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  • MPEC 2017-W156: 2012 YO1

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    M.P.E.C. 2017-W156                               Issued 2017 Nov. 25, 18:23 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
    
                                       2012 YO1
    
                               Revision to MPEC 2012-Y12
    
    Additional Observations:
         K12Y01O  C2017 11 24.45584 10 29 48.58 +06 34 08.4          21.2 RoEW156926
         K12Y01O  C2017 11 24.46478 10 29 49.68 +06 34 33.3          21.1 RoEW156926
         K12Y01O  C2017 11 24.47370 10 29 50.91 +06 34 58.6          21.0 RoEW156926
         K12Y01O  C2017 11 24.61341810 30 10.019+06 41 34.02         21.2 GUEW156T14
         K12Y01O  C2017 11 24.61436410 30 10.140+06 41 36.67         21.2 GUEW156T14
         K12Y01O  C2017 11 24.61531210 30 10.263+06 41 39.35         21.2 GUEW156T14
         K12Y01O  C2017 11 24.61732210 30 10.518+06 41 44.84         21.3 GUEW156T14
         K12Y01O  C2017 11 24.61826710 30 10.637+06 41 47.51         21.3 GUEW156T14
         K12Y01O KC2017 11 25.41300 10 31 59.45 +07 18 39.6                oEW156691
         K12Y01O KC2017 11 25.42488 10 32 01.01 +07 19 12.9                oEW156691
         K12Y01O KC2017 11 25.43669 10 32 02.54 +07 19 45.4                oEW156691
         K12Y01O  C2017 11 25.52722 10 32 14.16 +07 23 57.9          20.5 RoEW156926
         K12Y01O  C2017 11 25.53613 10 32 15.31 +07 24 23.6          22.3 RoEW156926
         K12Y01O  C2017 11 25.62463210 32 27.536+07 28 32.82         21.4 GUEW156T14
         K12Y01O  C2017 11 25.62557610 32 27.658+07 28 35.45         21.5 GUEW156T14
    
    Observer details:
    691 Steward Observatory, Kitt Peak.  Observer M. J. Brucker.  0.9-m f/3
        reflector + CCD.
    926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
        M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
    T14 Mauna Kea-UH/Tholen NEO Follow-Up (CFHT).  Observer C. Wipper.  Measurer
        D. J. Tholen.  3.6-m Canada-France-Hawaii Telescope.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    171124 926 0.09+ 0.19+    171125 T14 0.09+ 0.17+    MPO254826   -0.19 day
    
