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  • MPEC 2023-S241 : 2018 RW3

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    M.P.E.C. 2023-S241                           Issued 2023 September 27, 14:07 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
    
                                    2018 RW3                                 
    
    
                               Revision to MPEC 2018-R117                           
    
    Additional Observations:
         K18R03W KC2023 09 25.30501420 49 09.217-13 06 15.01         20.01GVES241I52
         K18R03W KC2023 09 25.30998320 49 12.817-13 05 29.40         19.37GVES241I52
         K18R03W KC2023 09 25.31074320 49 13.357-13 05 21.73         19.64GVES241I52
         K18R03W KC2023 09 26.11185820 58 40.937-11 09 11.56         18.63GVES241I52
         K18R03W KC2023 09 26.11292920 58 41.668-11 09 02.12         18.44GVES241I52
         K18R03W KC2023 09 26.11400020 58 42.280-11 08 53.81         19.57GVES241I52
    
    Observer details:
    I52 Steward Observatory, Mt. Lemmon Station.  Observer A. Serrano.  Measurers
        E. J. Christensen, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A. D.
        Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J.
        Leonard, D. Rankin, R. L. Seaman, A. Serrano, F. C. Shelly, K. W.
        Wierzchos.  1.0-m prime focus + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    230925 I52 7.58- 4.47-    230926 I52 7.16- 4.32-    MPO562912   -0.97 days
    
    Orbital elements:
    2018 RW3                                                 Earth MOID = 0.0237 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M  16.52317              (2000.0)            P               Q                  
    n   0.39217732     Peri.  283.78314     +0.14711848     +0.98887991             
    a   1.8484785      Node   354.53537     -0.79620856     +0.10535577             
    e   0.5868642      Incl.   13.19680     -0.58686291     +0.10496037             
    P   2.51           H   22.51          G   0.15           U   0                  
    Residuals in seconds of arc
    180909 703  0.0   0.2+    180910 711  0.2+  0.2-    180921 I52  0.0   0.3-
    180909 703  0.5+  1.2-    180910 711  0.1+  0.3-    180921 H21  0.0   0.1+
    180909 703  0.7+  0.4-    180910 711  0.1-  0.2-    180921 H21  0.0   0.1+
    180909 703  0.8-  0.1+    180910 711  0.5+  0.5-    180921 F65  0.3+  0.0
    180909 I52  0.0   0.1-    180911 I52  0.1+  0.1-    180921 F65  0.5-  0.1+
    180909 I52  0.2+  0.1+    180911 I52  0.1-  0.1-    180928 I52  1.6-  0.1+
    180909 I52  0.1-  0.0     180911 I52  0.0   0.2-    180928 I52  0.5+  0.1+
    180909 I52  0.0   0.1+    180914 T05  0.8+  0.0     180928 I52  0.2+  0.0
    180910 J04  0.1-  0.0     180914 T05  0.5+  0.3-    180928 H21  0.1-  0.1+
    180910 J04  0.2-  0.1+    180914 T05  0.3+  0.8+    180928 H21  0.3+  0.0
    180910 J04  0.2-  0.3+    180914 T05  0.2-  0.3-    180928 H21  0.1-  0.1+
    180910 L01  0.0   0.3-    180915 I52  0.1+  0.3+    180929 H21  0.1-  0.0
    180910 L01  0.1+  0.1+    180915 I52  0.1-  0.1+    180929 H21  0.1+  0.1+
    180910 L01  0.1+  0.1+    180915 I52  0.3-  0.1-    180929 H21  0.2-  0.2-
    180910 I52  0.2+  0.4+    180918 703  0.1-  0.4+    180930 H21  0.1-  0.3-
    180910 I52  0.2+  0.2-    180918 703  0.7+  0.1-    180930 H21  0.1-  0.1+
    180910 I52  0.1+  0.3+    180918 703  0.4+  0.0     180930 H21  0.3-  0.4-
    180910 I52  0.1-  1.5-    180918 703  0.5+  1.3-    181017 H21  0.3+  0.4+
    180910 H36  0.5-  0.6+    180919 A17  0.0   0.4+    181017 H21  0.2-  0.3+
    180910 H36  0.2+  0.4+    180919 A17  0.1+  0.0     181017 H21  0.0   0.4+
    180910 H36  0.7-  0.7+    180919 A17  0.1-  0.1-    181018 V06  0.1+  0.3+
    180910 H36  0.8-  1.1+    180920 H21  0.1+  0.1-    181018 V06  0.3+  0.2-
    180910 711  0.1-  0.2-    180920 H21  0.1+  0.1-    181018 V06  0.4+  0.0
    180910 711  0.0   0.3-    180920 H21  0.2+  0.2-    181018 V06  0.4+  0.2+
    180910 711  0.1-  0.3-    180921 204  0.1+  0.1+    230925 I52  0.6-  0.3-
    180910 711  0.1-  0.3-    180921 204  0.1-  0.2+    230925 I52  0.8-  0.3-
    180910 711  0.0   0.2-    180921 204  0.0   0.0     230925 I52  1.0-  0.4+
    180910 711  0.1-  0.2-    180921 I52  0.4-  0.2-    230926 I52  0.8+  0.0
    180910 711  0.3+  0.4-    180921 I52  0.1+  0.1-    230926 I52  1.4+  0.6+
    180910 711  0.0   0.2-    180921 I52  0.2-  0.8-    230926 I52  0.3+  0.0
    
    Ephemeris:
    2018 RW3                 a,e,i = 1.85, 0.59, 13                  q = 0.7637
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 08 28    12 14 51.0 -27 43 44   0.2511  0.8562    46.3   121.5    24.1
    ...
    2023 09 12    14 51 53.1 -41 22 05   0.1099  0.9686    66.8   107.3    21.7
    ...
    2023 09 20    19 09 15.9 -30 03 58   0.09148 1.0371   108.4    66.8    19.7
    ...
    2023 09 26    20 57 24.1 -11 24 07   0.1273  1.0905   130.9    44.0    19.9
    2023 09 27    21 07 54.9 -09 11 44   0.1358  1.0995   132.9    41.9    20.0
    2023 09 28    21 17 08.3 -07 14 03   0.1447  1.1086   134.6    40.1    20.1
    ...
    2023 10 04    21 54 58.0 +00 46 51   0.2045  1.1632   139.3    34.1    20.8
    ...
    2023 10 12    22 22 45.5 +06 04 46   0.2945  1.2365   139.3    31.8    21.7
    ...
    2023 10 27    22 53 29.9 +10 22 14   0.4838  1.3729   133.6    31.6    23.0
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-S241
    


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