!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> MPEC 2023-F121 : COMET P/2023 C1 = P/2016 C3 (Jahn)
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  • MPEC 2023-F121 : COMET P/2023 C1 = P/2016 C3 (Jahn)

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    M.P.E.C. 2023-F121                               Issued 2023 March 24, 00:44 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets, routine data on comets and natural satellites,
             and occasional editorial announcements.  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/2023 C1 = P/2016 C3 (Jahn)
    
    
         J. Jahn reports the discovery of a comet in two images obtained at
    SATINO Remote Observatory (C95) on Feb. 14 UT, noting a 10" coma. Prediscovery
    images were reported back to 2013. Additional reports of cometary features
    are as follows:
    
    OC   Date        Reporter           Coma    Tail    PA          Exposures
    
    F52  2022-12-02  R. Weryk           0".2     10"    290           4x45s
    K88  2023-01-25  K. Sarneczky       4"        7"    280          15x25s
    G96  2023-02-01  D. Rankin          7".8
    G96  2023-03-18  D. Rankin          8"
    
    Observations:
        PK16C030 &C2013 11 22.05504123 31 44.97 -01 25 58.3          24.3 gWEF121W84
        PK16C030 &C2013 11 23.08392223 31 45.95 -01 23 50.4          23.6 rWEF121W84
        PK16C030 ZC2014 12 13.45837 05 01 31.51 +43 22 51.2                WEF121F51
        PK16C030 ZC2014 12 13.47168 05 01 30.69 +43 22 51.1                WEF121F51
        PK16C030 ZC2014 12 13.48501 05 01 29.82 +43 22 50.8          21.5 iWEF121F51
        PK16C030*KC2016 02 10.55564612 50 06.881-04 28 18.37         23.98GVEF121F51
        PK16C030  C2016 03 10.41092312 35 38.374-04 40 22.40         22.45GVEF121F51
        PK16C030  C2016 03 10.42319012 35 37.825-04 40 21.81         22.60GVEF121F51
        PK16C030  C2016 03 10.43542912 35 37.279-04 40 21.18         23.14GVEF121F51
        PK16C030  C2016 03 10.44763812 35 36.741-04 40 20.46         23.26GVEF121F51
        PK16C030  C2016 03 13.47564712 33 22.045-04 37 28.93         23.64GVEF121F51
        PK16C030  C2016 04 01.36554312 18 29.628-04 11 13.23         22.93GVEF121F51
        PK16C030  C2016 04 01.37785212 18 29.040-04 11 12.27         22.93GVEF121F51
        PK16C030  C2016 04 01.39015812 18 28.435-04 11 10.95         22.86GVEF121F51
        PK16C030  C2016 04 01.40248812 18 27.852-04 11 09.99         22.76GVEF121F51
        PK16C030  C2016 04 02.36803212 17 43.101-04 09 41.01         22.59GVEF121F51
        PK16C030  C2016 04 02.37968612 17 42.531-04 09 39.35         23.21GVEF121F51
        PK16C030  C2016 04 02.39137412 17 41.944-04 09 38.22         23.25GVEF121F51
        PK16C030  C2016 04 02.40306412 17 41.376-04 09 37.76         22.80GVEF121F51
        PK16C030 &C2016 04 09.14433312 12 40.43 -03 59 36.7          23.3 gWEF121W84
        PK16C030 &C2016 04 10.15543612 11 57.58 -03 58 13.0          22.7 rWEF121W84
        PK16C030  C2016 04 10.34572912 11 49.616-03 58 00.48         23.03GVEF121F51
        PK16C030  C2016 04 10.35864612 11 49.067-03 57 59.53         23.81GVEF121F51
        PK16C030  C2016 04 10.38475912 11 47.921-03 57 56.88         23.16GVEF121F51
        PK23C010  C2021 09 30.36686501 21 24.782+14 57 25.48         23.01GVEF121F51
        PK23C010  C2021 09 30.38165101 21 24.132+14 57 25.60         22.87GVEF121F51
        PK23C010  C2021 09 30.39773401 21 23.350+14 57 25.11         22.68GVEF121F51
        PK23C010  C2021 10 11.49342 01 12 43.310+14 48 24.73         22.9 wUEF121F51
        PK23C010  C2021 10 11.50509 01 12 42.729+14 48 23.65         22.9 wUEF121F51
        PK23C010  C2021 10 11.51677 01 12 42.140+14 48 22.61         22.6 wUEF121F51
        PK23C010  C2022 11 27.46774 09 33 36.09 +30 51 48.5          21.5 GVEF121G96
        PK23C010  C2022 11 27.49581 09 33 37.18 +30 51 49.0          21.9 GVEF121G96
        PK23C010  C2022 11 27.50101 09 33 37.38 +30 51 48.6                VEF121G96
        PK23C010  C2022 12 02.55034309 36 45.234+30 55 17.56         21.87GVEF121F52
        PK23C010  C2022 12 02.56176309 36 45.615+30 55 18.29         21.71GVEF121F52
        PK23C010  C2022 12 02.57315109 36 45.965+30 55 18.97         21.67GVEF121F52
        PK23C010  C2022 12 02.58457009 36 46.310+30 55 19.67         21.53GVEF121F52
        PK23C010  C2023 01 19.66790909 29 17.02 +32 47 24.2          20.2 RVEF121D29
        PK23C010  C2023 01 19.68205109 29 16.23 +32 47 26.3          20.3 RVEF121D29
        PK23C010  C2023 01 19.69619209 29 15.54 +32 47 28.0          20.3 RVEF121D29
        PK23C010 KC2023 01 25.02855 09 24 42.22 +32 55 54.8          19.6 RoEF121K88
        PK23C010 KC2023 01 25.03335 09 24 41.92 +32 55 55.9          19.6 RoEF121K88
        PK23C010 1C2023 02 01.32535709 17 57.559+33 00 26.42         20.01GVEF121G96
        PK23C010 1C2023 02 01.33093509 17 57.185+33 00 26.93         19.95GVEF121G96
        PK23C010 1C2023 02 01.33651209 17 56.846+33 00 27.18               VEF121G96
        PK23C010 1C2023 02 01.34209109 17 56.555+33 00 26.82         19.75GVEF121G96
        PK23C010  C2023 02 13.30774 09 06 47.31 +32 46 38.9          19.5 GVEF121G96
        PK23C010  C2023 02 13.31299 09 06 47.03 +32 46 38.1          20.2 GVEF121G96
        PK23C010*KC2023 02 14.94047809 05 21.36 +32 42 36.3          19.1 GXEF121C95
        PK23C010 KC2023 02 14.95764509 05 20.45 +32 42 33.3          19.2 GXEF121C95
        PK23C010 KC2023 02 14.97481309 05 19.51 +32 42 30.5          19.4 GXEF121C95
        PK23C010 KC2023 02 15.00914709 05 17.65 +32 42 25.7          20.6 GXEF121C95
        PK23C010 KC2023 02 15.04313509 05 15.82 +32 42 21.1          19.8 GXEF121C95
        PK23C010 KC2023 02 15.06126309 05 14.84 +32 42 17.9          19.8 GXEF121C95
        PK23C010 KC2023 02 15.07937209 05 13.87 +32 42 14.6          19.2 GXEF121C95
        PK23C010  C2023 03 18.37011 08 48 56.09 +30 00 31.3          20.6 GVEF121G96
        PK23C010  C2023 03 18.37529 08 48 56.12 +30 00 29.4          20.7 GVEF121G96
        PK23C010  C2023 03 18.38048 08 48 56.09 +30 00 27.5          21.0 GVEF121G96
        PK23C010  C2023 03 18.38567 08 48 56.00 +30 00 25.2          20.5 GVEF121G96
        PK23C010  C2023 03 21.86909 08 48 44.14 +29 35 15.2          21.2 WrEF121106
        PK23C010  C2023 03 21.87753 08 48 43.90 +29 35 12.4          21.0 WrEF121106
    
