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  • MPEC 2017-Y69 : 2017 YY

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    M.P.E.C. 2017-Y69                                Issued 2017 Dec. 23, 21:12 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 YY
    
    Observations:
         K17Y00Y* C2017 12 20.17588 02 43 59.02 +01 32 14.2          20.9 GUEY069G96
         K17Y00Y  C2017 12 20.18154 02 43 58.19 +01 34 25.4          21.1 GUEY069G96
         K17Y00Y  C2017 12 20.19285 02 43 56.56 +01 38 52.2          20.5 GUEY069G96
         K17Y00Y  C2017 12 20.26050 02 43 46.84 +02 05 18.0          20.3 GUEY069I52
         K17Y00Y  C2017 12 20.26242 02 43 46.58 +02 06 03.7          20.9 GUEY069I52
         K17Y00Y  C2017 12 20.26436 02 43 46.29 +02 06 48.6          20.7 GUEY069I52
         K17Y00Y  C2017 12 20.26628 02 43 46.01 +02 07 33.6          20.3 GUEY069I52
         K17Y00Y  C2017 12 21.07354 02 42 49.68 +07 19 51.7          20.4 GUEY069I52
         K17Y00Y  C2017 12 21.07499 02 42 49.50 +07 20 25.1          20.4 GUEY069I52
         K17Y00Y  C2017 12 21.07643 02 42 49.29 +07 20 57.7          20.3 GUEY069I52
         K17Y00Y  C2017 12 21.09203 02 42 47.27 +07 26 58.2          20.7 RoEY069926
         K17Y00Y  C2017 12 21.09575 02 42 46.79 +07 28 24.4          20.3 RoEY069926
         K17Y00Y  C2017 12 21.09947 02 42 46.33 +07 29 49.6          20.0 RoEY069926
         K17Y00Y  C2017 12 22.10944 02 41 27.87 +13 46 19.1          21.3 RoEY069926
         K17Y00Y  C2017 12 22.11288 02 41 27.47 +13 47 34.3          21.4 RoEY069926
         K17Y00Y  C2017 12 22.11630 02 41 27.07 +13 48 48.3          21.6 RoEY069926
         K17Y00Y  C2017 12 23.09577 02 40 19.60 +19 32 10.9          20.5 GUEY069V06
         K17Y00Y  C2017 12 23.09756 02 40 19.44 +19 32 48.2          20.8 GUEY069V06
         K17Y00Y  C2017 12 23.09936 02 40 19.17 +19 33 24.4          20.7 GUEY069V06
         K17Y00Y  C2017 12 23.10117 02 40 18.99 +19 34 01.5          20.8 GUEY069V06
         K17Y00Y  C2017 12 23.11149 02 40 17.72 +19 37 34.2          21.0 RoEY069926
         K17Y00Y  C2017 12 23.11532 02 40 17.25 +19 38 52.0          21.1 RoEY069926
         K17Y00Y  C2017 12 23.11917 02 40 16.80 +19 40 10.2          21.2 RoEY069926
    
    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.
    V06 Catalina Sky Survey-Kuiper.  Observer A. R. Gibbs.  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.  1.55-m reflector + CCD.
    
    Orbital elements:
    2017 YY                                                  Earth MOID = 0.0364 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 304.46759              (2000.0)            P               Q
    n   0.78566774     Peri.  319.20236     +0.64569692     -0.70227975
    a   1.1631707      Node    88.28404     +0.75507147     +0.52872745
    e   0.1502949      Incl.   17.45353     +0.11376538     +0.47670791
    P   1.25           H   25.6           G   0.15           U   7
    Residuals in seconds of arc
    171220 G96  0.1-  0.6+    171221 I52  0.2+  0.5+    171223 V06  0.1-  0.3-
    171220 G96  0.1-  1.1-    171221 I52  0.2-  0.0     171223 V06  0.7+  0.5+
    171220 G96  0.5+  0.2+    171221 926  0.5-  0.4-    171223 V06  0.0   0.0
    171220 I52  0.2+  0.3-    171221 926  0.2-  0.4+    171223 V06  0.5+  0.2+
    171220 I52  0.3+  0.4+    171221 926  0.5+  0.2+    171223 926  0.4-  0.2+
    171220 I52  0.1-  0.1-    171222 926  0.8-  0.3-    171223 926  0.3-  0.1+
    171220 I52  0.3-  0.1-    171222 926  0.1-  0.2-    171223 926  0.0   0.0
    171221 I52  0.0   0.5+    171222 926  0.6+  0.8-
    
    Ephemeris:
    2017 YY                  a,e,i = 1.16, 0.15, 17                  q = 0.9884
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 11 23    03 47 24.0 -73 12 44   0.1559  0.9903    86.5    84.5    24.5
    ...
    2017 12 08    03 07 55.7 -54 50 34   0.08391 1.0015    98.9    76.3    22.9
    ...
    2017 12 16    02 50 53.4 -24 32 30   0.05516 1.0113   118.0    59.3    21.5
    ...
    2017 12 22    02 41 32.5 +13 07 06   0.05322 1.0201   131.9    45.8    21.0
    2017 12 23    02 40 22.0 +19 00 05   0.05513 1.0217   132.4    45.3    21.1
    2017 12 24    02 39 18.9 +24 26 35   0.05759 1.0233   132.3    45.3    21.2
    ...
    2017 12 30    02 35 45.7 +47 28 02   0.08037 1.0336   126.9    49.5    22.0
    ...
    2018 01 07    02 39 07.5 +61 47 27   0.1207  1.0489   120.0    54.3    23.1
    ...
    2018 01 22    03 15 19.9 +71 47 56   0.2035  1.0813   113.4    56.6    24.4
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-Y69
    

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