• MPC Preparation (Info)

  • MPEC 2020-C111 : COMET C/2020 B3 (Rankin)

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    Read MPEC 2020-C110


    M.P.E.C. 2020-C111                             Issued 2020 February 6, 20:06 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 C/2020 B3 (Rankin)                         
    
         This object was reported on Jan. 29 UT as a comet by D. Rankin on behalf
    of the Mt. Lemmon Survey (G96), noting a diffuse 12" coma and 9" tail at
    PA 270.  Following it being posted to MPC PCCP, R. Weryk reported on Jan. 30
    his finding prediscovery images taken on Jan. 25 by Pan-STARRS 2 (F52),
    displaying a 3".4 coma.  Additional reports of cometary features are as
    follows:
    
    OC   Date     Reporter           Coma    Tail    PA          Exposures
    Q62  Jan. 29  H. Sato             10"                        14x60s
    W87  Jan. 30  P. Breitenstein                    280
    G96  Jan. 31  D. Rankin           10"     12"    270
    691  Jan. 31  J. V. Scotti         8"                        2x150s
    204  Feb.  2  L. Buzzi            10"                        100x30s
    X02  Feb.  3  E. Guido             5"                        16x120s
    204  Feb.  4  L. Buzzi            10"                        196x20s
    
    Observations:
        CK20B030  C2020 01 25.55330912 21 25.431-08 18 58.85         20.5 GVEC111F52
        CK20B030  C2020 01 25.56506412 21 25.634-08 18 57.56         20.5 GVEC111F52
        CK20B030  C2020 01 25.57681012 21 25.876-08 18 56.40         20.5 GVEC111F52
        CK20B030  C2020 01 25.58863712 21 26.092-08 18 54.89         20.5 GVEC111F52
        CK20B030* C2020 01 29.44428 12 22 36.26 -08 10 01.5          19.3 GVEC111G96
        CK20B030  C2020 01 29.44943 12 22 36.36 -08 10 00.9          19.5 GVEC111G96
        CK20B030  C2020 01 29.45461 12 22 36.44 -08 10 00.2          19.4 GVEC111G96
        CK20B030  C2020 01 29.45977 12 22 36.52 -08 09 59.1          19.4 GVEC111G96
        CK20B030  C2020 01 29.50601 12 22 37.25 -08 09 51.9          19.6 GVEC111G96
        CK20B030  C2020 01 29.52031 12 22 37.45 -08 09 49.8          19.5 GVEC111G96
        CK20B030  C2020 01 29.53485 12 22 37.65 -08 09 47.4          19.5 GVEC111G96
        CK20B030 1C2020 01 29.75247 12 22 41.21 -08 09 09.9                VEC111Q62
        CK20B030 1C2020 01 29.75794 12 22 41.30 -08 09 08.7          19.2 GVEC111Q62
        CK20B030 KC2020 01 30.08058812 22 46.44 -08 08 20.0          19.3 GVEC111C95
        CK20B030 KC2020 01 30.09554312 22 46.66 -08 08 17.8          18.7 GVEC111C95
        CK20B030 KC2020 01 30.11047312 22 46.85 -08 08 15.0          18.7 GVEC111C95
        CK20B030 KC2020 01 30.16788612 22 47.73 -08 08 06.1          19.7 GVEC111L01
        CK20B030 KC2020 01 30.19884612 22 48.25 -08 08 01.3          19.9 GVEC111L01
        CK20B030 KC2020 01 30.26256 12 22 49.37 -08 07 47.4          19.2 VqEC111I47
        CK20B030 KC2020 01 30.27578 12 22 49.58 -08 07 45.6          19.4 VqEC111I47
        CK20B030 KC2020 01 30.27883 12 22 49.60 -08 07 44.2          19.5 RtEC111W87
        CK20B030 KC2020 01 30.28320 12 22 49.67 -08 07 43.6          19.8 RtEC111W87
        CK20B030 KC2020 01 30.28743 12 22 49.70 -08 07 43.3          19.3 VqEC111I47
        CK20B030 KC2020 01 30.28755 12 22 49.74 -08 07 42.9          20.0 RtEC111W87
        CK20B030 KC2020 01 30.29192 12 22 49.80 -08 07 42.0          19.7 RtEC111W87
        CK20B030  C2020 01 31.50776 12 23 07.66 -08 04 18.9          19.4 GVEC111G96
        CK20B030  C2020 01 31.52213 12 23 07.80 -08 04 16.4          19.3 GVEC111G96
        CK20B030  C2020 01 31.53638 12 23 07.98 -08 04 14.1          19.7 GVEC111G96
        CK20B030 KC2020 01 31.53849 12 23 08.11 -08 04 12.4          19.4 RoEC111691
        CK20B030 KC2020 01 31.54367 12 23 08.11 -08 04 12.0          19.2 RoEC111691
        CK20B030 KC2020 01 31.54886 12 23 08.15 -08 04 11.8          19.1 RoEC111691
        CK20B030 KC2020 02 02.17861 12 23 29.94 -07 59 12.1          20.2 GVEC111204
        CK20B030 KC2020 02 02.19887 12 23 30.19 -07 59 08.0                VEC111204
        CK20B030 KC2020 02 02.38001 12 23 32.37 -07 58 31.9          20.0 VqEC111850
        CK20B030 KC2020 02 02.39810 12 23 32.77 -07 58 29.0          19.3 VqEC111850
        CK20B030 KC2020 02 03.19575 12 23 42.42 -07 55 48.8          19.8 GVEC111X02
        CK20B030 KC2020 02 03.21124 12 23 42.57 -07 55 45.1          20.0 GVEC111X02
        CK20B030 KC2020 02 03.29919 12 23 43.57 -07 55 30.5          20.3 VqEC111850
        CK20B030 KC2020 02 03.31716 12 23 43.63 -07 55 26.9          20.2 VqEC111850
        CK20B030 KC2020 02 04.07927 12 23 51.95 -07 52 50.6          20.0 GVEC111204
        CK20B030 KC2020 02 04.10592 12 23 52.15 -07 52 45.9                VEC111204
        CK20B030  C2020 02 05.41889 12 24 05.43 -07 48 02.4          19.8 GVEC111G96
        CK20B030  C2020 02 05.43365 12 24 05.52 -07 47 58.6          19.6 GVEC111G96
        CK20B030  C2020 02 05.44857 12 24 05.66 -07 47 55.3          19.3 GVEC111G96
        CK20B030  C2020 02 06.34288 12 24 13.68 -07 44 32.9          19.3 GVEC111I52
        CK20B030  C2020 02 06.35646 12 24 13.77 -07 44 30.4          20.4 GVEC111I52
    
