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  • MPEC 2023-P87 : COMET C/2023 P1 (Nishimura)

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    M.P.E.C. 2023-P87                               Issued 2023 August 15, 19:16 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 C/2023 P1 (Nishimura)                       
    
         I. Endoh reports the discovery of a comet by H. Nishimura in images taken
    on Aug. 11 UT, at Gomyo, Kakegawa, Japan with a digital camera, reporting a 5'
    coma. Reports of cometary features are as follows:
    
    OC   Date        Reporter           Coma    Tail    PA          Exposures
    
    P87  2023-08-13  K. Yoshimoto     216"                           30x30s
    X09  2023-08-14  S. Deen          100"      200"    267-268
    Q38  2023-08-14  M. Mattiazzo     180"
    950  2023-08-14  M. Masek          78"
    C40  2023-08-15  A. Ivanov         50"
    M50  2023-08-15  G. Masi           90"      900"        270
    G00  2023-08-15  M. Jaeger        270"      600"        275       7x60s
    950  2023-08-15  M. Masek         222"                           29x30s
    
    Observations:
        CK23P010* V2023 08 11.76854 07 04 09.47 +18 52 24.3          11.0 T EP087247
        CK23P010  v2023 08 11.76854 1 138.02806  +34.73972     40           EP087247
        CK23P010  V2023 08 11.76888 07 04 09.60 +18 52 27.7                 EP087247
        CK23P010  v2023 08 11.76888 1 138.02806  +34.73972     40           EP087247
        CK23P010  V2023 08 11.76921 07 04 10.09 +18 52 26.6                 EP087247
        CK23P010  v2023 08 11.76921 1 138.02806  +34.73972     40           EP087247
        CK23P010  V2023 08 11.79992 07 04 14.52 +18 52 42.0                 EP087247
        CK23P010  v2023 08 11.79992 1 138.02806  +34.73972     40           EP087247
        CK23P010  V2023 08 12.77992 07 06 58.28 +19 05 11.5          10.2 T EP087247
        CK23P010  v2023 08 12.77992 1 138.02806  +34.73972     40           EP087247
        CK23P010  V2023 08 12.78035 07 06 58.56 +19 05 10.8          10.5 T EP087247
        CK23P010  v2023 08 12.78035 1 138.02806  +34.73972     40           EP087247
        CK23P010  V2023 08 12.78076 07 06 58.93 +19 05 16.8          10.3 T EP087247
        CK23P010  v2023 08 12.78076 1 138.02806  +34.73972     40           EP087247
        CK23P010 KC2023 08 13.79848 07 09 56.21 +19 18 33.3          10.0 TVEP087P87
        CK23P010 KC2023 08 13.80417 07 09 57.12 +19 18 37.0                VEP087P87
        CK23P010 KC2023 08 13.80977 07 09 58.19 +19 18 40.9                VEP087P87
        CK23P010 :C2023 08 14.22001 07 11 11.56 +19 24 08.6          11.4 VqEP087950
        CK23P010 :C2023 08 14.22157 07 11 11.88 +19 24 09.8          11.5 VqEP087950
        CK23P010  C2023 08 14.40011207 11 44.25 +19 26 38.1                WEP087X09
        CK23P010  C2023 08 14.40189907 11 44.62 +19 26 39.4                WEP087X09
        CK23P010 !C2023 08 14.48539 07 11 59.77 +19 27 40.8          10.0 GVEP087U94
        CK23P010 !C2023 08 14.48710 07 12 00.02 +19 27 42.0          10.0 GVEP087U94
        CK23P010 0C2023 08 14.48836 07 12 00.35 +19 27 42.9                VEP087U94
        CK23P010 !C2023 08 14.48881 07 12 00.38 +19 27 43.1          10.0 GVEP087U94
        CK23P010 0C2023 08 14.48982 07 12 00.63 +19 27 44.1                VEP087U94
        CK23P010 0C2023 08 14.49129 07 12 00.87 +19 27 45.7                VEP087U94
        CK23P010 0C2023 08 14.49275 07 12 01.14 +19 27 46.7          10.8 GVEP087U94
        CK23P010  C2023 08 14.76161 07 12 50.49 +19 31 24.0          10.5 TqEP087D95
        CK23P010  C2023 08 14.76388 07 12 50.93 +19 31 26.2                qEP087D95
        CK23P010  C2023 08 14.76728 07 12 51.54 +19 31 28.7                qEP087D95
        CK23P010  C2023 08 14.77197 07 12 52.38 +19 31 32.8                qEP087D95
        CK23P010  C2023 08 14.83152 07 13 03.22 +19 32 26.0          12.8 GVEP087Q38
        CK23P010  C2023 08 14.83307 07 13 03.53 +19 32 28.6          10.0 TVEP087Q38
        CK23P010  C2023 08 14.83463 07 13 03.94 +19 32 30.5          12.9 GVEP087Q38
        CK23P010  C2023 08 14.83616 07 13 04.22 +19 32 32.9          12.8 GVEP087Q38
