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  • MPEC 2023-F135 : 2014 JR2

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    M.P.E.C. 2023-F135                               Issued 2023 March 25, 14:06 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets, routine data on comets and natural satellites,
             and occasional editorial announcements.  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
    
                                    2014 JR2                                 
    
    
                               Revision to MPEC 2014-J41                            
    
    Additional Observations:
         K14J02R 0C2023 03 20.49090012 52 23.723-25 14 32.70         21.79GVEF135T12
         K14J02R 0C2023 03 20.49156812 52 23.708-25 14 32.47         21.85GVEF135T12
         K14J02R 0C2023 03 20.50521112 52 23.355-25 14 26.19         21.74GVEF135T12
         K14J02R 0C2023 03 20.50612612 52 23.337-25 14 25.79         21.72GVEF135T12
         K14J02R 0C2023 03 20.50745012 52 23.301-25 14 25.13         21.86GVEF135T12
         K14J02R KC2023 03 23.56194712 51 20.30 -24 46 28.7          21.0 GVEF135474
         K14J02R KC2023 03 23.56546512 51 20.19 -24 46 26.4          21.3 GVEF135474
         K14J02R KC2023 03 23.56898412 51 20.09 -24 46 24.4          21.2 GVEF135474
         K14J02R KC2023 03 23.57250312 51 19.97 -24 46 22.0          21.1 GVEF135474
         K14J02R KC2023 03 25.42861 12 50 30.13 -24 24 54.3                VEF135691
         K14J02R KC2023 03 25.43986 12 50 29.73 -24 24 44.9                VEF135691
    
    Observer details:
    474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M.
        Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
    691 Steward Observatory, Kitt Peak-Spacewatch.  Observer T. H. Bressi.  0.9-m
        f/3 reflector + CCD.
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observer D. Hung.
        Measurer D. J. Tholen.  2.24-m f/10.1 reflector + 2112 x 2112 pixels
        STA1600 10k CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    230320 T12 0.03+ 0.01+    230325 691 0.03+ 0.01+    MPO315290   +0.04 days
    
    Orbital elements:
    2014 JR2                                                 Earth MOID = 0.0802 AU
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Veres                   
    M 307.10176              (2000.0)            P               Q                  
    n   0.43901596     Peri.   75.07545     +0.22564742     +0.96669254             
    a   1.7145461      Node   208.84035     -0.96205719     +0.20159223             
    e   0.4868000      Incl.   14.50098     -0.15339232     +0.15768988             
    P   2.25           H   21.62          G   0.15           U   0                  
    Residuals in seconds of arc
    140502 G96  0.2+  0.5+    140504 G96  0.5-  0.0     140917 H21  0.3-  0.1+
    140502 G96  0.1+  0.1+    140504 G96  1.0-  0.9+    140917 H21  0.5-  0.7-
    140502 G96  0.3+  0.5+    140504 G96  0.3+  0.0     141001 H21  0.9+  0.3-
    140502 G96  1.0+  0.1-    140504 G96  0.2+  0.1+    141001 H21  0.5+  0.4-
    140502 G96  0.2-  0.7+    140504 G96  0.3+  0.3+    141001 H21  0.7+  0.1+
    140502 G96  0.2-  0.3-    140504 G96  0.6+  0.4+    141021 G96  0.1+  0.2+
    140502 G96  0.1-  0.2-    140504 926  0.4+  0.3-    141021 G96  0.3+  0.3-
    140502 K91  0.4+  0.2+    140504 926  0.0   0.3+    141021 G96  0.1+  0.5+
    140502 K91  0.3+  0.2+    140504 926  0.1+  0.0     141021 G96  0.6+  0.3-
    140502 K91  0.0   0.1-    140517 C51  0.3-  0.2-    230320 T12  0.0   0.0
    140502 J95  1.3+  0.4-    140517 C51  0.3-  0.4-    230320 T12  0.0   0.1-
    140502 J95  0.1+  0.2+    140517 C51  0.1-  1.1+    230320 T12  0.1-  0.0
    140502 J95  0.1+  0.5-    140517 C51  0.5+  0.5-    230320 T12  0.0   0.0
    140503 G96  0.4+  0.2+    140518 C51  0.2-  0.2-    230320 T12  0.0   0.0
    140503 G96  0.0   0.1-    140518 C51  0.9-  1.0-    230323 474  0.0   0.1-
    140503 G96  0.1+  0.1-    140522 291  0.0   0.2+    230323 474  0.0   0.0
    140503 H01  0.3-  0.3+    140522 291  0.0   0.4+    230323 474  0.1+  0.3-
    140503 H01  0.0   0.4+    140522 291  0.4-  0.3+    230323 474  0.0   0.2-
    140503 H01  0.1-  0.2+    140602 291  0.1+  0.3+    230325 691  0.3-  0.6-
    140503 H01  0.4-  0.5+    140602 291  0.0   0.3+    230325 691  0.2-  0.2-
    140504 G96  0.2+  0.0     140602 291  0.2+  0.3+
    140504 G96  0.3+  0.1-    140917 H21  0.3+  0.3+
    
    Ephemeris:
    2014 JR2                 a,e,i = 1.71, 0.49, 15                  q = 0.8799
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 02 23    12 48 25.4 -24 49 20   0.7595  1.5891   130.2    28.4    23.3
    ...
    2023 03 10    12 53 19.0 -25 47 23   0.5700  1.4845   142.1    24.3    22.4
    ...
    2023 03 18    12 52 59.2 -25 30 00   0.4792  1.4273   149.0    21.0    21.8
    ...
    2023 03 24    12 51 09.5 -24 41 49   0.4161  1.3838   154.4    18.1    21.4
    2023 03 25    12 50 43.0 -24 30 02   0.4061  1.3765   155.3    17.6    21.3
    2023 03 26    12 50 14.1 -24 17 03   0.3962  1.3692   156.2    17.1    21.2
    ...
    2023 04 01    12 46 32.3 -22 29 43   0.3393  1.3254   161.7    13.7    20.7
    ...
    2023 04 09    12 39 28.6 -18 23 26   0.2712  1.2668   166.8    10.4    20.0
    ...
    2023 04 24    12 20 06.4 -01 20 58   0.1705  1.1587   151.9    24.1    19.2
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-F135
    


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