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  • MPEC 2023-E85 : 2023 EF1

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    M.P.E.C. 2023-E85                                Issued 2023 March 15, 11:30 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
    
                                    2023 EF1                                 
    
    
    Observations:
         K23E01F*1C2023 03 13.17390209 45 15.282+07 04 02.82         21.39GVEE085G96
         K23E01F 1C2023 03 13.17949209 45 17.910+07 03 41.69               VEE085G96
         K23E01F 1C2023 03 13.18508009 45 20.596+07 03 20.20               VEE085G96
         K23E01F 1C2023 03 13.19064809 45 23.112+07 02 58.20               VEE085G96
         K23E01F KC2023 03 13.26935609 46 00.620+06 57 51.80         19.78GVEE085I52
         K23E01F KC2023 03 13.27364409 46 02.600+06 57 34.16         20.74GVEE085I52
         K23E01F KC2023 03 13.27791109 46 04.620+06 57 17.50         20.86GVEE085I52
         K23E01F |C2023 03 14.07772 09 52 54.08 +06 07 17.3          20.4 VuEE085807
         K23E01F |C2023 03 14.08538 09 52 57.71 +06 06 48.6          20.3 VuEE085807
         K23E01F |C2023 03 14.09303 09 53 01.25 +06 06 18.8          20.4 VuEE085807
         K23E01F KC2023 03 14.24382 09 54 14.08 +05 54 37.5          20.6 VqEE085734
         K23E01F KC2023 03 14.24912 09 54 16.59 +05 54 17.1          21.0 VqEE085734
         K23E01F KC2023 03 14.25176 09 54 17.83 +05 54 06.7          20.0 VqEE085734
         K23E01F KC2023 03 14.25423 09 54 18.95 +05 53 57.3          20.8 VqEE085734
         K23E01F |C2023 03 15.09703 10 01 20.79 +05 02 14.0          20.5 VuEE085807
         K23E01F |C2023 03 15.09896 10 01 21.75 +05 02 07.9          21.0 VuEE085807
         K23E01F |C2023 03 15.10089 10 01 22.56 +05 01 58.7          20.5 VuEE085807
         K23E01F KC2023 03 15.12161410 01 33.45 +04 58 42.4          20.6 GVEE085H21
         K23E01F KC2023 03 15.12440910 01 34.75 +04 58 31.7          20.5 GVEE085H21
         K23E01F KC2023 03 15.12720410 01 36.04 +04 58 21.2          20.5 GVEE085H21
         K23E01F KC2023 03 15.12999910 01 37.31 +04 58 10.8          20.5 GVEE085H21
         K23E01F KC2023 03 15.13279410 01 38.58 +04 58 00.4          20.7 GVEE085H21
         K23E01F KC2023 03 15.13558910 01 39.88 +04 57 49.9          20.7 GVEE085H21
    
    Observer details:
    734 Farpoint Observatory, Eskridge.  Observers D. Cromer, G. Hug, D. Goodin,
        R. Valentine.  Measurer D. Cromer.  0.70-m f/3.0 reflector + CCD.
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
        Horn.  0.61-m f/6.5 Dall-Kirkham Astrograph + CCD.
    G96 Mt. Lemmon Survey.  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.  1.5-m reflector + 10K
        CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer H. Groeller.  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.
    
    Orbital elements:
    2023 EF1                                                 Earth MOID = 0.0646 AU
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Veres                   
    M 359.58585              (2000.0)            P               Q                  
    n   0.34798862     Peri.  180.63601     -0.89621661     -0.44343672             
    a   2.0018246      Node   333.02937     +0.40713329     -0.81086528             
    e   0.4734331      Incl.    1.59652     +0.17617681     -0.38191802             
    P   2.83           H   24.89          G   0.15           U   8                  
    Residuals in seconds of arc
    230313 G96  0.7+  0.9-    230314 807 (0.7+  0.7+)   230315 807 (0.3+  0.9-)
    230313 G96  0.1+  0.3-    230314 807  0.3+  0.3+    230315 H21  0.1-  0.1+
    230313 G96  0.4+  0.1-    230314 734  0.2-  0.1-    230315 H21  0.1+  0.0
    230313 G96  1.7-  0.4-    230314 734  0.2+  0.0     230315 H21  0.2+  0.0
    230313 I52  0.6+  0.6+    230314 734  0.2+  0.2-    230315 H21  0.1-  0.2+
    230313 I52  0.2-  0.2-    230314 734  0.3-  0.0     230315 H21  0.3-  0.3+
    230313 I52  0.3-  0.2-    230315 807  0.1+  0.2-    230315 H21  0.0   0.3+
    230314 807  0.1-  0.1-    230315 807 (1.4+  1.0+)
    
    Ephemeris:
    2023 EF1                 a,e,i = 2.00, 0.47, 2                   q = 1.0541
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 02 13    06 24 18.2 +26 58 14   0.1121  1.0650   131.6    43.9    22.0
    ...
    2023 02 28    07 51 05.6 +20 04 16   0.08501 1.0543   137.1    39.7    21.2
    ...
    2023 03 08    08 59 34.3 +12 42 37   0.08010 1.0601   146.6    31.0    20.9
    ...
    2023 03 14    09 52 12.4 +06 11 19   0.08319 1.0696   154.5    23.6    20.7
    2023 03 15    10 00 31.2 +05 07 26   0.08432 1.0716   155.7    22.4    20.7
    2023 03 16    10 08 37.9 +04 04 53   0.08562 1.0738   156.9    21.3    20.7
    ...
    2023 03 22    10 52 21.3 -01 28 42   0.09680 1.0888   162.3    16.1    20.9
    ...
    2023 03 30    11 36 43.8 -06 42 02   0.1196  1.1148   165.9    12.6    21.3
    ...
    2023 04 14    12 27 32.1 -11 28 48   0.1813  1.1789   165.2    12.5    22.3
    
    M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-E85
    


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