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  • MPEC 2019-A198: 2017 UA8

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    M.P.E.C. 2019-A198                               Issued 2019 Jan. 12, 23:34 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 UA8
    
                              Revision to MPEC 2017-U267
    
    Additional Observations:
         K17U08A  C2015 03 24.52969312 38 25.096+11 05 42.27         21.9 GVEA198F51
         K17U08A  C2015 03 24.53035112 38 25.009+11 05 42.58         22.2 GVEA198F51
         K17U08A  C2015 03 24.55866612 38 21.927+11 05 50.15         21.9 GVEA198F51
         K17U08A  C2015 03 24.57477312 38 20.183+11 05 54.70         22.4 GVEA198F51
         K17U08A  C2015 03 24.58753912 38 18.778+11 05 57.93         21.7 GVEA198F51
         K17U08A  C2015 03 24.60031112 38 17.422+11 06 01.29         22.4 GVEA198F51
         K17U08A  C2015 04 18.42046811 57 46.688+11 04 54.65         22.0 GVEA198F51
         K17U08A  C2015 04 18.43213711 57 45.736+11 04 50.66         22.1 GVEA198F51
         K17U08A  C2015 04 18.44389211 57 44.811+11 04 47.18         21.9 GVEA198F51
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
        E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
        Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    150324 F51 70.1- 39.3+    150418 F51 63.4- 32.3+    MPO438039   -0.014 day
    
    Orbital elements:
    2017 UA8                                                 Earth MOID = 0.2939 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M 352.97121              (2000.0)            P               Q
    n   0.57413511     Peri.  288.85168     +0.90209352     +0.42071063
    a   1.4337056      Node    46.39942     -0.32886334     +0.81435381
    e   0.1152018      Incl.    7.62368     -0.27942116     +0.39978799
    P   1.72           H   21.5           G   0.15           U   2
    Residuals in seconds of arc
    150324 F51  0.2+  0.1-    171026 I52  0.1+  0.2+    171111 807  0.7+  0.3-
    150324 F51  0.0   0.1+    171027 926  0.0   0.3-    171111 807  0.0   0.0
    150324 F51  0.0   0.1-    171027 926  0.4-  0.1-    171111 807  0.0   0.1+
    150324 F51  0.0   0.1+    171027 G96  0.7+  0.1+    171116 H21  0.4-  0.5-
    150324 F51  0.4-  0.1-    171027 926  0.3-  0.5-    171116 H21  0.2-  0.4-
    150324 F51  0.1-  0.2-    171027 G96  0.3-  0.6+    171116 H21  0.2-  0.7-
    150418 F51  0.3+  0.3+    171027 G96  0.7+  0.4-    171117 H21  0.4-  0.2-
    150418 F51  0.0   0.0     171027 G96  0.3+  1.2+    171117 H21  0.3-  0.1-
    150418 F51  0.2+  0.2+    171028 V06  0.0   0.2-    171117 H21  0.3-  0.1-
    170914 F51  0.0   0.1-    171028 V06  0.4+  0.3+    171120 H21  0.3-  0.0
    170914 F51  0.1-  0.0     171028 V06  0.4+  0.1-    171120 H21  0.4-  0.1+
    170914 F51  0.1-  0.0     171028 691  0.4-  0.3-    171120 H21  0.2-  0.1-
    170914 F51  0.0   0.1+    171028 691  0.6+  0.2+    171122 807  0.1-  0.4-
    171026 G96  0.2+  0.6+    171028 691  0.2-  0.1+    171122 807  0.0   0.2-
    171026 G96  0.1+  0.1-    171029 711  0.2-  0.2-    171122 807  0.1-  0.1+
    171026 G96  0.1+  0.2+    171029 711  0.2+  0.4-    171127 H21  0.1-  1.1+
    171026 G96  0.3+  0.2+    171029 711  0.4+  0.3-    171127 H21  0.3-  0.8+
    171026 I52  0.1+  0.3+    171107 807  0.1+  0.1-    171127 H21  0.3-  0.6+
    171026 I52  0.2-  0.3+    171107 807  0.2+  0.0
    171026 I52  0.0   0.1+    171107 807  0.1+  0.1+
    
    Ephemeris:
    2017 UA8                 a,e,i = 1.43, 0.12, 8                   q = 1.2685
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 12 13    16 19 19.5 -22 19 21   2.3734  1.4370    13.9     9.4    24.8
    ...
    2018 12 28    17 08 13.7 -24 28 41   2.3164  1.4121    17.8    12.3    24.8
    ...
    2019 01 05    17 35 20.1 -25 15 02   2.2842  1.3988    19.7    13.7    24.8
    ...
    2019 01 11    17 56 03.4 -25 38 20   2.2595  1.3889    21.2    14.8    24.8
    2019 01 12    17 59 32.3 -25 41 14   2.2553  1.3872    21.4    15.0    24.8
    2019 01 13    18 03 01.7 -25 43 50   2.2512  1.3856    21.7    15.2    24.8
    ...
    2019 01 19    18 24 06.0 -25 53 15   2.2260  1.3758    23.1    16.3    24.8
    ...
    2019 01 27    18 52 29.2 -25 48 56   2.1924  1.3631    24.8    17.7    24.8
    ...
    2019 02 11    19 46 05.0 -24 47 53   2.1297  1.3402    27.9    20.2    24.8
    
    A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-A198
    

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