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  • MPEC 2020-U153 : 2017 UH5

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    M.P.E.C. 2020-U153                             Issued 2020 October 21, 07:40 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 UH5                                 
    
    
                               Revision to MPEC 2017-U204                           
    
    Additional Observations:
         K17U05H  C2020 10 20.41433701 03 08.614-20 58 09.91               VEU153F52
         K17U05H  C2020 10 20.42542501 03 09.050-20 52 45.41         19.81GVEU153F52
         K17U05H  C2020 10 20.43625101 03 09.483-20 47 26.78         19.23GVEU153F52
         K17U05H  C2020 10 20.44708001 03 09.951-20 42 08.16         19.63GVEU153F52
         K17U05H  C2020 10 21.25717001 05 50.19 -14 00 52.1          19.41GVEU153G96
         K17U05H  C2020 10 21.26282701 05 50.47 -13 58 00.9          19.70GVEU153G96
         K17U05H  C2020 10 21.26847801 05 50.76 -13 55 10.2                VEU153G96
         K17U05H  C2020 10 21.27413201 05 50.97 -13 52 19.6          19.50GVEU153G96
    
    Observer details:
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
        Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y.
        Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer D. Rankin.  Measurers E. J. Christensen, G.
        A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
        Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
        Seaman, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector + 10K CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
    201020 F52   18+    7+    201021 G96   18+    8+    MPO421542   +0.49 days
    
    Orbital elements:
    2017 UH5                                                 Earth MOID = 0.0222 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
    M  45.71723              (2000.0)            P               Q
    n   0.65513715     Peri.  343.23388     +0.97002969     -0.22964809
    a   1.3129491      Node    30.39607     +0.23703909     +0.82248965
    e   0.2297544      Incl.    9.02830     +0.05343103     +0.52035809
    P   1.50           H   26.5           G   0.15           U   2
    Residuals in seconds of arc
    171022 G96  0.3+  0.4-    171024 104  0.4-  0.3-    171026 I52  0.1+  0.9+
    171022 G96  0.9+  0.9-    171024 104  0.8+  0.3+    171026 I52 (2.1+  0.3-)
    171022 G96  0.3+  0.4+    171024 104  1.1-  0.1+    171026 926  0.0   0.3+
    171022 H01  0.0   0.2-    171024 I52  0.6-  0.2-    171026 926  0.0   0.5+
    171022 H01  0.1-  0.1-    171024 I52  0.1-  0.1+    171026 926  0.1-  0.2+
    171022 H01  0.1+  0.1-    171024 I52  0.3-  0.1-    171028 V06  0.3-  0.3-
    171022 H01  0.1+  0.0     171024 926  0.0   0.2-    171028 V06  0.1+  0.3-
    171023 926  0.3-  0.3-    171024 926  0.2-  0.6+    171028 V06  0.0   0.3-
    171023 926  0.2-  0.2+    171024 926  0.2-  0.1+    171028 V06  0.0   0.1-
    171023 926  0.1-  1.0+    171025 I52  0.0   0.5-    201020 F52  0.1-  0.7+
    171023 I52  0.0   0.0     171025 I52  0.2-  0.3-    201020 F52  0.1+  0.1-
    171023 I52  0.2-  0.1+    171025 I52  0.2-  0.4-    201020 F52  0.1+  0.2+
    171023 I52  0.0   0.1+    171025 I52  0.2-  0.2-    201020 F52  0.2+  0.2-
    171023 I52  0.1+  0.1-    171025 926  0.3-  0.2-    201021 G96  0.1-  0.6-
    171023 I52  0.4+  0.0     171025 926  0.3-  0.4+    201021 G96  0.0   0.0
    171023 I52  0.1-  0.2+    171025 926  0.1-  0.2+    201021 G96  0.3+  0.2+
    171023 I52  0.3+  0.4-    171026 I52  0.0   0.2+    201021 G96  0.6-  0.1+
    
    Ephemeris:
    2017 UH5                 a,e,i = 1.31, 0.23, 9                   q = 1.0113
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 09 21    21 44 18.1 -83 39 35   0.1039  1.0203    96.1    78.1    24.4
    ...
    2020 10 06    23 56 53.6 -75 06 47   0.05887 1.0110    99.4    77.3    23.1
    ...
    2020 10 14    00 39 38.6 -58 09 44   0.03577 1.0122   113.3    64.9    21.6
    ...
    2020 10 20    01 01 51.8 -24 13 32   0.02446 1.0157   144.3    34.9    19.9
    2020 10 21    01 05 00.9 -16 05 39   0.02387 1.0166   151.6    27.7    19.7
    2020 10 22    01 08 02.4 -07 42 18   0.02379 1.0174   158.9    20.6    19.4
    ...
    2020 10 28    01 23 58.5 +32 12 15   0.03276 1.0240   158.2    21.1    20.2
    ...
    2020 11 05    01 40 48.5 +52 41 06   0.05661 1.0362   141.1    36.9    21.8
    ...
    2020 11 20    02 06 22.8 +61 39 12   0.1094  1.0680   134.8    41.0    23.4
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-U153
    


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