[Iaude] MPEC X269: COMET P/2023 X3 (PANSTARRS)

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Dec 13 13:56:55 EST 2023


M.P.E.C. 2023-X269                            Issued 2023 December 13, 18:53 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                          COMET P/2023 X3 (PANSTARRS)                           

     Y. Ramanjooloo reports the discovery of a comet in three 45-second w-band
survey images taken on Dec. 7 UT by Pan-STARRS 2 (F52), noting a very diffuse
2".1 coma and a straight 3" tail at position angle 240 deg. Prediscovery 
positions were reported back to Oct. 2023. Additional reports of cometary
features are as follows:

OC   Date        Reporter           Coma    Tail    PA          Exposures

J13  2023-12-09  F. D. Romanov      6"                           15x60s
F52  2023-12-10  R. Weryk           0".4      5"    260           8x45s

Observations:
    PK23X030  C2023 10 22.47764505 13 56.579+23 21 27.15         22.19GVEX269F52
    PK23X030  C2023 10 22.48849205 13 56.502+23 21 27.69         22.00GVEX269F52
    PK23X030  C2023 10 22.49935205 13 56.499+23 21 28.86         22.20GVEX269F52
    PK23X030  C2023 10 22.51023205 13 56.433+23 21 29.45         21.68GVEX269F52
    PK23X030  C2023 10 26.45815405 13 34.439+23 26 10.12         21.67GVEX269F51
    PK23X030  C2023 10 26.46978005 13 34.306+23 26 11.09         21.64GVEX269F51
    PK23X030  C2023 10 26.48057205 13 34.213+23 26 11.83         21.47GVEX269F51
    PK23X030  C2023 10 26.49133405 13 34.112+23 26 12.55         21.98GVEX269F51
    PK23X030  C2023 11 11.37051305 08 30.260+23 42 12.60               VEX269V00
    PK23X030  C2023 11 11.37604105 08 30.080+23 42 12.85         21.34GVEX269V00
    PK23X030  C2023 11 11.38703905 08 29.728+23 42 13.75               VEX269V00
    PK23X030  C2023 12 04.32980704 53 14.962+23 53 58.42         21.60wXEX269F51
    PK23X030  C2023 12 04.34405304 53 14.297+23 53 58.68         21.54wXEX269F51
    PK23X030  C2023 12 04.35817604 53 13.605+23 53 58.85         21.65wXEX269F51
    PK23X030  C2023 12 04.37365004 53 12.857+23 53 59.01         21.58wXEX269F51
    PK23X030* C2023 12 07.35062204 50 53.699+23 54 21.42         21.15wXEX269F52
    PK23X030  C2023 12 07.36297004 50 53.103+23 54 21.49         21.09wXEX269F52
    PK23X030  C2023 12 07.37545104 50 52.475+23 54 21.48         21.07wXEX269F52
    PK23X030  C2023 12 07.49363604 50 46.756+23 54 22.17         20.91GVEX269F51
    PK23X030  C2023 12 07.49427704 50 46.718+23 54 22.17         21.08GVEX269F51
    PK23X030 KC2023 12 07.96437 04 50 24.75 +23 54 22.9          20.8 GVEX269104
    PK23X030 KC2023 12 07.98368 04 50 23.81 +23 54 23.3                VEX269104
    PK23X030 KC2023 12 08.01157904 50 22.49 +23 54 23.1          21.3 GVEX269L01
    PK23X030 KC2023 12 08.02774604 50 21.71 +23 54 22.4          21.2 GVEX269L01
    PK23X030 KC2023 12 08.03648304 50 21.35 +23 54 22.7          21.2 GVEX269L01
    PK23X030 1C2023 12 08.31545104 50 08.370+23 54 24.52               LEX269658
    PK23X030 1C2023 12 08.31990704 50 08.149+23 54 24.40               LEX269658
    PK23X030 1C2023 12 08.32437504 50 07.922+23 54 24.26               LEX269658
    PK23X030 1C2023 12 08.32884304 50 07.698+23 54 24.15               LEX269658
    PK23X030 1C2023 12 08.33329904 50 07.473+23 54 24.11               LEX269658
    PK23X030 #C2023 12 09.00990504 49 35.857+23 54 27.24         20.8 rVEX269J13
    PK23X030 #C2023 12 09.01627904 49 35.525+23 54 27.38         20.7 rVEX269J13
    PK23X030 #C2023 12 09.01901004 49 35.387+23 54 27.13         20.7 rVEX269J13
    PK23X030 #C2023 12 09.02265304 49 35.152+23 54 27.56         21.0 rVEX269J13
    PK23X030 KC2023 12 09.10549104 49 31.39 +23 54 26.7          20.7 GXEX269W62
    PK23X030 KC2023 12 09.11952804 49 30.73 +23 54 26.8          20.6 GXEX269W62
    PK23X030 KC2023 12 09.13356304 49 30.04 +23 54 26.8          21.0 GXEX269W62
    PK23X030  C2023 12 10.31818504 48 34.692+23 54 29.91         21.33wXEX269F52
    PK23X030  C2023 12 10.31882904 48 34.640+23 54 29.76         20.86wXEX269F52
    PK23X030  C2023 12 10.33107504 48 34.058+23 54 29.76         20.92wXEX269F52
    PK23X030  C2023 12 10.34270404 48 33.521+23 54 30.03         21.14wXEX269F52
    PK23X030  C2023 12 10.34334804 48 33.473+23 54 30.07         21.04wXEX269F52
    PK23X030  C2023 12 10.35503104 48 32.931+23 54 30.07         20.88wXEX269F52
    PK23X030  C2023 12 10.35567504 48 32.886+23 54 30.18         21.09wXEX269F52
    PK23X030 0C2023 12 10.41473 04 48 29.83 +23 54 28.6                VEX269U94
    PK23X030 0C2023 12 10.42439 04 48 29.40 +23 54 29.1          21.4 GVEX269U94
    PK23X030 KC2023 12 11.82378504 47 24.47 +23 54 27.4          20.7 GVEX269587
    PK23X030 KC2023 12 11.82728704 47 24.32 +23 54 27.4          20.5 GVEX269587
    PK23X030 KC2023 12 11.83078504 47 24.18 +23 54 27.3          20.7 GVEX269587

