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  • MPEC 2018-A18 : 2017 YP8

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    M.P.E.C. 2018-A18                                Issued 2018 Jan. 6, 22:10 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 YP8
    
    Observations:
         K17Y08P* C2017 12 24.27225 04 26 20.040+08 25 56.58         22.5 wUEA018F51
         K17Y08P  C2017 12 24.28500 04 26 19.017+08 25 50.98         22.3 wUEA018F51
         K17Y08P  C2017 12 24.31049 04 26 16.946+08 25 39.79         22.1 wUEA018F51
         K17Y08P KC2017 12 25.23382 04 25 05.62 +08 18 53.1                oEA018711
         K17Y08P KC2017 12 25.23992 04 25 05.14 +08 18 50.2                oEA018711
         K17Y08P IC2017 12 25.24453 04 25 04.76 +08 18 48.5                oEA018711
         K17Y08P KC2017 12 25.33697 04 24 57.55 +08 18 07.5          22.3 RoEA018291
         K17Y08P KC2017 12 25.34597 04 24 56.84 +08 18 03.9          22.5 RoEA018291
         K17Y08P KC2017 12 25.35497 04 24 56.11 +08 17 59.7          22.3 RoEA018291
         K17Y08P KC2017 12 26.18307 04 23 54.37 +08 12 09.6                oEA018711
         K17Y08P KC2017 12 26.18736 04 23 54.05 +08 12 07.6                oEA018711
         K17Y08P KC2017 12 26.19165 04 23 53.72 +08 12 05.7                oEA018711
         K17Y08P KC2017 12 26.31152 04 23 44.45 +08 11 17.0                oEA018291
         K17Y08P KC2017 12 26.32051 04 23 43.81 +08 11 12.1          22.9 RoEA018291
         K17Y08P KC2017 12 26.32950 04 23 43.09 +08 11 08.6          23.0 RoEA018291
         K17Y08P ^C2018 01 05.07393 04 13 25.32 +07 16 56.4          21.3 RoEA018695
         K17Y08P ^C2018 01 05.08248 04 13 24.85 +07 16 54.1          21.3 RoEA018695
         K17Y08P ^C2018 01 05.09103 04 13 24.38 +07 16 51.9          21.1 RoEA018695
         K17Y08P  C2018 01 06.11186104 12 32.87 +07 12 45.8          22.4 GUEA018H01
         K17Y08P  C2018 01 06.11646404 12 32.63 +07 12 44.7          21.8 GUEA018H01
         K17Y08P  C2018 01 06.12827004 12 32.01 +07 12 42.0          22.0 GUEA018H01
         K17Y08P  C2018 01 06.13381604 12 31.73 +07 12 40.6          21.7 GUEA018H01
    
    Observer details:
    291 LPL/Spacewatch II.  Observer A. F. Tubbiolo.  1.8-m f/2.7 reflector + CCD.
    695 Kitt Peak.  Observer A. F. Tubbiolo.  2.3-m f/9 reflector + CCD.
    711 McDonald Observatory.  Observer J. G. Ries.  2.1-m reflector + CCD + focal
        reducer.
    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.
    
    Orbital elements:
    2017 YP8                                                 Earth MOID = 0.2014 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 254.81010              (2000.0)            P               Q
    n   0.37361193     Peri.  325.81486     -0.98241904     +0.13771688
    a   1.9092182      Node   222.66708     -0.10037393     -0.95890691
    e   0.3817284      Incl.   10.71807     -0.15741001     -0.24805562
    P   2.64           H   20.1           G   0.15           U   7
    Residuals in seconds of arc
    171224 F51  0.1-  0.1-    171225 291  0.3-  0.3-    180105 695  0.2-  0.2-
    171224 F51  0.1+  0.0     171226 711  0.0   0.2-    180105 695  0.3-  0.3-
    171224 F51  0.1+  0.1+    171226 711  0.2+  0.4-    180106 H01  0.1+  0.1+
    171225 711  0.3-  0.3+    171226 711  0.3+  0.5-    180106 H01  0.1+  0.1+
    171225 711  0.2-  0.1+    171226 291  0.4-  1.0+    180106 H01  0.1+  0.1+
    171225 711  0.4-  0.4+    171226 291  0.4+  0.1-    180106 H01  0.2+  0.0
    171225 291  0.1+  0.4-    171226 291  0.0   0.1+
    171225 291  0.1+  0.1-    180105 695  0.1-  0.0
    
    Ephemeris:
    2017 YP8                 a,e,i = 1.91, 0.38, 11                  q = 1.1804
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 12 07    04 51 08.5 +11 04 42   0.9584  1.9338   168.5     5.8    21.9
    ...
    2017 12 22    04 29 20.8 +08 43 33   0.9284  1.8621   153.7    13.5    22.1
    ...
    2017 12 30    04 19 25.2 +07 47 40   0.9341  1.8229   143.9    18.6    22.2
    ...
    2018 01 05    04 13 28.8 +07 17 19   0.9463  1.7931   136.6    22.1    22.3
    2018 01 06    04 12 38.2 +07 13 16   0.9489  1.7881   135.5    22.7    22.3
    2018 01 07    04 11 50.2 +07 09 30   0.9516  1.7831   134.3    23.3    22.3
    ...
    2018 01 13    04 07 59.7 +06 52 57   0.9708  1.7529   127.5    26.4    22.5
    ...
    2018 01 21    04 05 32.8 +06 46 14   1.0022  1.7122   119.1    30.1    22.6
    ...
    2018 02 05    04 09 07.6 +07 13 05   1.0697  1.6353   105.3    35.5    22.8
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-A18
    

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