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  • MPEC 2022-T107 : COMET P/2007 A2 = P/2022 S2 (Christensen)

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    M.P.E.C. 2022-T107                              Issued 2022 October 8, 05:30 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
    
                    COMET P/2007 A2 = P/2022 S2 (Christensen)                
    
         E. Schwab reports the recovery of comet P/2007 A2 (Christensen) in images
    taken Sep. 27 and Oct. 1 UT from Calar Alto-Schmidt (Z84).
    
    Observations:
        PK22S020*2C2022 09 27.17130 08 51 05.35 +21 20 18.3          21.0 GVET107Z84
        PK22S020 2C2022 09 27.18063 08 51 06.07 +21 20 11.8          20.6 GVET107Z84
        PK22S020 2C2022 09 27.18996 08 51 06.92 +21 20 05.5          20.5 GVET107Z84
        PK22S020 2C2022 10 01.17130308 56 36.58 +20 36 35.9          20.8 GVET107Z84
        PK22S020 2C2022 10 01.18063508 56 37.25 +20 36 30.2          20.8 GVET107Z84
        PK22S020 2C2022 10 01.18996808 56 38.04 +20 36 23.5          20.9 GVET107Z84
    
    Observer details:
    Z84 Calar Alto-Schmidt.  Observer E. Schwab.  Measurers E. Schwab, R. Kresken,
        M. Micheli.  0.8-m f/3 Schmidt + CCD.
    
    Orbital elements:
        P/2007 A2 (Christensen)                                                     
    Epoch 2022 Aug. 9.0 TT = JDT 2459800.5                                          
    T 2022 Nov. 27.52482 TT                                 Rudenko                 
    q   2.7984561            (2000.0)            P               Q                  
    n   0.06181642     Peri.  186.69411     -0.59973717     -0.70280189             
    a   6.3348081      Node   300.91220     +0.75329344     -0.33457428             
    e   0.5582414      Incl.   26.48394     +0.26993391     -0.62779738             
    P  15.9                                                                         
    From 96 observations 2007 Jan. 10-2022 Oct. 1, mean residual 0".9.              
                                                                                    
    Ephemeris:
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
    2022 09 08    08 22 37.8 +24 38 30   3.5168  2.8656    43.1    13.9  20.8
    ...
    2022 09 23    08 45 09.9 +22 05 05   3.3497  2.8432    52.0    16.1  20.7
    ...
    2022 10 01    08 56 22.3 +20 38 31   3.2538  2.8330    56.8    17.2  20.6
    ...
    2022 10 07    09 04 21.6 +19 31 42   3.1792  2.8263    60.6    17.9  20.5
    2022 10 08    09 05 39.3 +19 20 25   3.1666  2.8252    61.2    18.1  20.5
    2022 10 09    09 06 56.4 +19 09 06   3.1539  2.8242    61.9    18.2  20.5
    ...
    2022 10 15    09 14 24.8 +18 00 20   3.0768  2.8183    65.8    18.8  20.4
    ...
    2022 10 23    09 23 43.2 +16 26 41   2.9715  2.8117    71.1    19.6  20.4
    ...
    2022 11 07    09 38 51.8 +13 26 22   2.7691  2.8029    81.7    20.5  20.2
    
    M. P. C. Staff               (C) Copyright 2022 MPC           M.P.E.C. 2022-T107
    


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