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  • MPEC 2017-U188: 2017 US4

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    M.P.E.C. 2017-U188                               Issued 2017 Oct. 26, 17:37 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
        on behalf of Division F 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 https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                       2017 US4
    
    Observations:
         K17U04S* C2017 10 22.44753 01 34 26.583+08 30 55.29         21.8 wLEU188F51
         K17U04S  C2017 10 22.45920 01 34 25.457+08 30 39.64         21.7 wLEU188F51
         K17U04S  C2017 10 22.47080 01 34 24.352+08 30 24.37         21.9 wLEU188F51
         K17U04S  C2017 10 22.48248 01 34 23.234+08 30 08.79         22.2 wLEU188F51
         K17U04S KC2017 10 23.35834 01 33 04.08 +08 10 44.6          21.8 RoEU188291
         K17U04S KC2017 10 23.36433 01 33 03.51 +08 10 36.4          21.5 RoEU188291
         K17U04S KC2017 10 23.37032 01 33 02.91 +08 10 28.4          21.4 RoEU188291
         K17U04S  C2017 10 25.27093401 30 12.45 +07 28 25.7          21.5 GUEU188H01
         K17U04S  C2017 10 25.27793901 30 11.78 +07 28 16.4          21.2 GUEU188H01
         K17U04S  C2017 10 25.28439901 30 11.17 +07 28 07.8          21.9 GUEU188H01
         K17U04S  C2017 10 25.29292301 30 10.36 +07 27 56.4          21.7 GUEU188H01
         K17U04S KC2017 10 26.22272001 28 47.57 +07 07 23.7          21.8 VuEU188H21
         K17U04S KC2017 10 26.22910001 28 47.00 +07 07 15.2          21.7 VuEU188H21
         K17U04S KC2017 10 26.23916501 28 46.06 +07 07 02.0          22.1 VuEU188H21
    
    Observer details:
    291 LPL/Spacewatch II.  Observer M. T. Read.  1.8-m f/2.7 reflector + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
        M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
        M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk.  1.8-m
        Ritchey-Chretien + CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 reflector + CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  1.3-m f/4.0
        astrograph + CCD.
    
    Orbital elements:
    2017 US4                                                 Earth MOID = 0.1324 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 215.19419              (2000.0)            P               Q
    n   0.59227729     Peri.  318.36589     -0.95309773     -0.29429483
    a   1.4042766      Node   204.78752     +0.30252620     -0.91931604
    e   0.2162623      Incl.    9.70518     +0.00908938     -0.26124428
    P   1.66           H   21.6           G   0.15           U   8
    Residuals in seconds of arc
    171022 F51  0.0   0.0     171023 291  0.1+  0.0     171025 H01  0.0   0.1-
    171022 F51  0.1-  0.1-    171023 291  0.4-  0.1-    171026 H21  0.3-  0.0
    171022 F51  0.1+  0.0     171025 H01  0.1+  0.1+    171026 H21  0.1+  0.1-
    171022 F51  0.1+  0.0     171025 H01  0.0   0.1+    171026 H21  0.1+  0.0
    171023 291  0.1+  0.2+    171025 H01  0.0   0.0
    
    Ephemeris:
    2017 US4                 a,e,i = 1.40, 0.22, 10                  q = 1.1006
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 09 26    02 06 36.3 +16 31 37   0.6991  1.6362   147.5    19.2    22.9
    ...
    2017 10 11    01 51 03.1 +12 31 51   0.6188  1.6078   167.3     7.8    22.1
    ...
    2017 10 19    01 39 38.1 +09 46 32   0.5949  1.5910   178.8     0.8    21.6
    ...
    2017 10 25    01 30 36.8 +07 34 33   0.5866  1.5775   172.0     5.0    21.9
    2017 10 26    01 29 07.5 +07 12 27   0.5861  1.5752   170.6     5.9    21.9
    2017 10 27    01 27 39.0 +06 50 26   0.5857  1.5729   169.1     6.9    21.9
    ...
    2017 11 02    01 19 13.4 +04 41 41   0.5882  1.5586   160.3    12.4    22.2
    ...
    2017 11 10    01 09 47.3 +02 07 14   0.6026  1.5385   149.0    19.4    22.4
    ...
    2017 11 25    01 00 16.8 -01 17 56   0.6567  1.4982   130.3    30.2    22.9
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-U188
    

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