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  • MPEC 2020-S190 : 2020 SQ4

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    M.P.E.C. 2020-S190                           Issued 2020 September 25, 04:32 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 SQ4                                 
    
    
    Observations:
         K20S04Q* C2020 09 23.29999 23 08 06.04 -06 30 59.8          21.3 GVES190G96
         K20S04Q  C2020 09 23.31021 23 08 08.21 -06 31 24.3                VES190G96
         K20S04Q  C2020 09 23.31585 23 08 09.42 -06 31 37.4          20.9 GVES190G96
         K20S04Q  C2020 09 23.32150 23 08 10.72 -06 31 51.1          21.9 GVES190G96
         K20S04Q  C2020 09 23.39363 23 08 27.70 -06 34 39.0          21.3 GVES190G96
         K20S04Q  C2020 09 23.39508 23 08 28.06 -06 34 42.5          21.6 GVES190G96
         K20S04Q  C2020 09 23.39653 23 08 28.43 -06 34 46.0          21.7 GVES190G96
         K20S04Q  C2020 09 23.39797 23 08 28.81 -06 34 48.8          22.3 GVES190G96
         K20S04Q mC2020 09 24.26575123 15 34.90 -07 23 25.8          20.66GVES190G96
         K20S04Q mC2020 09 24.26719823 15 35.58 -07 23 31.7          20.80GVES190G96
         K20S04Q mC2020 09 24.26864523 15 36.30 -07 23 39.1          20.83GVES190G96
         K20S04Q KC2020 09 24.91070023 24 59.43 -08 29 34.5          19.9 GVES190J95
         K20S04Q KC2020 09 24.94772723 25 37.39 -08 34 39.4          20.2 GVES190J95
         K20S04Q KC2020 09 25.14892523 30 20.80 -09 04 10.8          20.0 VuES190H21
         K20S04Q KC2020 09 25.15183923 30 24.64 -09 04 41.0          20.1 VuES190H21
         K20S04Q KC2020 09 25.15300523 30 41.31 -09 03 29.7          20.22GVES190I52
         K20S04Q KC2020 09 25.15423723 30 42.89 -09 03 43.1          19.93GVES190I52
         K20S04Q KC2020 09 25.15546823 30 44.60 -09 03 56.6          19.72GVES190I52
         K20S04Q KC2020 09 25.15669323 30 31.06 -09 05 32.7          20.1 VuES190H21
         K20S04Q KC2020 09 25.15670023 30 46.20 -09 04 09.8          19.86GVES190I52
    
    Observer details:
    G96 Mt. Lemmon Survey.  Observer T. A. Pruyne.  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.  1.5-m reflector + 10K CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
        astrograph + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer D. Rankin.  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.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2020 SQ4                                                 Earth MOID = 0.0017 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
    M  14.23098              (2000.0)            P               Q                  
    n   0.33460219     Peri.  240.92265     +0.51655624     -0.85625306             
    a   2.0548661      Node   177.97552     +0.79135875     +0.47714045             
    e   0.5890169      Incl.    0.96894     +0.32698774     +0.19790829             
    P   2.95           H   28.91          G   0.15           U   8                  
    Residuals in seconds of arc
    200923 G96  0.0-  0.7+    200923 G96  0.3-  0.5+    200925 H21  0.2+  0.4+
    200923 G96  0.0+  0.0+    200924 G96  0.2-  0.3-    200925 I52  0.9+  0.3+
    200923 G96  0.0-  0.1+    200924 G96  0.2-  0.3+    200925 I52  0.5-  0.1+
    200923 G96  1.1+  0.5-    200924 G96  0.3+  0.6-    200925 I52  0.0-  0.2-
    200923 G96  0.0+  0.1+    200924 J95  0.9-  0.1+    200925 H21  0.4+  0.0-
    200923 G96  0.2-  0.0+    200924 J95  0.2-  0.1-    200925 I52  1.2-  0.2-
    200923 G96  0.3-  0.1-    200925 H21  0.0+  0.0-
    
    Ephemeris:
    2020 SQ4                 a,e,i = 2.05, 0.59, 1                   q = 0.8445
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 08 26    22 53 48.6 -04 28 16   0.2552  1.2624   169.6     8.3    27.0
    ...
    2020 09 10    22 54 37.7 -04 35 17   0.1274  1.1340   175.2     4.3    25.1
    ...
    2020 09 18    22 57 05.1 -05 04 06   0.06546 1.0690   168.2    11.1    23.8
    ...
    2020 09 24    23 13 00.6 -07 00 56   0.02061 1.0231   165.2    14.5    21.3
    2020 09 25    23 26 37.6 -08 32 26   0.01325 1.0158   166.1    13.7    20.3
    2020 09 26    00 14 07.3 -13 27 40   0.0060861.0085   165.3    14.6    18.7
    ...
    2020 10 02    10 39 15.4 +03 05 50   0.03913 0.9669    29.2   149.7    30.2
    ...
    2020 10 10    10 49 15.5 +03 49 44   0.09958 0.9186    34.8   141.7    30.8
    ...
    2020 10 25    11 03 04.6 +03 12 19   0.2183  0.8578    46.2   123.3    30.4
    
    M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-S190
    


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