Observer details:
104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurer P.
    Bacci.  0.60-m f/4.0 reflector + CCD.
587 Sormano.  Observer E. Colzani.  Measurer P. Sicoli.  0.5-m f/6.8 reflector
    + CCD.
658 National Research Council of Canada.  Observers D. D. Balam, C. E. Spratt.
    Measurers D. D. Balam, D. W. E. Green.  1.82-m Reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Herman, T. Lowe, P. Minguez, A.
    Schultz, I. Smith.  Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
    Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
    Weryk.  1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Herman, T. Lowe, P. Minguez, A.
    Schultz, I. Smith.  Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
    Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
    Weryk.  1.8-m Ritchey-Chretien + CCD.
J13 La Palma-Liverpool Telescope.  Observer F. D. Romanov.  2.00-m f/10
    Ritchey-Chretien + CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
U94 iTelescope Observatory, Beryl Junction.  Observer H. Sato.  0.43-m f/6.8
    astrograph + CCD + f/4.5 focal reducer.
V00 Kitt Peak-Bok.  Observer K. W. Wierzchos.  Measurers M. J. Brucker, C. E.
    Woodward, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, H. Groeller, J.
    K. Hogan, R. A. Kowalski, S. M. Larson, C. Lejoly, G. J. Leonard, R. A.
    Mastaler, R. S. McMillan, D. Rankin, R. L. Seaman, A. Serrano, F. C.
    Shelly, K. W. Wierzchos.  2.25-m reflector + 4x4K mosaic CCD.
W62 Comet Hunter Observatory2, New Ringgold.  Observer J. Maikner.  0.30-m
    f/3.8 Riccardi-Honders + CCD.

Orbital elements:
    P/2023 X3 (PANSTARRS)                                                       
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                                        
T 2024 Apr. 22.45081 TT                                 Bell                    
q   3.0294535            (2000.0)            P               Q                  
n   0.11229306     Peri.   40.93480     -0.22238527     -0.97250990             
a   4.2550119      Node    62.01853     +0.87288991     -0.23015604             
e   0.2880270      Incl.    4.48522     +0.43429023     -0.03539337             
P   8.78                                                                        
>From 49 observations 2023 Oct. 22-Dec. 11, mean residual 0".2.                  
                                                                                
Ephemeris:
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2023 11 13    05 07 40.8 +23 43 33   2.2374  3.1456   152.0     8.5  22.2
...
2023 11 28    04 58 03.0 +23 52 19   2.1510  3.1257   169.2     3.4  22.1
...
2023 12 06    04 51 56.9 +23 54 13   2.1307  3.1158   178.2     0.6  22.1
...
2023 12 12    04 47 16.2 +23 54 29   2.1278  3.1087   173.9     1.9  22.1
2023 12 13    04 46 29.9 +23 54 27   2.1284  3.1075   172.7     2.3  22.1
2023 12 14    04 45 43.9 +23 54 24   2.1292  3.1064   171.5     2.7  22.1
...
2023 12 20    04 41 17.3 +23 53 45   2.1404  3.0996   164.5     4.9  22.1
...
2023 12 28    04 36 01.2 +23 52 31   2.1709  3.0911   155.2     7.7  22.1
...
2024 01 12    04 29 15.6 +23 52 01   2.2712  3.0765   138.4    12.3  22.2

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-X269




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