    Observer details:
    204 Schiaparelli Observatory.  Observers L. Buzzi, A. Aletti.  Measurer A. 
       Aletti.  0.84-m f/3.5 reflector + CCD, 0.36-m f/6 reflector + CCD.
    691 Steward Observatory, Kitt Peak-Spacewatch.  Observer J. V. Scotti.  0.9-m 
       f/3 reflector + CCD.
    850 Cordell-Lorenz Observatory, Sewanee.  Observers D. T. Durig, T. P. 
       McMichael, H. H. Sutherland, A. C. Truelove.  0.3-m f/7.8 Schmidt-Cassegrain 
       + 2758x2208 CCD.
    C95 SATINO Remote Observatory, Haute Provence.  Observer J. Jahn.  0.60-m f/3.2 
       Newtonian reflector + CCD.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T. 
       Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. 
       Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer 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, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. 
       Shelly, K. W. Wierzchos.  1.5-m reflector + 10K CCD.
    I47 Pierre Auger Observatory, Malargue.  Observer M. Masek.  0.3-m f/6.8 
       reflector + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer T. A. Pruyne.  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.  1.0-m reflector + CCD.
    L01 Visnjan Observatory, Tican.  Observers K. Korlevic, F. Valentine.  Measurer 
       K. Korlevic.  1.0-m f/2.9 reflector + CCD.
    Q62 iTelescope Observatory, Siding Spring.  Observer H. Sato.  0.51-m f/6.8 
       astrograph + CCD + f/4.5 focal reducer.
    W87 Cerro Tololo-LCO C.  Observer P. Breitenstein.  1.0-m Ritchey-Chretien + 
       CCD.
    X02 Telescope Live, El Sauce.  Observer E. Guido.  0.6-m f/6.5 astrograph + CCD.
    
    Orbital elements:
        C/2020 B3 (Rankin)                                                          
    Epoch 2019 Oct. 4.0 TT = JDT 2458760.5                                          
    T 2019 Oct. 22.88444 TT                                 Bell                    
    q   3.3555463            (2000.0)            P               Q                  
    z  +0.0045064      Peri.  325.92425     -0.87698517     -0.47918215             
     +/-0.0024247      Node   185.79762     +0.48044894     -0.87568131             
    e   0.9848784      Incl.   20.75545     -0.00811291     -0.05972202             
    From 44 observations 2020 Jan. 25-Feb. 6, mean residual 0".5.                   
                                                                                    
        C/2020 B3 (Rankin)                                                          
    Epoch 2020 May 31.0 TT = JDT 2459000.5                                          
    T 2019 Oct. 22.86080 TT                                 Bell                    
    q   3.3555579            (2000.0)            P               Q                  
    z  +0.0046259      Peri.  325.92292     -0.87696224     -0.47922451             
     +/-0.0024247      Node   185.79617     +0.48049061     -0.87566060             
    e   0.9844776      Incl.   20.75765     -0.00812417     -0.05968568             
    From 44 observations 2020 Jan. 25-Feb. 6, mean residual 0".5.                   
                                                                                    
    Ephemeris:
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
    2020 01 07    12 12 22.0 -08 30 27   3.1261  3.4294    99.6    16.4  19.3
    ...
    2020 01 22    12 20 07.3 -08 25 06   2.9549  3.4607   113.0    15.2  19.2
    ...
    2020 01 30    12 22 45.1 -08 08 31   2.8723  3.4795   120.7    14.1  19.2
    ...
    2020 02 05    12 24 01.4 -07 49 32   2.8161  3.4946   126.6    13.1  19.2
    2020 02 06    12 24 10.6 -07 45 50   2.8073  3.4972   127.6    12.9  19.2
    2020 02 07    12 24 18.9 -07 41 58   2.7987  3.4998   128.6    12.7  19.2
    ...
    2020 02 13    12 24 48.2 -07 15 36   2.7505  3.5159   134.7    11.5  19.2
    ...
    2020 02 21    12 24 35.5 -06 32 13   2.6972  3.5386   143.2     9.6  19.1
    ...
    2020 03 07    12 21 58.0 -04 49 25   2.6381  3.5847   159.5     5.6  19.2
    
    M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-C111
    


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