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  • MPEC 2020-Q100 : 2012 YK7

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    M.P.E.C. 2020-Q100                              Issued 2020 August 19, 17:58 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 YK7                                 
    
    
                                Revision to MPEC 2013-A8                            
    
    Additional Observations:
         K12Y07K  C2020 07 17.52731623 55 37.890-03 54 40.62         23.02GVEQ100F51
         K12Y07K  C2020 07 17.53938123 55 39.744-03 54 40.35         22.57GVEQ100F51
         K12Y07K  C2020 07 17.55143523 55 41.553-03 54 39.57         23.26GVEQ100F51
         K12Y07K  C2020 07 18.58674223 58 22.483-03 53 58.77         22.55GVEQ100F52
         K12Y07K  C2020 07 29.58141600 29 53.555-04 06 14.91         22.36GVEQ100F51
         K12Y07K  C2020 07 29.59961700 29 56.903-04 06 18.15         22.49GVEQ100F51
         K12Y07K  C2020 07 29.60873500 29 58.584-04 06 19.13         22.42GVEQ100F51
         K12Y07K  C2020 08 17.56723001 45 03.732-06 18 30.13         21.18GVEQ100F52
         K12Y07K  C2020 08 17.57891701 45 07.125-06 18 38.54         21.77GVEQ100F52
         K12Y07K  C2020 08 17.59056401 45 10.493-06 18 46.03         21.57GVEQ100F52
         K12Y07K  C2020 08 19.42253 01 54 29.78 -06 40 40.7          21.7 GVEQ100G96
         K12Y07K  C2020 08 19.42778 01 54 31.44 -06 40 44.7          21.1 GVEQ100G96
         K12Y07K  C2020 08 19.43302 01 54 33.01 -06 40 48.2          21.4 GVEQ100G96
         K12Y07K  C2020 08 19.43825 01 54 34.58 -06 40 53.5                VEQ100G96
         K12Y07K  C2020 08 19.45328 01 54 39.15 -06 41 03.9          20.6 GVEQ100I52
         K12Y07K  C2020 08 19.45664 01 54 40.20 -06 41 06.3          21.6 GVEQ100I52
         K12Y07K  C2020 08 19.46000 01 54 41.18 -06 41 08.9          21.7 GVEQ100I52
         K12Y07K  C2020 08 19.46337 01 54 42.25 -06 41 11.3          21.6 GVEQ100I52
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
        Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
        Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
        Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y.
        Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer H. Groeller.  Measurers E. J. Christensen, G.
        A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
        Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
        Seaman, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector + 10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer T. A. Pruyne.
        Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
        Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A.
        Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m
        reflector + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    200717 F51 0.57+ 0.16+    200819 I52 1.13+ 0.43+    MPO254826   +0.47 days
    
    Orbital elements:
    2012 YK7                                                 Earth MOID = 0.1218 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
    M 304.55588              (2000.0)            P               Q
    n   0.37263715     Peri.  282.46311     +0.56895732     -0.81100072
    a   1.9125463      Node   131.99783     +0.80762314     +0.51980044
    e   0.5030365      Incl.   10.56453     +0.15502395     +0.26848712
    P   2.64           H   21.5           G   0.15           U   1
    Residuals in seconds of arc
    121229 F51  0.2+  0.2-    130107 291  0.3-  0.5-    130205 G96  0.3-  0.2-
    121229 F51  0.3+  0.1+    130107 291  0.3-  0.5+    130205 G96  0.2-  0.2-
    121230 807  0.1+  0.0     130107 291  0.0   0.7-    130212 F51  0.0   0.0
    121230 807  0.2-  0.1-    130108 291  0.3-  0.0     130212 F51  0.1-  0.0
    121230 807  0.2+  0.5+    130108 291  0.1+  0.2+    130212 F51  0.1-  0.0
    121230 807  0.2+  0.1+    130108 291  0.0   0.2-    130212 F51  0.1-  0.1+
    121231 D90  0.1+  0.1-    130110 291  0.3-  0.1+    200717 F51  0.4-  0.0
    121231 D90  0.5-  0.4+    130110 291  0.1-  0.2+    200717 F51  0.3+  0.3-
    121231 D90  0.2-  0.3+    130110 291  0.4-  0.4+    200717 F51  0.3+  0.0
    130102 H36  0.0   0.0     130112 204  0.1-  0.0     200718 F52  0.5+  0.1-
    130102 H36  0.1+  0.7-    130112 204  0.0   0.1+    200729 F51  0.1+  0.1-
    130102 H36  0.1+  0.6-    130112 204  0.2-  0.3+    200729 F51  0.1+  0.1-
    130105 H21  0.3+  0.1-    130118 H21  0.1+  0.2-    200729 F51  0.1+  0.5+
    130105 H21  0.1-  0.3-    130118 H21  0.9+  0.0     200817 F52  0.4-  0.1+
    130105 H21  0.3-  0.3-    130118 H21  0.0   0.3+    200817 F52  0.2-  0.3-
    130105 H21  0.1-  0.6-    130118 H21  0.2+  0.1+    200817 F52  0.1-  0.3+
    130105 H21  0.1+  0.6-    130118 F51  0.1-  0.1+    200819 G96  0.4-  0.2+
    130105 291  0.2+  0.4+    130118 F51  0.1-  0.0     200819 G96  0.5+  0.1+
    130105 291  0.1+  0.0     130118 F51  0.1+  0.0     200819 G96  0.1+  0.5+
    130105 291  0.1+  0.0     130118 F51  0.0   0.1+    200819 G96  0.3-  0.9-
    130106 807  0.2+  0.2+    130202 448  0.3-  0.3+    200819 I52  0.4-  0.1-
    130106 807  0.2+  0.2+    130202 448  0.0   0.2-    200819 I52  0.0   0.0
    130106 807  0.3+  0.1+    130202 448  0.6-  0.2-    200819 I52  0.6-  0.1-
    130106 807  0.3+  0.2+    130205 G96  0.1-  0.2-    200819 I52  0.1+  0.1+
    130106 807  0.1+  0.1+    130205 G96  0.0   0.3+
    
    Ephemeris:
    2012 YK7                 a,e,i = 1.91, 0.50, 11                  q = 0.9505
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 07 20    00 02 06.2 -03 53 25   0.6779  1.4660   118.5    37.5    23.0
    ...
    2020 08 04    00 48 03.1 -04 27 36   0.5118  1.3575   122.1    39.3    22.3
    ...
    2020 08 12    01 19 19.3 -05 22 12   0.4366  1.3003   122.3    41.2    21.9
    ...
    2020 08 18    01 47 12.8 -06 23 20   0.3876  1.2580   121.3    43.4    21.6
    2020 08 19    01 52 17.8 -06 35 15   0.3801  1.2511   121.0    43.9    21.6
    2020 08 20    01 57 30.9 -06 47 39   0.3728  1.2441   120.7    44.4    21.5
    ...
    2020 08 26    02 31 48.5 -08 11 05   0.3338  1.2032   117.8    48.0    21.3
    ...
    2020 09 03    03 25 49.7 -10 16 57   0.2954  1.1508   111.6    54.6    21.1
    ...
    2020 09 18    05 24 11.6 -13 20 02   0.2708  1.0629    94.9    70.4    21.3
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-Q100
    


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