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  • MPEC 2019-A166: COMET P/2019 A3 (PANSTARRS)

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    M.P.E.C. 2019-A166                               Issued 2019 Jan. 10, 20:44 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/2019 A3 (PANSTARRS)
    
         This object was reported as a comet by R. Weryk and R. Wainscoat (F51),
    who described a stacked image as having a FWHM of ~1".9 (compared to stellar
    FWHM of 1".1 to 1".6).  R. Weryk (568, Jan.4) then reported that the object
    had a FWHM of 1".5 (compared to 0".65 for nearby stars) and a 3" tail towards
    the northeast.  Weryk and Wainscoat (568, Jan. 10) reported a 1".1 FWHM
    (nearby stars 0".60 +/- 0".02) and a 6" tail to the northeast.
    
    Observations:
        PK19A030  C2018 08 08.59515101 45 29.646-00 42 56.30         23.8 GVEA166F51
        PK19A030  C2018 08 08.60228801 45 29.883-00 42 53.83         22.9 GVEA166F51
        PK19A030  C2018 08 08.60942601 45 30.102-00 42 51.89         23.4 GVEA166F51
        PK19A030  C2018 08 08.61658201 45 30.321-00 42 49.95         23.3 GVEA166F51
        PK19A030  C2018 08 11.59551901 46 59.157-00 28 24.96         23.8 GVEA166F51
        PK19A030  C2018 08 11.60344901 46 59.355-00 28 23.21         22.2 GVEA166F51
        PK19A030  C2018 08 11.61140501 46 59.569-00 28 20.62         22.5 GVEA166F51
        PK19A030  C2018 08 11.61937501 46 59.764-00 28 18.43         22.4 GVEA166F51
        PK19A030  C2018 08 21.57665301 50 14.305+00 14 42.74         23.5 GVEA166F51
        PK19A030  C2018 08 21.59120301 50 14.419+00 14 46.19         22.7 GVEA166F51
        PK19A030  C2018 10 10.46372 01 24 43.473+02 36 22.75         21.4 wUEA166F52
        PK19A030  C2018 10 10.47617 01 24 42.716+02 36 24.72         21.3 wUEA166F52
        PK19A030  C2018 10 10.48861 01 24 41.911+02 36 26.65         21.2 wUEA166F52
        PK19A030 KC2018 10 18.43177301 16 38.257+02 59 55.43         23.5 GVEA166F52
        PK19A030  C2018 11 13.22991900 56 07.504+04 48 11.67         23.5 GVEA166F52
        PK19A030  C2018 11 13.24365400 56 07.061+04 48 15.17         22.7 GVEA166F52
        PK19A030  C2018 11 13.25736900 56 06.627+04 48 19.95         22.9 GVEA166F52
        PK19A030* C2019 01 03.26880 01 06 49.184+11 01 03.54         21.9 wUEA166F51
        PK19A030  C2019 01 03.28215 01 06 49.818+11 01 10.62         21.8 wUEA166F51
        PK19A030  C2019 01 03.29550 01 06 50.438+11 01 17.51         21.5 wUEA166F51
        PK19A030 ^C2019 01 04.28487301 07 39.198+11 10 05.23         21.44GVEA166568
        PK19A030 ^C2019 01 04.28605201 07 39.257+11 10 05.80         21.30GVEA166568
        PK19A030 ^C2019 01 04.28723101 07 39.310+11 10 06.43         21.52GVEA166568
        PK19A030 KC2019 01 06.74738001 09 45.30 +11 32 07.6          21.3 GVEA166L01
        PK19A030 KC2019 01 06.75049101 09 45.46 +11 32 08.9          21.3 GVEA166L01
        PK19A030 KC2019 01 06.75555201 09 45.78 +11 32 10.8          21.2 GVEA166L01
        PK19A030 1C2019 01 08.07116 01 10 55.72 +11 44 04.3                LEA166658
        PK19A030 1C2019 01 08.07340 01 10 55.83 +11 44 05.3                LEA166658
        PK19A030 1C2019 01 08.07791 01 10 56.07 +11 44 07.5                LEA166658
        PK19A030 1C2019 01 08.08015 01 10 56.21 +11 44 08.7                LEA166658
        PK19A030 1C2019 01 08.08242 01 10 56.29 +11 44 09.8                LEA166658
        PK19A030 ^C2019 01 10.22676301 12 54.041+12 03 41.47         21.93GVEA166568
        PK19A030 ^C2019 01 10.22794201 12 54.103+12 03 42.13         21.95GVEA166568
        PK19A030 ^C2019 01 10.22912101 12 54.162+12 03 42.73         22.16GVEA166568
    
