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  • MPEC 2021-W107 : 2021 WN2

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    M.P.E.C. 2021-W107                            Issued 2021 November 29, 11:52 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
    
                                    2021 WN2                                 
    
    
    Observations:
         K21W02N* C2021 11 28.50245307 29 54.27 +26 11 55.2          20.41GVEW107G96
         K21W02N  C2021 11 28.50763207 30 01.97 +26 11 51.7          20.63GVEW107G96
         K21W02N  C2021 11 28.51387307 30 11.31 +26 11 46.5          20.28GVEW107G96
         K21W02N  C2021 11 28.51905407 30 19.05 +26 11 43.0          19.89GVEW107G96
         K21W02N mC2021 11 28.53765007 30 47.12 +26 11 27.5          20.29GVEW107G96
         K21W02N KC2021 11 28.53821907 30 48.01 +26 11 26.6          20.21GVEW107I52
         K21W02N mC2021 11 28.53876807 30 48.82 +26 11 26.7          20.45GVEW107G96
         K21W02N mC2021 11 28.53918207 30 49.46 +26 11 26.2          20.39GVEW107G96
         K21W02N KC2021 11 28.53920507 30 49.52 +26 11 25.9          19.94GVEW107I52
         K21W02N KC2021 11 28.54019307 30 51.03 +26 11 25.7          20.25GVEW107I52
         K21W02N KC2021 11 28.54117907 30 52.55 +26 11 24.0          20.02GVEW107I52
         K21W02N KC2021 11 29.04090 07 45 53.80 +26 03 51.3                VEW107I93
         K21W02N KC2021 11 29.04468 07 46 00.61 +26 03 47.8          19.6 GVEW107I93
         K21W02N KC2021 11 29.04839 07 46 07.28 +26 03 44.5          19.2 GVEW107I93
         K21W02N mC2021 11 29.31348107 54 59.86 +25 57 54.9          19.93GVEW107I52
         K21W02N mC2021 11 29.31364707 55 00.18 +25 57 54.4          21.72GVEW107I52
         K21W02N mC2021 11 29.31381207 55 00.55 +25 57 54.5          20.95GVEW107I52
         K21W02N mC2021 11 29.31397807 55 00.77 +25 57 55.4          20.30GVEW107I52
    
    Observer details:
    G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  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, D. Rankin, R. L. Seaman, F. C.
        Shelly, K. W. Wierzchos.  1.5-m reflector + 10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer K. W. Wierzchos.
        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, D.
        Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.
    I93 St Pardon de Conques.  Observer F. Losse.  0.40-m f/3.7 reflector + CCD.
    
    Orbital elements:
    2021 WN2                                                 Earth MOID = 0.0023 AU
    Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
    M 340.05883              (2000.0)            P               Q                  
    n   0.95359283     Peri.  125.96208     -0.98413473     -0.17738985             
    a   1.0222585      Node    43.82045     +0.16115184     -0.90177455             
    e   0.2733500      Incl.    0.28279     +0.07422211     -0.39412625             
    P   1.03           H   26.82          G   0.15           U   8                  
    Residuals in seconds of arc
    211128 G96  0.1+  0.2+    211128 G96  0.5-  0.3+    211129 I93  0.0   0.1-
    211128 G96  0.0   0.3+    211128 G96  0.3-  0.1+    211129 I93  0.1-  0.3-
    211128 G96  0.1+  0.3-    211128 I52  0.0   0.1-    211129 I52  0.0   0.1-
    211128 G96  0.3-  0.2+    211128 I52  0.1+  0.5+    211129 I52  0.1-  0.4-
    211128 G96  0.5-  0.1+    211128 I52  0.4+  0.2-    211129 I52  0.6+  0.1-
    211128 I52  0.2-  0.4-    211129 I93  0.1-  0.2+    211129 I52  0.8-  1.0+
    
    Ephemeris:
    2021 WN2                 a,e,i = 1.02, 0.27, 0                   q = 0.7428
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 10 30    05 07 05.1 +22 48 54   0.1796  1.1342   138.7    35.3    24.8
    ...
    2021 11 14    05 34 24.7 +23 51 54   0.09664 1.0721   147.4    29.8    23.2
    ...
    2021 11 22    06 05 19.0 +24 59 52   0.05636 1.0361   148.4    30.0    22.0
    ...
    2021 11 28    07 17 32.3 +26 13 27   0.02864 1.0082   138.1    40.8    20.7
    2021 11 29    07 44 24.6 +26 06 51   0.02455 1.0034   133.1    45.8    20.5
    2021 11 30    08 21 00.7 +25 27 49   0.02084 0.9987   125.9    53.1    20.4
    ...
    2021 12 06    14 09 37.4 -05 49 38   0.02100 0.9699    42.0   137.2    24.9
    ...
    2021 12 14    16 02 43.3 -17 39 42   0.05677 0.9312    20.0   158.8    31.0
    ...
    2021 12 29    16 43 48.3 -20 45 51   0.1377  0.8606    25.0   151.1    30.8
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-W107
    


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