• MPC Preparation (Info)

  • MPEC 2021-X37 : 2021 WC6

    The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.

    A form allowing access to any MPEC is at the bottom of this page.


    Read MPEC 2021-X36 Read MPEC 2021-X38


    M.P.E.C. 2021-X37                              Issued 2021 December 2, 08:19 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 WC6                                 
    
    
    Observations:
         K21W06C* C2021 11 29.38997505 31 32.01 +17 09 28.0          20.60GVEX037G96
         K21W06C  C2021 11 29.39510605 31 32.25 +17 09 16.9          21.46GVEX037G96
         K21W06C  C2021 11 29.40022605 31 32.50 +17 09 05.4          21.35GVEX037G96
         K21W06C KC2021 11 29.49175805 31 36.93 +17 05 41.5          21.27GVEX037I52
         K21W06C KC2021 11 29.49306105 31 37.05 +17 05 38.1          21.22GVEX037I52
         K21W06C KC2021 11 29.50085605 31 37.42 +17 05 19.9                VEX037I52
         K21W06C KC2021 11 30.22034705 32 23.61 +16 38 58.1          21.39GVEX037I52
         K21W06C KC2021 11 30.22226505 32 23.77 +16 38 52.9          21.98GVEX037I52
         K21W06C KC2021 11 30.22651505 32 23.92 +16 38 43.7          21.49GVEX037I52
         K21W06C KC2021 11 30.22843405 32 24.04 +16 38 39.5          22.67GVEX037I52
         K21W06C KC2021 12 01.35829505 33 26.79 +15 57 07.7          21.00GVEX037I52
         K21W06C KC2021 12 01.36031805 33 26.85 +15 57 03.2          20.56GVEX037I52
         K21W06C KC2021 12 01.36234105 33 26.92 +15 56 58.7          21.03GVEX037I52
         K21W06C KC2021 12 02.24844405 34 17.01 +15 24 21.1          20.84GVEX037I52
         K21W06C KC2021 12 02.25124505 34 17.08 +15 24 13.8          21.03GVEX037I52
         K21W06C KC2021 12 02.25155105 34 16.26 +15 24 09.7          21.8 VuEX037H21
         K21W06C KC2021 12 02.25404405 34 17.22 +15 24 07.8          21.70GVEX037I52
         K21W06C KC2021 12 02.25684605 34 17.35 +15 24 01.0          21.57GVEX037I52
         K21W06C KC2021 12 02.25714605 34 16.49 +15 23 56.9          21.6 VuEX037H21
    
    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.
    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.  Observers K. W. Wierzchos, 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, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.
    
    Orbital elements:
    2021 WC6                                                 Earth MOID = 0.2183 AU
    Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Bell                    
    M  17.82032              (2000.0)            P               Q                  
    n   0.40614551     Peri.  196.33685     +0.21599433     -0.96965255             
    a   1.8058497      Node   241.31321     +0.90979992     +0.24245569             
    e   0.3351804      Incl.    7.50258     +0.35441578     -0.03145095             
    P   2.43           H   23.68          G   0.15           U   8                  
    Residuals in seconds of arc
    211129 G96  0.2-  0.1-    211130 I52  0.6+  0.0     211202 I52  0.5-  0.2+
    211129 G96  0.2-  0.1+    211130 I52  0.2-  0.0     211202 H21  0.3+  0.2-
    211129 G96  0.0   0.0     211130 I52  0.3+  0.0     211202 I52  0.1-  0.2+
    211129 I52  0.3-  0.6+    211201 I52  0.3+  0.0     211202 I52  0.0   0.4-
    211129 I52  0.5+  0.1+    211201 I52  0.1-  0.1-    211202 H21  0.3+  0.7-
    211129 I52  0.0   0.5-    211201 I52  0.2-  0.1-
    211130 I52  0.3-  1.0+    211202 I52  0.2+  1.3+
    
    Ephemeris:
    2021 WC6                 a,e,i = 1.81, 0.34, 8                   q = 1.2006
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 11 02    04 48 24.9 +30 15 05   0.2950  1.2438   144.3    27.8    22.7
    ...
    2021 11 17    05 15 47.0 +24 13 31   0.2461  1.2157   154.6    20.4    22.1
    ...
    2021 11 25    05 26 42.9 +19 48 09   0.2304  1.2064   160.2    16.1    21.8
    ...
    2021 12 01    05 33 06.8 +16 10 32   0.2235  1.2023   163.6    13.4    21.6
    2021 12 02    05 34 02.2 +15 33 43   0.2228  1.2018   164.1    13.0    21.6
    2021 12 03    05 34 55.4 +14 56 56   0.2222  1.2014   164.5    12.7    21.6
    ...
    2021 12 09    05 39 33.6 +11 20 33   0.2213  1.2006   165.6    11.8    21.5
    ...
    2021 12 17    05 44 27.8 +07 01 09   0.2267  1.2033   163.6    13.3    21.6
    ...
    2022 01 01    05 52 35.9 +01 31 21   0.2556  1.2199   155.1    19.9    22.1
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X37
    


    Read MPEC 2021-X36 Read MPEC 2021-X38


    MPEC number:

    Enter an MPEC number in one of the following forms:

    • 1997-B01 (the full form)
    • J97B01 (the packed version of the full form)
    • B01 (the abbreviated form)