[Iaude] MPEC D103: COMET P/2012 WA34 = P/2024 C5 (Lemmon-PANSTARRS)

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-D103                            Issued 2024 February 22, 03:45 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,
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            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                COMET P/2012 WA34 = P/2024 C5 (Lemmon-PANSTARRS)                

     E. Schwab reports the recovery of comet P/2012 WA34 (Lemmon-PANSTARRS) in
images taken on 2024 Feb. 12 and 14 UT from ESA Optical Ground Station (J04).
S. Deen found additional images taken 2022 Sep. 18 and 19 UT from Cerro
Tololo-DECam (W84).

Observations:
    PK24C050 &C2022 09 18.35537003 03 04.76 +10 19 09.8          22.0 zWED103W84
    PK24C050 &C2022 09 19.38923803 03 02.19 +10 17 56.1          21.6 zWED103W84
    PK24C050*5C2024 02 12.97344 08 57 57.15 +23 02 11.9          20.2 GVED103J04
    PK24C050 5C2024 02 12.97796 08 57 56.99 +23 02 12.2          20.5 GVED103J04
    PK24C050 5C2024 02 12.98402 08 57 56.77 +23 02 13.3          20.5 GVED103J04
    PK24C050 5C2024 02 12.98931 08 57 56.54 +23 02 14.3          20.3 GVED103J04
    PK24C050 5C2024 02 14.00707 08 57 17.81 +23 05 34.0          20.6 GVED103J04
    PK24C050 5C2024 02 14.01499 08 57 17.47 +23 05 35.9          20.4 GVED103J04
    PK24C050 5C2024 02 14.02289 08 57 17.18 +23 05 36.2          20.8 GVED103J04

Observer details:
J04 ESA Optical Ground Station, Tenerife.  Observers E. Schwab, F. Ocana, D.
    Abreu, M. Busch, L. Conversi, R. Kresken, M. Micheli.  Measurers E.
    Schwab, F. Ocana.  1.0-m f/4.4 reflector + CCD.
W84 Cerro Tololo-DECam.  Observers P. Ferguson, R. Teixeira.  Measurer S.
    Deen.  4.0-m reflector + CCD.

Orbital elements:
    P/2012 WA34 (Lemmon-PANSTARRS)                                              
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                                         
T 2023 July 8.83617 TT                                  Rudenko                 
q   3.0716932            (2000.0)            P               Q                  
n   0.09740868     Peri.  356.68134     -0.00445207     -0.99438160             
a   4.6781155      Node    93.55511     +0.91989576     -0.04554624             
e   0.3433909      Incl.    6.08277     +0.39213768     +0.09555505             
P  10.1                                                                         
>From 39 observations 2011 Sept. 26-2024 Feb. 14, mean residual 0".4.            
                                                                                
Ephemeris:
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2024 01 23    09 11 54.8 +21 37 14   2.3032  3.2700   167.1     3.8  20.5
...
2024 02 07    09 01 52.8 +22 40 50   2.3198  3.2990   171.9     2.4  20.5
...
2024 02 15    08 56 40.7 +23 08 43   2.3558  3.3151   163.6     4.8  20.6
...
2024 02 21    08 53 09.9 +23 25 42   2.3947  3.3275   157.0     6.7  20.6
2024 02 22    08 52 37.4 +23 28 11   2.4021  3.3296   155.9     7.0  20.6
2024 02 23    08 52 05.7 +23 30 33   2.4097  3.3316   154.8     7.3  20.6
...
2024 02 29    08 49 14.9 +23 42 32   2.4611  3.3443   148.3     9.0  20.7
...
2024 03 08    08 46 25.4 +23 52 30   2.5427  3.3615   139.7    11.0  20.8
...
2024 03 23    08 44 33.1 +23 53 21   2.7297  3.3949   124.5    14.0  21.0

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-D103