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  • MPEC 2020-W104 : 2020 WS2

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    M.P.E.C. 2020-W104                            Issued 2020 November 22, 05:35 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 WS2                                 
    
    
    Observations:
         K20W02S* C2020 11 20.44367403 24 16.431-10 42 21.50         20.89wUEW104F51
         K20W02S  C2020 11 20.45603703 24 19.555-10 42 48.05         21.27wUEW104F51
         K20W02S  C2020 11 20.46836103 24 22.680-10 43 14.32         20.54wUEW104F51
         K20W02S 1C2020 11 20.91158 03 26 38.14 -11 00 11.4          21.4 VVEW104033
         K20W02S 1C2020 11 20.91448 03 26 38.97 -11 00 18.0          21.1 VVEW104033
         K20W02S 1C2020 11 20.91738 03 26 39.80 -11 00 24.4          21.1 VVEW104033
         K20W02S 1C2020 11 20.92044 03 26 40.64 -11 00 31.3          21.1 VVEW104033
         K20W02S KC2020 11 21.27379 03 28 32.41 -11 13 43.5          20.4 RoEW104691
         K20W02S KC2020 11 21.28260 03 28 34.94 -11 14 04.3          20.0 RoEW104691
         K20W02S KC2020 11 21.29163 03 28 37.55 -11 14 25.8          21.0 RoEW104691
         K20W02S KC2020 11 21.31283103 28 43.65 -11 15 16.0          20.80GVEW104I52
         K20W02S KC2020 11 21.31436603 28 44.12 -11 15 18.9          20.11GVEW104I52
         K20W02S KC2020 11 21.31590103 28 44.55 -11 15 22.5          19.99GVEW104I52
         K20W02S 1C2020 11 21.90844 03 32 08.87 -11 39 33.2          20.2 GVEW104246
         K20W02S 1C2020 11 21.90874 03 32 08.91 -11 39 34.3                VEW104246
         K20W02S 1C2020 11 21.91411 03 32 10.72 -11 39 47.8                VEW104246
         K20W02S 1C2020 11 21.91494 03 32 10.98 -11 39 48.7          20.1 GVEW104246
         K20W02S 1C2020 11 21.91530 03 32 11.07 -11 39 50.2          19.7 GVEW104246
         K20W02S 2C2020 11 21.91974403 32 14.31 -11 39 48.2          20.5 GVEW104Z84
         K20W02S 2C2020 11 21.92594703 32 16.33 -11 40 03.8          20.3 GVEW104Z84
         K20W02S 2C2020 11 21.93292503 32 18.58 -11 40 21.6          20.3 GVEW104Z84
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
        Hoegner, B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
    246 Klet Observatory-KLENOT.  Observers M. Tichy, J. Ticha.  Measurer M.
        Tichy.  1.06-m f/2.7 reflector + 2048x2048 CCD.
    691 Steward Observatory, Kitt Peak-Spacewatch.  Observer R. A. Mastaler.
        0.9-m f/3 reflector + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
        Willman.  Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
        Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
        R. Wainscoat, R. Weryk.  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.
    Z84 Calar Alto-Schmidt.  Observer E. Schwab.  Measurers E. Schwab, D. Koschny,
        M. Micheli, R. Jehn.  0.8-m f/3 Schmidt + CCD.
    
    Orbital elements:
    2020 WS2                                                 Earth MOID = 0.0139 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Bell                    
    M 358.28061              (2000.0)            P               Q                  
    n   0.21662810     Peri.   11.62928     -0.18508293     -0.97962332             
    a   2.7457407      Node    89.07249     +0.89526090     -0.20080782             
    e   0.6530292      Incl.    4.47363     +0.40528043     -0.00379038             
    P   4.55           H   24.68          G   0.15           U   9                  
    Residuals in seconds of arc
    201120 F51  0.1-  0.1+    201121 691  0.1+  0.1+    201121 246  0.7-  0.1-
    201120 F51  0.0+  0.0-    201121 691  0.1-  0.0-    201121 246  0.1+  0.1-
    201120 F51  0.1+  0.0+    201121 691  0.1-  0.4-    201121 246  0.1-  1.0+
    201120 033  0.5-  0.5-    201121 I52  0.0-  0.3-    201121 246  0.5-  0.4+
    201120 033  0.4-  0.5-    201121 I52  0.3+  0.4+    201121 Z84  0.3+  0.1-
    201120 033  0.2-  0.3-    201121 I52  0.1+  0.4+    201121 Z84  0.4+  0.0+
    201120 033  0.6-  0.3-    201121 246  0.2+  0.2+    201121 Z84  0.2+  0.1-
    
    Ephemeris:
    2020 WS2                 a,e,i = 2.75, 0.65, 4                   q = 0.9527
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 10 23    02 39 52.8 -01 46 02   0.2969  1.2807   162.0    13.9    23.4
    ...
    2020 11 07    02 51 44.1 -05 19 57   0.1807  1.1609   158.4    18.3    22.2
    ...
    2020 11 15    03 05 26.3 -08 01 54   0.1266  1.1036   153.2    23.8    21.5
    ...
    2020 11 21    03 27 04.5 -11 02 03   0.08906 1.0650   148.7    28.8    20.8
    2020 11 22    03 32 40.6 -11 41 49   0.08308 1.0590   147.9    29.7    20.7
    2020 11 23    03 39 11.3 -12 25 49   0.07719 1.0531   147.0    30.7    20.6
    ...
    2020 11 29    04 55 37.3 -19 09 45   0.04514 1.0206   138.5    39.8    19.6
    ...
    2020 12 07    10 19 18.3 -19 25 01   0.03504 0.9861    90.4    87.5    20.5
    ...
    2020 12 22    13 18 12.7 -02 47 02   0.1122  0.9536    71.3   102.3    23.6
    
    M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-W104
    


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