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  • MPEC 2021-S143 : 2021 SE2

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    M.P.E.C. 2021-S143                           Issued 2021 September 30, 14:19 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 SE2                                 
    
    
    Observations:
         K21S02E* C2021 09 28.29301721 13 04.516-02 10 00.27         21.36wUES143F51
         K21S02E  C2021 09 28.30569821 13 07.049-02 09 32.46         20.89wUES143F51
         K21S02E  C2021 09 28.31838021 13 09.570-02 09 04.68         21.26wUES143F51
         K21S02E  C2021 09 28.33104421 13 12.112-02 08 36.62         20.93wUES143F51
         K21S02E KC2021 09 29.08940021 15 53.13 -01 41 18.5          21.0 VuES143H21
         K21S02E KC2021 09 29.10022621 15 55.32 -01 40 55.7          20.8 VuES143H21
         K21S02E mC2021 09 29.15894721 16 07.75 -01 38 45.4                VES143V06
         K21S02E mC2021 09 29.15939421 16 07.83 -01 38 44.5          20.83GVES143V06
         K21S02E mC2021 09 29.15984121 16 07.87 -01 38 44.1          20.20GVES143V06
         K21S02E KC2021 09 29.17885 21 16 11.70 -01 38 03.1          20.4 RoES143691
         K21S02E KC2021 09 29.18661 21 16 13.24 -01 37 47.0                oES143691
         K21S02E KC2021 09 29.19435 21 16 14.79 -01 37 29.6          20.7 RoES143691
         K21S02E KC2021 09 29.85239221 18 32.56 -01 14 20.6          21.0 GVES143104
         K21S02E KC2021 09 29.86870721 18 35.83 -01 13 45.8          20.8 GVES143104
         K21S02E KC2021 09 30.12869121 19 30.11 -01 04 42.6          21.3 VuES143H21
         K21S02E KC2021 09 30.14004621 19 32.33 -01 04 18.5          21.6 VuES143H21
         K21S02E KC2021 09 30.14207421 19 32.72 -01 04 14.7          21.4 VuES143H21
         K21S02E  C2021 09 30.34810521 20 15.178-00 56 58.41         21.40wUES143F51
         K21S02E  C2021 09 30.37792021 20 21.022-00 55 56.86         21.77wUES143F51
         K21S02E  C2021 09 30.39383821 20 24.146-00 55 24.14         21.68wUES143F51
    
    Observer details:
    104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
        P. Bacci, L. Tesi, G. Fagioli.  0.60-m reflector + CCD.
    691 Steward Observatory, Kitt Peak-Spacewatch.  Observer J. V. Scotti.  0.9-m
        f/3 reflector + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, I.
        Smith.  Measurers K. Chambers, S. Chastel, T. de Boer, J. Fairlamb, H.
        Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
        Weryk.  1.8-m Ritchey-Chretien + CCD.
    H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
        Measurers T. Linder, R. Holmes, L. Horn.  0.81-m f/4.0 astrograph + CCD,
        1.3-m f/4.0 astrograph + 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 SE2                                                 Earth MOID = 0.1325 AU
    Epoch 2021 July 5.0 TT = JDT 2459400.5                  Veres                   
    M 343.91494              (2000.0)            P               Q                  
    n   0.31223248     Peri.  350.73798     +0.81502179     +0.57645896             
    a   2.1518764      Node   333.78943     -0.52276066     +0.68791490             
    e   0.4686430      Incl.    7.62503     -0.24992156     +0.44098544             
    P   3.16           H   22.11          G   0.15           U   9                  
    Residuals in seconds of arc
    210928 F51  0.0   0.1+    210929 V06  0.2+  0.5+    210930 H21  0.6+  0.6-
    210928 F51  0.1+  0.0     210929 V06  0.5-  0.0     210930 H21  0.2+  0.2-
    210928 F51  0.1-  0.1-    210929 691  0.1-  0.1-    210930 H21  0.1+  0.6-
    210928 F51  0.0   0.1+    210929 691  0.1-  0.7-    210930 F51  0.1-  0.1+
    210929 H21  0.2-  0.1-    210929 691  0.0   0.2+    210930 F51  0.1+  0.0
    210929 H21  0.2+  0.6-    210929 104  0.7-  0.3+    210930 F51  0.0   0.1-
    210929 V06  0.3+  0.6+    210929 104  0.3-  0.9+
    
    Ephemeris:
    2021 SE2                 a,e,i = 2.15, 0.47, 8                   q = 1.1434
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 08 31    19 15 52.4 -25 20 11   0.1970  1.1450   129.5    42.9    20.5
    ...
    2021 09 15    20 21 48.4 -11 53 05   0.2199  1.1653   132.4    39.6    20.7
    ...
    2021 09 23    20 53 39.4 -05 39 28   0.2453  1.1851   133.3    38.1    21.0
    ...
    2021 09 29    21 15 33.9 -01 44 11   0.2703  1.2037   133.4    37.2    21.2
    2021 09 30    21 19 03.4 -01 08 51   0.2749  1.2071   133.4    37.1    21.2
    2021 10 01    21 22 30.1 -00 34 36   0.2796  1.2106   133.4    36.9    21.3
    ...
    2021 10 07    21 42 18.3 +02 29 09   0.3110  1.2330   133.0    36.3    21.5
    ...
    2021 10 15    22 06 39.3 +05 43 23   0.3598  1.2667   132.1    35.8    21.9
    ...
    2021 10 30    22 47 18.0 +09 54 47   0.4718  1.3399   128.7    35.3    22.6
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-S143
    


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