• MPC Preparation (Info)

  • MPEC 2017-Y154: 2017 YH7

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    M.P.E.C. 2017-Y154                               Issued 2017 Dec. 30, 19:17 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 YH7
    
    Observations:
         K17Y07H* C2017 12 28.46547 11 33 17.23 +29 05 04.7          20.3 GUEY154G96
         K17Y07H  C2017 12 28.47061 11 33 07.29 +29 05 07.6          20.3 GUEY154G96
         K17Y07H  C2017 12 28.47574 11 32 57.51 +29 05 09.9          19.5 GUEY154G96
         K17Y07H  C2017 12 28.48086 11 32 47.71 +29 05 11.0          19.9 GUEY154G96
         K17Y07H  C2017 12 28.53888 11 30 57.28 +29 05 23.7          20.6 GUEY154I52
         K17Y07H  C2017 12 28.53988 11 30 55.34 +29 05 23.7          20.3 GUEY154I52
         K17Y07H  C2017 12 28.54089 11 30 53.45 +29 05 23.7          20.2 GUEY154I52
         K17Y07H  C2017 12 28.54190 11 30 51.60 +29 05 24.3          20.7 GUEY154I52
         K17Y07H  C2017 12 29.41756 11 06 21.79 +28 58 53.9          20.7 GUEY154I52
         K17Y07H  C2017 12 29.41800 11 06 21.28 +28 58 56.8          20.0 RoEY154926
         K17Y07H  C2017 12 29.41852 11 06 20.30 +28 58 53.5          21.0 GUEY154I52
         K17Y07H  C2017 12 29.41948 11 06 18.76 +28 58 52.3          20.0 GUEY154I52
         K17Y07H  C2017 12 29.42044 11 06 17.18 +28 58 51.9          20.4 GUEY154I52
         K17Y07H  C2017 12 29.42113 11 06 16.26 +28 58 54.4          20.3 RoEY154926
         K17Y07H  C2017 12 29.42427 11 06 11.19 +28 58 52.4          20.2 RoEY154926
         K17Y07H  C2017 12 30.37891 10 43 40.69 +28 38 14.1          21.0 GUEY154I52
         K17Y07H  C2017 12 30.37987 10 43 39.32 +28 38 12.8          20.5 GUEY154I52
         K17Y07H  C2017 12 30.38084 10 43 38.05 +28 38 11.2          20.9 GUEY154I52
         K17Y07H  C2017 12 30.38180 10 43 36.78 +28 38 10.0          21.4 GUEY154I52
    
    Observer details:
    926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
        M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer D. C. Fuls.  Measurers E. J. Christensen,
        D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
        S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
        1.5-m reflector + 10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer R. G. Matheny.
        Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
        J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
        R. L. Seaman, F. C. Shelly.  1.0-m reflector + CCD.
    
    Orbital elements:
    2017 YH7                                                 Earth MOID = 0.0166 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 339.16484              (2000.0)            P               Q
    n   0.27545298     Peri.   85.77019     +0.76966842     -0.63785378
    a   2.3393995      Node   313.85892     +0.56962702     +0.70548438
    e   0.6541146      Incl.    2.18114     +0.28833242     +0.30892450
    P   3.58           H   24.8           G   0.15           U   6
    Residuals in seconds of arc
    171228 G96  0.8+  0.7-    171228 I52  0.5+  0.1+    171229 926  0.5+  0.7+
    171228 G96  0.5-  0.1+    171229 I52  0.9-  0.3-    171230 I52  0.7+  0.1-
    171228 G96  0.0   0.5+    171229 926  0.8+  0.5+    171230 I52  0.5-  0.1-
    171228 G96  0.1-  0.2-    171229 I52  0.3-  0.0     171230 I52  0.1-  0.4-
    171228 I52  0.0   0.3-    171229 I52  0.2-  0.5-    171230 I52  0.0   0.3-
    171228 I52  0.6-  0.4-    171229 I52  0.8-  0.2-
    171228 I52  0.3-  0.4-    171229 926  0.9+  0.4+
    
    Ephemeris:
    2017 YH7                 a,e,i = 2.34, 0.65, 2                   q = 0.8092
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 11 30    18 57 31.0 -14 26 48   0.2110  0.8279    37.1   134.0    27.1
    ...
    2017 12 15    18 03 35.5 -05 15 12   0.08654 0.9034    19.8   158.3    29.7
    ...
    2017 12 23    15 16 10.3 +16 51 59   0.04351 0.9611    57.6   120.2    22.8
    ...
    2017 12 29    11 17 32.3 +29 04 10   0.05646 1.0098   116.5    60.6    20.7
    2017 12 30    10 52 03.5 +28 47 54   0.06204 1.0183   122.8    54.2    20.8
    2017 12 31    10 31 00.6 +28 21 05   0.06812 1.0269   128.2    48.8    20.9
    ...
    2018 01 06    09 19 31.4 +25 22 06   0.1104  1.0800   149.6    27.4    21.4
    ...
    2018 01 14    08 41 21.1 +22 58 57   0.1748  1.1540   166.1    11.9    22.0
    ...
    2018 01 29    08 14 03.5 +20 58 26   0.3155  1.2982   172.2     5.9    23.3
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-Y154
    

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