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  • MPEC 2021-T96 : 2021 SZ4

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    M.P.E.C. 2021-T96                               Issued 2021 October 6, 02:27 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 SZ4                                 
    
    
    Observations:
         K21S04Z  C2021 09 04.58029902 15 22.859-05 39 25.04         22.73GVET096F51
         K21S04Z  C2021 09 04.59277802 15 22.449-05 39 30.71         23.20GVET096F51
         K21S04Z  C2021 09 04.60509602 15 22.042-05 39 36.14         22.32GVET096F51
         K21S04Z  C2021 09 04.61679602 15 21.656-05 39 40.98         22.79GVET096F51
         K21S04Z  C2021 09 15.47459302 06 08.086-07 17 20.95         22.32GVET096F52
         K21S04Z  C2021 09 15.48666902 06 07.161-07 17 28.84         21.95GVET096F52
         K21S04Z  C2021 09 15.49867602 06 06.219-07 17 36.44         23.23GVET096F52
         K21S04Z  C2021 09 15.51078202 06 05.273-07 17 44.20         22.11GVET096F52
         K21S04Z* C2021 09 30.46110901 37 05.978-10 28 29.16         21.24wUET096F52
         K21S04Z  C2021 09 30.47193201 37 04.140-10 28 38.96         21.61wUET096F52
         K21S04Z  C2021 09 30.48272001 37 02.302-10 28 48.05         21.02wUET096F52
         K21S04Z  C2021 09 30.49358601 37 00.460-10 28 57.75         21.39wUET096F52
         K21S04Z  C2021 09 30.56778001 36 47.856-10 30 02.71         21.42GVET096F51
         K21S04Z  C2021 09 30.56859801 36 47.725-10 30 03.27         21.48GVET096F51
         K21S04Z KC2021 10 01.38756201 34 29.78 -10 42 07.6          21.37GVET096V06
         K21S04Z KC2021 10 01.38935001 34 29.46 -10 42 08.9          22.84GVET096V06
         K21S04Z KC2021 10 01.39113601 34 29.15 -10 42 10.2          21.61GVET096V06
         K21S04Z KC2021 10 01.39292201 34 28.86 -10 42 12.1          21.24GVET096V06
         K21S04Z KC2021 10 03.44438 01 28 20.35 -11 12 43.3          21.6 RoET096691
         K21S04Z KC2021 10 03.45257 01 28 18.76 -11 12 50.5          21.4 RoET096691
         K21S04Z KC2021 10 03.46076 01 28 17.21 -11 12 58.0          21.3 RoET096691
    
    Observer details:
    691 Steward Observatory, Kitt Peak-Spacewatch.  Observer T. H. Bressi.  0.9-m
        f/3 reflector + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
        Schultz, I. Smith.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
        Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
        Lowe, A. Schultz, I. Smith.  Measurers S. Chastel, M. Huber, Y.
        Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, J. Fairlamb,
        H. Gao, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien + CCD.
    V06 Catalina Sky Survey-Kuiper.  Observer E. J. Christensen.  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.  1.55-m reflector +
        1K CCD.
    
    Orbital elements:
    2021 SZ4                                            PHA, Earth MOID = 0.0343 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M 263.62826              (2000.0)            P               Q                  
    n   0.51428867     Peri.  129.52952     -0.88862795     -0.40683631             
    a   1.5428774      Node    28.43214     +0.14292465     -0.68429878             
    e   0.8078856      Incl.   26.40263     +0.43578999     -0.60516064             
    P   1.92           H   20.48          G   0.15           U   6                  
    Residuals in seconds of arc
    210904 F51  0.1-  0.0     210915 F52  0.1-  0.0     211001 V06  0.2-  0.4-
    210904 F51  0.0   0.1-    210930 F52  0.0   0.2+    211001 V06  0.3-  0.1-
    210904 F51  0.1+  0.1-    210930 F52  0.0   0.1-    211001 V06  0.3-  0.1+
    210904 F51  0.2+  0.3+    210930 F52  0.1-  0.2+    211001 V06  0.1+  0.1-
    210915 F52  0.1-  0.1+    210930 F52  0.0   0.0     211003 691  0.1+  0.2+
    210915 F52  0.1+  0.1-    210930 F51  0.0   0.2-    211003 691  0.3-  0.3+
    210915 F52  0.0   0.0     210930 F51  0.2+  0.0     211003 691  0.1-  0.1+
    
    Ephemeris:
    2021 SZ4                 a,e,i = 1.54, 0.81, 26                  q = 0.2964
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 09 06    02 14 36.3 -05 50 10   1.1078  1.9280   131.3    23.1    23.2
    ...
    2021 09 21    01 58 01.0 -08 20 27   0.8621  1.7936   147.8    17.3    22.3
    ...
    2021 09 29    01 40 59.2 -10 07 14   0.7499  1.7160   156.6    13.4    21.8
    ...
    2021 10 05    01 23 20.2 -11 35 59   0.6772  1.6550   160.9    11.4    21.4
    2021 10 06    01 19 57.0 -11 51 05   0.6661  1.6446   161.2    11.3    21.4
    2021 10 07    01 16 25.9 -12 06 11   0.6554  1.6341   161.3    11.3    21.3
    ...
    2021 10 13    00 52 35.4 -13 34 02   0.5986  1.5695   158.2    13.6    21.1
    ...
    2021 10 21    00 14 13.0 -15 08 56   0.5437  1.4789   146.3    21.9    21.1
    ...
    2021 11 05    22 53 23.9 -15 39 51   0.5039  1.2937   115.9    43.6    21.2
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-T96
    


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