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  • MPEC 2020-H241 : 2020 HG9

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    M.P.E.C. 2020-H241                               Issued 2020 April 30, 21:05 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
    
                                    2020 HG9                                 
    
    
    Observations:
         K20H09G  C2020 04 28.54730216 20 55.770-15 51 50.56         20.0 GVEH241F51
         K20H09G* C2020 04 28.55892816 20 53.562-15 51 41.43         20.47wUEH241F51
         K20H09G  C2020 04 28.57048716 20 51.346-15 51 32.44         20.48wUEH241F51
         K20H09G  C2020 04 29.33236 16 18 41.45 -15 41 46.8                VEH241I52
         K20H09G  C2020 04 29.33421 16 18 41.06 -15 41 45.5                VEH241I52
         K20H09G  C2020 04 29.33497 16 18 40.89 -15 41 44.7          20.3 GVEH241I52
         K20H09G  C2020 04 29.33683 16 18 40.49 -15 41 43.6          19.9 GVEH241I52
         K20H09G  C2020 04 29.45033716 18 20.155-15 39 59.43         20.05wUEH241F51
         K20H09G  C2020 04 29.46066116 18 17.979-15 39 51.35         20.20wUEH241F51
         K20H09G  C2020 04 29.47106516 18 15.782-15 39 43.00         20.12wUEH241F51
         K20H09G KC2020 04 29.59544616 17 51.70 -15 36 48.2          20.3 GVEH241474
         K20H09G KC2020 04 29.59896616 17 50.97 -15 36 45.1          20.4 GVEH241474
         K20H09G KC2020 04 29.60248616 17 50.21 -15 36 42.2          20.0 GVEH241474
         K20H09G IC2020 04 30.09080416 16 14.55 -15 31 12.5          20.6 GVEH241L01
         K20H09G IC2020 04 30.09316516 16 14.12 -15 31 09.6          20.4 GVEH241L01
         K20H09G bC2020 04 30.09551516 16 13.56 -15 31 07.7          20.5 GVEH241L01
         K20H09G  C2020 04 30.30124 16 15 35.34 -15 27 53.8          20.6 GVEH241I52
         K20H09G  C2020 04 30.30726 16 15 33.97 -15 27 48.3          20.5 GVEH241I52
         K20H09G  C2020 04 30.31164 16 15 32.96 -15 27 44.7          19.6 GVEH241I52
         K20H09G  C2020 04 30.31475 16 15 32.27 -15 27 42.0          19.8 GVEH241I52
         K20H09G  C2020 04 30.44610316 15 05.248-15 25 31.49         20.06wUEH241F51
         K20H09G  C2020 04 30.45127316 15 04.046-15 25 27.02         20.02wUEH241F51
         K20H09G  C2020 04 30.45643816 15 02.828-15 25 22.34         19.95wUEH241F51
         K20H09G  C2020 04 30.46162316 15 01.605-15 25 17.80         20.13wUEH241F51
    
    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.
    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, K. Chambers, T. de Boer, L. Denneau, J. Fairlamb, H. 
       Flewelling, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  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.  1.0-m reflector + CCD.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector + 
       CCD.
    
    Orbital elements:
    2020 HG9                                                 Earth MOID = 0.0031 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Pan
    M 279.01377              (2000.0)            P               Q
    n   1.22687640     Peri.  308.97864     +0.97247913     -0.23138091
    a   0.8641759      Node    64.41509     +0.22204005     +0.88482997
    e   0.4185062      Incl.    1.73672     +0.07058720     +0.40439930
    P   0.80           H   23.2           G   0.15           U   8
    Residuals in seconds of arc
    200428 F51  0.2-  0.0     200429 F51  0.0   0.0     200430 I52  0.0   0.0
    200428 F51  0.1+  0.1+    200429 F51  0.1+  0.1+    200430 I52  0.0   0.3+
    200428 F51  0.1+  0.0     200429 474  0.1+  0.3-    200430 I52  0.2-  0.1+
    200429 I52  0.3+  0.1-    200429 474  0.2+  0.1-    200430 I52  0.1+  0.1+
    200429 I52  0.1+  0.3-    200429 474  0.1-  0.2-    200430 F51  0.0   0.1+
    200429 I52  0.1-  0.1-    200430 L01  1.1-  0.5-    200430 F51  0.1+  0.0
    200429 I52  0.3-  0.4-    200430 L01  0.2+  0.2+    200430 F51  0.1+  0.0
    200429 F51  0.0   0.1+    200430 L01  0.5-  0.0     200430 F51  0.0   0.0
    
    Ephemeris:
    2020 HG9                 a,e,i = 0.86, 0.42, 2                   q = 0.5025
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 03 31    16 34 01.3 -17 57 56   0.3406  1.2095   120.8    45.2    23.0
    ...
    2020 04 15    16 38 21.0 -17 27 40   0.2297  1.1758   134.5    37.5    21.9
    ...
    2020 04 23    16 32 07.1 -16 44 48   0.1735  1.1501   143.8    31.1    21.0
    ...
    2020 04 29    16 19 39.7 -15 45 25   0.1336  1.1273   152.5    24.3    20.2
    2020 04 30    16 16 34.0 -15 31 33   0.1271  1.1232   154.2    23.0    20.1
    2020 05 01    16 13 05.0 -15 16 04   0.1207  1.1190   156.0    21.5    19.9
    ...
    2020 05 07    15 40 23.4 -12 48 33   0.08447 1.0920   168.7    10.4    18.7
    ...
    2020 05 15    13 43 30.2 -02 29 12   0.04639 1.0512   149.7    29.1    17.9
    ...
    2020 05 30    07 42 55.9 +20 54 57   0.07874 0.9598    45.1   131.5    23.5
    
    M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-H241
    


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