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  • MPEC 2024-E52 : 2007 EN

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    M.P.E.C. 2024-E52                                 Issued 2024 March 5, 15:26 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
    
                                     2007 EN                                 
    
    
                               Revision to MPEC 2007-E40                            
    
    Additional Observations:
         K07E00N  C2024 02 12.59838211 02 26.280+16 26 05.25         21.72wXEE052F52
         K07E00N  C2024 02 12.61021511 02 25.141+16 25 54.68         21.87wXEE052F52
         K07E00N  C2024 02 12.62200311 02 23.991+16 25 45.05         21.88wXEE052F52
         K07E00N 1C2024 03 05.22550210 12 01.159+08 26 53.70         21.38GVEE052G96
         K07E00N 1C2024 03 05.23063910 12 00.194+08 26 44.59         22.35GVEE052G96
         K07E00N 1C2024 03 05.23575110 11 59.320+08 26 34.69         21.42GVEE052G96
         K07E00N 1C2024 03 05.24085910 11 58.326+08 26 24.76         20.79GVEE052G96
         K07E00N  C2024 03 05.25498210 11 55.631+08 25 57.95         21.2 GVEE052H01
         K07E00N  C2024 03 05.26107010 11 54.494+08 25 46.55         21.0 GVEE052H01
         K07E00N KC2024 03 05.26217810 11 54.366+08 25 44.90         20.81GVEE052I52
         K07E00N KC2024 03 05.26681410 11 53.488+08 25 36.12         21.22GVEE052I52
         K07E00N KC2024 03 05.27145810 11 52.620+08 25 27.52         21.15GVEE052I52
         K07E00N  C2024 03 05.27216110 11 52.441+08 25 25.74         20.8 GVEE052H01
         K07E00N KC2024 03 05.27609410 11 51.752+08 25 18.73         20.50GVEE052I52
         K07E00N  C2024 03 05.27726810 11 51.489+08 25 16.15         20.6 GVEE052H01
    
    Observer details:
    F52 Pan-STARRS 2, Haleakala.  Observers J. Herman, T. Lowe, P. Minguez, A.
        Schultz, I. Smith.  Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
        Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
        Weryk.  1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers T. Beuden, V. F.
        Carvajal, 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, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector +
        10K CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer J. K. Hogan.  Measurers
        T. Beuden, V. F. Carvajal, 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, 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 zero decimals in degrees), reference and Delta-T
    240212 F52   91-   57-    240305 H01  140-   51-    MPO118216   -83.3 days
    
    Orbital elements:
    2007 EN                                                  Earth MOID = 0.3133 AU
    Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
    M 346.58256              (2000.0)            P               Q                  
    n   0.23194288     Peri.  256.36956     -0.54153759     +0.82732904             
    a   2.6235058      Node   338.69287     -0.52012410     -0.46916822             
    e   0.5906726      Incl.   24.24455     -0.66046041     -0.30888160             
    P   4.25           H   21.28          G   0.15           U   1                  
    Residuals in seconds of arc
    070309 G96  0.5+  0.1+    070310 G96  0.1+  0.2-    240305 G96  0.1-  0.1-
    070309 G96  0.2-  0.6-    070312 696  2.2-  0.7-    240305 G96  0.3-  0.4+
    070309 G96  0.1+  0.2+    070312 696  0.6-  1.2-    240305 G96  0.8+  0.1+
    070309 G96  0.7-  0.1-    070313 696  0.7+  1.1+    240305 G96  0.2+  0.3-
    070309 G96  0.4+  0.0     070313 696  0.7+  0.7+    240305 H01  0.2+  0.2-
    070309 G96  0.1+  0.1-    070313 540  0.1-  0.2-    240305 H01  0.1+  0.2-
    070309 G96  0.1-  0.1-    070313 540  0.2+  0.4+    240305 I52  0.3+  0.2-
    070309 G96  0.5-  0.2+    070315 G96  0.3+  0.3-    240305 I52  0.1+  0.3-
    070310 291  0.2+  0.5+    070315 G96  0.2+  0.0     240305 I52  0.1+  0.2-
    070310 291  0.5-  0.5+    070315 G96  0.2+  0.2+    240305 H01  0.3+  0.2-
    070310 291  0.1+  0.8-    070315 G96  0.1-  0.1-    240305 I52  0.0   0.2-
    070310 G96  0.1-  0.4+    240212 F52  0.1+  0.1-    240305 H01  0.3+  0.2-
    070310 G96  0.3+  0.1-    240212 F52  0.3+  0.4-
    070310 G96  0.3-  0.1-    240212 F52  0.1+  0.3+
    
    Ephemeris:
    2007 EN                  a,e,i = 2.62, 0.59, 24                  q = 1.0739
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2024 02 04    11 13 01.3 +18 11 26   0.7793  1.7055   149.9    16.8    22.8
    ...
    2024 02 19    10 50 59.4 +14 41 59   0.6081  1.5892   168.7     7.0    21.7
    ...
    2024 02 27    10 32 22.1 +11 49 45   0.5383  1.5278   176.7     2.1    21.1
    ...
    2024 03 04    10 15 39.4 +09 04 41   0.4971  1.4824   168.8     7.4    21.2
    2024 03 05    10 12 41.4 +08 34 04   0.4912  1.4749   167.2     8.5    21.2
    2024 03 06    10 09 41.1 +08 02 35   0.4856  1.4675   165.6     9.7    21.2
    ...
    2024 03 12    09 51 03.4 +04 36 40   0.4578  1.4231   155.5    16.8    21.2
    ...
    2024 03 20    09 26 06.9 -00 34 06   0.4358  1.3656   141.9    26.7    21.4
    ...
    2024 04 04    08 46 18.6 -10 54 09   0.4306  1.2654   118.9    43.8    21.6
    
    A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-E52
    


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