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  • MPEC 2017-Y02 : 2015 YG

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    M.P.E.C. 2017-Y02                                Issued 2017 Dec. 16, 12:26 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
    
                                        2015 YG
    
                               Revision to MPEC 2015-Y22
    
    Additional Observations:
         K15Y00G  C2017 12 15.47735 09 30 29.40 +08 15 11.7          22.1 RoEY002926
         K15Y00G  C2017 12 15.48627 09 30 28.21 +08 14 39.5          21.2 RoEY002926
         K15Y00G  C2017 12 16.45769 09 28 35.58 +07 14 57.0          21.6 RoEY002926
         K15Y00G  C2017 12 16.46662 09 28 34.36 +07 14 23.4          21.2 RoEY002926
         K15Y00G  C2017 12 16.47554 09 28 33.13 +07 13 49.0          21.3 RoEY002926
    
    Observer details:
    926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
        M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    171215 926 0.17+ 0.13-    171216 926 0.18+ 0.13-    MPO369302   -0.076 day
    
    Orbital elements:
    2015 YG                                                  Earth MOID = 0.0946 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M  46.41959              (2000.0)            P               Q
    n   1.52669319     Peri.  355.25374     -0.11553456     +0.96071813
    a   0.7469672      Node   267.95723     -0.90282607     -0.20749519
    e   0.4874604      Incl.   14.62517     -0.41419423     +0.18429981
    P   0.65           H   23.2           G   0.15           U   3
    Residuals in seconds of arc
    151216 F51  0.1+  0.1-    151217 291  0.1-  0.3+    151218 926  0.3+  0.1+
    151216 F51  0.0   0.1-    151217 568  0.1+  0.1-    160211 568  0.0   0.0
    151216 F51  0.2-  0.3-    151217 568  0.0   0.1-    160211 568  0.0   0.0
    151216 F51  0.0   0.1-    151217 568  0.1+  0.1-    171215 926  0.8+  0.5+
    151217 926  0.1+  0.4+    151217 G36  0.2+  0.2+    171215 926  0.1-  0.2+
    151217 926  0.3-  0.1-    151217 G36  0.1+  0.1+    171216 926  0.5-  0.3-
    151217 926  0.1+  0.3-    151217 G36  0.0   0.1-    171216 926  0.2-  0.1+
    151217 291  0.2-  0.4+    151218 926  0.3+  0.1-    171216 926  0.1+  0.3-
    151217 291  0.1+  0.2+    151218 926  0.1+  0.3-
    
    Ephemeris:
    2015 YG                  a,e,i = 0.75, 0.49, 15                  q = 0.3829
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 11 16    09 37 25.5 +23 57 44   0.4044  1.0988    94.7    63.8    23.7
    ...
    2017 12 01    09 42 10.3 +18 11 26   0.2998  1.1111   106.9    58.1    22.9
    ...
    2017 12 09    09 38 48.3 +13 35 55   0.2419  1.1068   114.4    54.2    22.3
    ...
    2017 12 15    09 31 20.7 +08 43 31   0.1992  1.0988   120.5    50.6    21.8
    2017 12 16    09 29 30.3 +07 43 54   0.1922  1.0970   121.5    49.9    21.7
    2017 12 17    09 27 27.1 +06 40 20   0.1854  1.0951   122.6    49.2    21.6
    ...
    2017 12 23    09 09 22.4 -01 28 39   0.1465  1.0814   128.7    45.2    20.9
    ...
    2017 12 31    08 18 42.4 -19 37 09   0.1066  1.0563   131.0    44.7    20.2
    ...
    2018 01 15    03 42 19.2 -53 17 57   0.1127  0.9880    88.9    84.5    21.4
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-Y02
    

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