        CK23P010 1C2023 08 15.03536 07 13 41.22 +19 35 07.9          13.5 GVEP087C40
        CK23P010 1C2023 08 15.03700 07 13 41.60 +19 35 07.5          13.5 GVEP087C40
        CK23P010 1C2023 08 15.03845 07 13 41.75 +19 35 07.0          13.7 GVEP087C40
        CK23P010 KC2023 08 15.08390607 13 50.47 +19 35 45.0          10.9 VZEP087G23
        CK23P010 KC2023 08 15.08683 07 13 50.87 +19 35 48.8          14.3 GVEP087G00
        CK23P010 KC2023 08 15.08882 07 13 51.24 +19 35 50.3          14.4 GVEP087G00
        CK23P010 KC2023 08 15.09101307 13 51.72 +19 35 51.4          11.1 VZEP087G23
        CK23P010 KC2023 08 15.09191 07 13 51.81 +19 35 53.0          14.5 GVEP087G00
        CK23P010 KC2023 08 15.09374 07 13 52.14 +19 35 54.5          14.0 GVEP087G00
        CK23P010 KC2023 08 15.09498 07 13 52.40 +19 35 55.5          14.5 GVEP087G00
        CK23P010 KC2023 08 15.09740707 13 52.89 +19 35 57.0          11.0 VZEP087G23
        CK23P010  C2023 08 15.10332107 13 53.99 +19 36 02.8          14.0 RVEP087M50
        CK23P010 KC2023 08 15.10396 07 13 54.19 +19 36 02.4          13.1 RqEP087157
        CK23P010 KC2023 08 15.10522 07 13 54.36 +19 36 03.5          13.4 RqEP087157
        CK23P010 KC2023 08 15.10650 07 13 54.57 +19 36 05.0          13.7 RqEP087157
        CK23P010  C2023 08 15.10967107 13 55.14 +19 36 07.7          13.8 RVEP087M50
        CK23P010  C2023 08 15.12100107 13 57.28 +19 36 17.2          12.7 GVEP087L06
        CK23P010 KC2023 08 15.12265307 13 57.59 +19 36 18.8          12.4 GVEP087L06
        CK23P010 KC2023 08 15.12296307 13 57.70 +19 36 17.5          12.9 GVEP087L06
        CK23P010 KC2023 08 15.12894307 13 58.79 +19 36 23.8          14.1 GXEP087L01
        CK23P010 KC2023 08 15.12949207 13 58.91 +19 36 24.3          14.2 GXEP087L01
        CK23P010 KC2023 08 15.12998107 13 59.04 +19 36 23.8          14.3 GXEP087L01
        CK23P010  C2023 08 15.18919 07 14 10.38 +19 37 12.6          13.0 GVEP087J01
        CK23P010  C2023 08 15.19009 07 14 10.53 +19 37 09.1          12.8 GVEP087J01
        CK23P010 KC2023 08 15.19054 07 14 10.38 +19 37 15.2          15.0 GVEP087J01
        CK23P010  C2023 08 15.19100 07 14 10.69 +19 37 17.7          12.6 GVEP087J01
        CK23P010  C2023 08 15.19190 07 14 10.99 +19 37 11.3          12.7 GVEP087J01
        CK23P010 KC2023 08 15.19236 07 14 10.93 +19 37 15.5          14.8 GVEP087J01
        CK23P010  C2023 08 15.19281 07 14 11.03 +19 37 15.3          12.8 GVEP087J01
        CK23P010 KC2023 08 15.19418 07 14 10.93 +19 37 18.1          15.2 GVEP087J01
        CK23P010 :C2023 08 15.21699 07 14 15.43 +19 37 36.4          11.2 VqEP087950
        CK23P010 2C2023 08 15.22935 07 14 17.714+19 37 46.92         13.5 GVEP087G40
        CK23P010 :C2023 08 15.23144 07 14 18.14 +19 37 48.4          11.3 VqEP087950
        CK23P010 2C2023 08 15.23277 07 14 18.355+19 37 49.26         13.6 GVEP087G40
        CK23P010 2C2023 08 15.23627 07 14 19.027+19 37 52.54         13.6 GVEP087G40
        CK23P010  S2023 08 15.26761107 14 24.711+19 38 13.55               LEP087C53
        CK23P010  s2023 08 15.2676111 + 2298.5891 + 1777.9475 + 6520.9457   EP087C53
        CK23P010  S2023 08 15.27049407 14 25.170+19 38 14.91               LEP087C53
        CK23P010  s2023 08 15.2704941 + 1391.6769 +  228.9388 + 6996.6606   EP087C53
        CK23P010  S2023 08 15.27337707 14 25.573+19 38 17.56               LEP087C53
        CK23P010  s2023 08 15.2733771 +  391.0699 - 1335.4807 + 7000.1378   EP087C53
        CK23P010  S2023 08 15.33983307 14 38.394+19 39 11.48               LEP087C53
        CK23P010  s2023 08 15.3398331 + 1521.0533 +  444.1896 + 6959.3755   EP087C53
        CK23P010  S2023 08 15.34463807 14 39.125+19 39 15.93               LEP087C53
        CK23P010  s2023 08 15.3446381 -  152.9270 - 2136.3217 + 6808.6033   EP087C53
        CK23P010  S2023 08 15.40829407 14 51.430+19 40 09.48               LEP087C53
        CK23P010  s2023 08 15.4082941 + 1926.9233 + 1134.6360 + 6778.9971   EP087C53
        CK23P010  S2023 08 15.41502107 14 52.513+19 40 15.19               LEP087C53
        CK23P010  s2023 08 15.4150211 -  382.1589 - 2466.5645 + 6687.3945   EP087C53
    
