.5          20.9 V      691
     K01U16S  C2001 10 24.31269 02 24 07.36 +11 14 54.3          20.7 V      691
     K01U16S  C2001 10 24.31719 02 24 06.84 +11 14 51.4          21.1 V      691
     K01U16S HC2001 10 25.29819 02 22 17.28 +11 03 57.4          21.8 V      291
     K01U16S HC2001 10 25.30876 02 22 15.98 +11 03 51.0          22.1 V      291
     K01U16S  C2001 10 26.21664 02 20 34.97 +10 53 47.9          21.7 V      291
     K01U16S  C2001 10 26.22054 02 20 34.53 +10 53 45.3          20.9 V      291
     K01U16S  C2001 10 26.22529 02 20 33.94 +10 53 42.4          21.5 V      291
     K01U16S  C2001 10 26.31362 02 20 23.51 +10 52 44.7          19.3 R      711
     K01U16S  C2001 10 26.32368 02 20 22.41 +10 52 39.0          20.1 R      711
     K01U16S  C2001 10 26.33367 02 20 21.29 +10 52 29.2          20.0 R      711

Observer details:
291 LPL/Spacewatch II.  Observers R. S. McMillan, A. S. Descour, T. H. Bressi.
    1.8-m Spacewatch telescope.
691 Steward Observatory, Kitt Peak.  Observer  A. F. Tubbiolo.  0.9-m
    Spacewatch telescope.
711 McDonald Observatory.  Observer P. J. Shelus.  0.76-m reflector + CCD.

Orbital elements:
2001 US16                                                            PHA 0.031
Epoch 2001 Oct. 18.0 TT = JDT 2452200.5                 Spahr
M 130.04678              (2000.0)            P               Q
n   0.62411243     Peri.   65.10071     -0.45793051     +0.88898691
a   1.3561076      Node   177.64428     -0.82730158     -0.42558442
e   0.2511756      Incl.    1.93024     -0.32537939     -0.16905670
P   1.58           H   20.7           G   0.15
From 17 observations 2001 Oct. 23-26.

Ephemeris:
2001 US16                a,e,i = 1.36, 0.25, 2                   q = 1.0159
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2001 10 18    02 35.71   +12 24.5    0.633    1.614   164.0     9.8    21.4
2001 10 28    02 17.27   +10 34.3    0.640    1.633   176.9     1.9    21.0
2001 11 07    01 59.83   +08 51.9    0.671    1.650   166.0     8.4    21.5
2001 11 17    01 46.02   +07 33.5    0.723    1.664   152.5    15.9    22.0

Timothy B. Spahr             (C) Copyright 2001 MPC           M.P.E.C. 2001-U53

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