    Orbital elements:
    2012 YO1                                            PHA, Earth MOID = 0.0422 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 341.48724              (2000.0)            P               Q
    n   0.39986862     Peri.  312.64992     +0.74870053     -0.59150555
    a   1.8246987      Node    85.85959     +0.66129930     +0.63499862
    e   0.4907797      Incl.   17.46141     +0.04616001     +0.49688826
    P   2.46           H   21.3           G   0.15           U   2
    Residuals in seconds of arc
    121218 704  1.1-  0.2-    121228 160  0.0   0.7+    130107 H21  0.0   0.0
    121218 704  0.5-  0.5+    121228 160  0.1+  0.4+    130107 H21  0.0   0.1-
    121218 704  0.2-  0.0     121228 160  0.2-  0.3+    130107 I42 (2.7+  1.7-)
    121218 704  0.6-  0.5+    121228 160  0.3-  0.6+    130107 I42  0.1+  0.6-
    121218 704  0.1+  0.7+    121229 448  0.2+  0.0     130108 695  0.2-  0.0
    121219 470  0.2+  0.3-    121229 448  0.1+  0.0     130108 695  0.3-  0.1+
    121219 470  0.9+  0.6+    121229 448  0.1-  0.2-    130108 695  0.2-  0.0
    121219 470  0.1-  1.3+    121230 160  0.4+  0.3-    130119 291  0.0   0.0
    121219 C44  0.3+  0.0     121230 160  0.1-  0.1+    130119 291  0.2-  0.1+
    121219 C44  0.1-  0.4+    121230 160  0.4+  0.4-    130119 291  0.0   0.1+
    121219 C44  0.1+  0.1-    121231 160  0.6-  0.4-    130120 291  0.2-  0.1+
    121219 C44  0.0   0.2+    121231 160  0.2-  0.2-    130120 291  0.1+  0.5+
    121219 C44  0.1+  0.0     121231 160  0.9+  0.4+    130120 291  0.1+  0.1+
    121219 204  0.0   0.0     130102 H21  0.3+  0.0     130131 291  0.2-  0.1-
    121219 204  0.2+  0.5-    130102 H21  0.4+  0.0     130131 291  0.1-  0.0
    121219 204  0.1+  0.1-    130102 H21  0.0   0.1-    130131 291  0.1-  0.1-
    121219 204  0.1-  0.1+    130102 H21  0.2+  0.3-    130201 291  0.0   0.1+
    121219 204  0.3+  0.4-    130102 H21  0.1+  0.1-    130201 291  0.1-  0.1-
    121220 448  0.0   0.1-    130103 204  0.0   0.0     130201 291  0.1-  0.1-
    121220 448  0.1+  0.1-    130103 204  0.1-  0.0     171124 926  0.4+  0.4+
    121220 448  0.5-  0.5-    130103 204  0.1+  0.1-    171124 926  0.6-  0.1+
    121220 448  0.8+  0.1+    130103 H21  0.0   0.1-    171124 926  0.4+  0.3+
    121220 448  0.3+  0.1+    130103 H21  0.4+  0.1-    171124 T14  0.0   0.3-
    121222 H21  0.2+  0.1+    130103 H21  0.1+  0.1+    171124 T14  0.1-  0.3-
    121222 H21  0.4+  0.2-    130104 291  0.1-  0.2+    171124 T14  0.0   0.3-
    121222 H21  0.0   0.1-    130104 291  0.1+  0.0     171124 T14  0.1-  0.5-
    121222 H21  0.1-  0.3-    130104 291  0.1-  0.1+    171124 T14  0.1-  0.4-
    121228 B03  0.8-  0.7-    130105 H21  0.3+  0.2-    171125 691  0.1+  0.1+
    121228 B03  0.7+  0.3+    130105 H21  0.0   0.2+    171125 691  0.3+  0.2+
    121228 B03 (0.3+  1.7+)   130105 H21  0.1+  0.1-    171125 691  0.2+  0.3-
    121228 B03  0.3+  0.7+    130105 H21  0.2+  0.2-    171125 926  0.8+  0.3-
    121228 B03  0.4-  0.2-    130105 B88  0.6+  0.1-    171125 926  1.1+  0.6+
    121228 560  0.6-  1.4-    130105 B88  0.2+  0.5+    171125 T14  0.0   0.3-
    121228 560  0.7-  1.5-    130105 B88  1.1+  0.3+    171125 T14  0.0   0.3-
    121228 560  0.4-  1.1-    130107 H21  0.1+  0.1-
    
    Ephemeris:
    2012 YO1                 a,e,i = 1.82, 0.49, 17                  q = 0.9292
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 10 26    09 11 27.2 -20 03 22   0.3159  0.9319    69.5    92.0    21.9
    ...
    2017 11 10    09 53 29.5 -05 31 11   0.3377  0.9641    75.7    84.5    21.8
    ...
    2017 11 18    10 14 18.1 +01 23 29   0.3521  0.9945    80.7    78.8    21.8
    ...
    2017 11 24    10 28 44.6 +06 12 56   0.3632  1.0223    85.1    74.2    21.7
    2017 11 25    10 31 02.1 +06 59 38   0.3650  1.0273    85.8    73.4    21.7
    2017 11 26    10 33 17.3 +07 45 57   0.3669  1.0324    86.6    72.6    21.7
    ...
    2017 12 02    10 45 59.8 +12 16 22   0.3781  1.0649    91.5    67.7    21.7
    ...
    2017 12 10    11 00 26.2 +18 01 52   0.3931  1.1125    98.4    61.1    21.7
    ...
    2017 12 25    11 17 23.1 +28 23 58   0.4230  1.2111   112.7    48.5    21.7
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-W156
    

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