    Observer details:
    157 Frasso Sabino.  Observers R. Haver, R. Gorelli.  Measurer R. Haver.
        0.37-m f/6.70 Cassegrain + CMOS.
    247 Roving Observer.  Observer H. Nishimura.  f/3.0 + Canon EOS 6D.
    950 La Palma.  Observer M. Masek.  0.25-m f/6.8 reflector + CCD.
    C40 Kuban State University Astrophysical Observatory.  Observers A. Ivanov, A.
        Barcov, V. Ivanov, V. Lysenko, N. Yakovenko, N. Ivanova, N. Gorbunov, G.
        Kurbatov, P. Shchukin, V. Roshchupko.  Measurer A. Ivanov.  0.51-m f/8
        reflector + CCD.
    C53 NEOSSat.  Observer C. Smith-Perez.  Measurers D. D. Balam, D. W. E. Green,
        C. E. Spratt.  0.15-m Maksutov Reflector + CCD.
    D95 Kurihara.  Observer T. Takahashi.  0.25-m f/4.2 reflector + CCD.
    G00 AZM Martinsberg, Oed.  Observers M. Jaeger, E. Prosperi, S. Prosperi.
        Measurer M. Jaeger.  0.4-m f/3.2 reflector + CCD.
    G23 Vulpecula Observatory, Budapest.  Observer Z. Banfalvy.  0.15-m f/5.32
        refractor + CCD.
    G40 Slooh.com Canary Islands Observatory.  Observer N. Paul.  0.43-m f/6.8
        Corrected Dall-Kirkham + CCD.
    J01 Observatorio Cielo Profundo, Leon.  Observer J. Gonzalez.  0.20-m f/6
        Ritchey-Chretien + CCD.
    L01 Visnjan Observatory, Tican.  Observers K. Korlevic, I. Forkapa, E.
        Pettarin.  Measurer E. Pettarin.  1.0-m f/2.9 reflector + CCD.
    L06 Sormano 2 Observatory, Bellagio Via Lattea.  Observer G. Ventre.  Measurer
        P. Sicoli.  0.36m Schmidt Cassegrain + CCD.
    M50 Virtual Telescope Project, Manciano.  Observer G. Masi.  0.25-m  f/4.5
        astrograph + CCD.
    P87 Hirao Observatory, Yamaguchi.  Observer K. Yoshimoto.  0.20-m f/8 Ritchey-
        Chretien + CCD + f/5.4 focal Reducer.
    Q38 Swan Hill.  Observer M. Mattiazzo.  C11 RASA f/2.2 + Canon 6D.
    U94 iTelescope Observatory, Beryl Junction (Sato).  Observers A. Pearce, H.
        Sato.  0.25-m f/3.4 reflector + CCD T5 Beryl Junction Utah USA, 0.51-m
        f/6.8 astrograph + CCD + f/4.5 focal reducer.
    X09 Deep Random Survey, Rio Hurtado.  Observers A. Schnabel, D. Ruhela.
        Measurer S. Deen.  0.43-m reflector + CMOS.
    
    Orbital elements:
        C/2023 P1 (Nishimura)                                                       
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                                        
    T 2023 Sept. 18.18879 TT                                Rudenko                 
    q   0.2211257            (2000.0)            P               Q                  
                       Peri.  117.17778     +0.35694964     -0.59978608             
                       Node    68.25181     -0.85465181     -0.51912711             
    e   1.0            Incl.  129.55528     +0.37703745     -0.60890369             
    From 70 observations 2023 Aug. 11-15, mean residual 0".5.                       
                                                                                    
    Ephemeris:
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
    2023 07 16    06 13 44.5 +14 19 08   2.4741  1.5729    21.5    13.7  13.9
    ...
    2023 07 31    06 38 25.9 +16 31 10   2.0876  1.2924    28.7    22.2  12.7
    ...
    2023 08 08    06 55 30.6 +17 56 41   1.8570  1.1325    32.0    28.3  11.9
    ...
    2023 08 14    07 11 28.6 +19 11 26   1.6739  1.0068    33.9    34.2  11.1
    2023 08 15    07 14 30.5 +19 24 57   1.6426  0.9853    34.2    35.3  11.0
    2023 08 16    07 17 40.1 +19 38 47   1.6111  0.9636    34.4    36.4  10.9
    ...
    2023 08 22    07 40 02.4 +21 08 41   1.4188  0.8298    35.1    44.5   9.9
    ...
    2023 08 30    08 24 31.9 +23 17 53   1.1605  0.6400    33.4    60.3   8.4
    ...
    2023 09 14    11 29 58.4 +17 19 58   0.8546  0.2676    13.7   117.4   3.9
    
    M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-P87
    


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