    Observer details:
    106 Crni Vrh.  Observer S. Maticic.  0.6-m f/3.3 Deltagraph + CCD.
    C95 SATINO Remote Observatory, Haute Provence.  Observer J. Jahn.  0.60-m
        f/3.2 Newtonian reflector + CCD.
    D29 Purple Mountain Observatory, XuYi Station. Observers H. B. Zhao, B. Li,
        G. Zhaori, R. Q. Hong, L. F. Hu.  Measurers H. B. Zhao, B. Li, H. Lu,
        G. Zhaori, Z. J. Xu.  1.04-m f/1.8 Schmidt + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
        Schultz, I. Smith.  Measurers S. Deen, S. Chastel, J. Fairlamb, M. Huber, Y.
        Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, H. Gao,
        C.-C. Lin, E. Magnier.  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, J. Fairlamb, M. Huber,
        Y. Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observers G. J. Leonard, A. Serrano, J. K. Hogan.
        Measurers B. Gray, D. Rankin, F. C. Shelly, E. J. Christensen, D. Fay,
        J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller,
        J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman,
        A. Serrano, K. W. Wierzchos.  1.5-m reflector + 10K CCD.
    K88 GINOP-KHK, Piszkesteto.  Observer K. Sarneczky.  0.60-m Schmidt + CCD.
    W84 Cerro Tololo-DECam.  Observers A. Dey, D. James.  Measurer S. Deen.  4.0-m
        reflector + CCD.
    
    Orbital elements:
        P/2023 C1 (Jahn)                                                            
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                                         
    T 2022 Oct. 30.09071 TT                                 Rudenko                 
    q   2.6341546            (2000.0)            P               Q                  
    n   0.13019678     Peri.  104.78499     -0.28111132     -0.95965299             
    a   3.8553981      Node     1.58656     +0.76468564     -0.22809675             
    e   0.3167620      Incl.   13.62901     +0.57985542     -0.16443239             
    P   7.57                                                                        
    From 61 observations 2013 Nov. 22-2023 Mar. 21, mean residual 0".5.             
                                                                                    
    Ephemeris:
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
    2023 02 22    08 59 38.1 +32 19 26   1.8098  2.7204   151.5    10.0  19.6
    ...
    2023 03 09    08 51 10.2 +31 02 45   1.9308  2.7434   137.2    14.2  19.8
    ...
    2023 03 17    08 49 06.8 +30 10 11   2.0137  2.7566   129.6    16.1  19.9
    ...
    2023 03 23    08 48 44.2 +29 26 57   2.0828  2.7669   124.1    17.4  20.0
    2023 03 24    08 48 46.3 +29 19 29   2.0949  2.7687   123.1    17.5  20.0
    2023 03 25    08 48 49.9 +29 11 57   2.1070  2.7704   122.2    17.7  20.0
    ...
    2023 03 31    08 49 44.7 +28 25 27   2.1827  2.7813   116.9    18.7  20.1
    ...
    2023 04 08    08 52 20.4 +27 20 42   2.2897  2.7962   110.1    19.6  20.3
    ...
    2023 04 23    09 00 51.3 +25 13 09   2.5038  2.8258    98.1    20.6  20.5
    
    M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-F121
    


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