    Observer details:
    568 Mauna Kea.  Observers R. Wainscoat, C. Wipper, A. Petric, D. Woodworth,
        S. Prunet.  Measurers R. Weryk, R. Wainscoat.  3.6-m Canada-France-Hawaii
        Telescope + CCD.
    658 National Research Council of Canada.  Observer D. D. Balam.  1.82-m
        reflector + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
        E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
        Y. Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, L. Denneau,
        J. Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier.  1.8-m
        Ritchey-Chretien + CCD.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, T. Dukes, T. Lowe,
        A. Schultz, M. Willman, K. Chambers, E. Magnier.  Measurers K. Chambers,
        S. Chastel, L. Denneau, H. Flewelling, M. Huber, E. Magnier,
        Y. Ramanjooloo, R. Wainscoat, C. Waters, R. Weryk.  1.8-m
        Ritchey-Chretien + CCD.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
        + CCD.
    
    Orbital elements:
        P/2019 A3 (PANSTARRS)
    Epoch 2018 July 21.0 TT = JDT 2458320.5
    T 2018 Aug. 1.80069 TT                                  MPCW
    q   2.3134204            (2000.0)            P               Q
    n   0.17656580     Peri.  325.47270     +0.98790878     +0.07103334
    a   3.1467699      Node    31.33334     +0.02450961     +0.80612924
    e   0.2648270      Incl.   15.36716     -0.15308666     +0.58746056
    P   5.58
    From 34 observations 2018 Aug. 8-2019 Jan. 10, mean residual 0".3.
    
        P/2019 A3 (PANSTARRS)
    Epoch 2024 Feb. 20.0 TT = JDT 2460360.5
    T 2024 Mar. 2.59848 TT                                  MPCW
    q   2.3071577            (2000.0)            P               Q
    n   0.17681591     Peri.  325.71282     +0.98816317     +0.06758682
    a   3.1438017      Node    31.29337     +0.02730017     +0.80591071
    e   0.2661249      Incl.   15.37486     -0.15095775     +0.58816659
    P   5.57
    From 34 observations 2018 Aug. 8-2019 Jan. 10, mean residual 0".3.
    
        P/2019 A3 (PANSTARRS)
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5
    T 2018 Aug. 1.82014 TT                                  MPCW
    q   2.3133308            (2000.0)            P               Q
    n   0.17650523     Peri.  325.47488     +0.98791278     +0.07100497
    a   3.1474898      Node    31.33265     +0.02452176     +0.80613853
    e   0.2650236      Incl.   15.36586     -0.15305892     +0.58745124
    P   5.58
    From 34 observations 2018 Aug. 8-2019 Jan. 10, mean residual 0".3.
    
    Ephemeris:
        P/2019 A3 (PANSTARRS)
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
    2018 12 11    00 53 34.6 +07 48 31   1.8250  2.4323   116.7    21.2
    ...
    2018 12 26    01 00 46.2 +09 49 19   2.0304  2.4590   103.9    22.8
    ...
    2019 01 03    01 06 36.2 +10 58 41   2.1459  2.4742    97.5    23.2
    ...
    2019 01 09    01 11 46.1 +11 52 31   2.2340  2.4859    92.9    23.3
    2019 01 10    01 12 41.4 +12 01 38   2.2488  2.4879    92.1    23.3
    2019 01 11    01 13 37.7 +12 10 46   2.2636  2.4899    91.4    23.3
    ...
    2019 01 17    01 19 35.5 +13 06 15   2.3527  2.5020    87.0    23.1
    ...
    2019 01 25    01 28 21.2 +14 21 35   2.4715  2.5186    81.3    22.7
    ...
    2019 02 09    01 46 56.4 +16 45 05   2.6917  2.5511    71.2    21.5
    
    Gareth V. Williams           (C) Copyright 2019 MPC           M.P.E.C. 2019-A166
    

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