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  • MPEC 2023-L26 : A/2023 H4

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    M.P.E.C. 2023-L26                                  Issued 2023 June 7, 18:48 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
    
                                    A/2023 H4                                
    
    
    Observations:
        AK23H040* C2023 04 23.58245716 57 59.736+08 46 33.20         21.95wUEL026F52
        AK23H040  C2023 04 23.59278616 57 59.327+08 46 58.99         21.81wUEL026F52
        AK23H040  C2023 04 23.60308016 57 58.969+08 47 24.83         21.44wUEL026F52
        AK23H040 3C2023 04 24.46081616 57 27.334+09 23 36.41         21.08GVEL026T14
        AK23H040 3C2023 04 24.46179416 57 27.292+09 23 38.92         21.15GVEL026T14
        AK23H040 3C2023 04 24.46277516 57 27.251+09 23 41.46         21.70GVEL026T14
        AK23H040 |C2023 04 25.21928 16 56 57.81 +09 55 54.1          21.5 GuEL026807
        AK23H040 |C2023 04 25.22483 16 56 57.58 +09 56 08.4          21.5 GuEL026807
        AK23H040 |C2023 04 25.23038 16 56 57.34 +09 56 22.8          21.5 GuEL026807
        AK23H040 0C2023 04 25.34739 16 56 52.42 +10 01 22.4                VEL026X07
        AK23H040 0C2023 04 25.35814 16 56 52.00 +10 01 50.3          21.5 GVEL026X07
        AK23H040 DC2023 04 29.46638 16 53 48.96 +12 59 36.3          22.0 GVEL026695
        AK23H040 DC2023 04 29.47170 16 53 48.66 +12 59 50.6          22.2 GVEL026695
        AK23H040 DC2023 04 29.47703 16 53 48.42 +13 00 04.5          22.1 GVEL026695
        AK23H040 DC2023 05 02.42936 16 51 13.93 +15 10 23.0          21.9 GVEL026695
        AK23H040 DC2023 05 02.44355 16 51 13.11 +15 11 00.5          22.0 GVEL026695
        AK23H040 DC2023 05 02.45773 16 51 12.31 +15 11 38.2          22.0 GVEL026695
        AK23H040 DC2023 05 06.36903 16 47 17.98 +18 05 54.3          21.9 GVEL026695
        AK23H040 DC2023 05 06.37598 16 47 17.53 +18 06 12.6          22.0 GVEL026695
        AK23H040 DC2023 05 06.38294 16 47 17.07 +18 06 31.2          21.6 GVEL026695
        AK23H040 KC2023 05 11.43405 16 41 25.13 +21 51 03.2          21.8 RVEL026691
        AK23H040 KC2023 05 11.44592 16 41 24.19 +21 51 34.2          22.3 RVEL026691
        AK23H040 KC2023 05 12.45827 16 40 07.23 +22 36 07.8          21.5 RVEL026691
        AK23H040 KC2023 05 12.46232 16 40 06.87 +22 36 18.1          22.2 RVEL026691
        AK23H040  C2023 05 12.56303616 39 59.135+22 40 44.52         21.67wXEL026F51
        AK23H040  C2023 05 12.57632316 39 58.083+22 41 19.34         22.06wXEL026F51
        AK23H040  C2023 05 12.58960316 39 57.037+22 41 54.16         21.58wXEL026F51
        AK23H040  C2023 05 12.60288516 39 55.977+22 42 29.23         21.86wXEL026F51
        AK23H040  C2023 05 21.51844816 27 11.539+28 59 11.59         21.57wXEL026F52
        AK23H040  C2023 05 21.53134116 27 10.292+28 59 42.73         22.03wXEL026F52
        AK23H040  C2023 05 21.54421916 27 09.045+29 00 13.51         21.49wXEL026F52
        AK23H040  C2023 05 21.55714716 27 07.809+29 00 44.89         21.61wXEL026F52
        AK23H040 KC2023 05 23.39461 16 24 13.75 +30 13 32.8          21.5 RoEL026291
        AK23H040 KC2023 05 23.40936 16 24 12.32 +30 14 07.5          21.5 RoEL026291
        AK23H040 KC2023 05 23.42411 16 24 10.88 +30 14 41.9                oEL026291
        AK23H040 KC2023 05 26.94868 16 18 24.59 +32 28 21.0          21.4 VqEL026A77
        AK23H040 KC2023 05 26.95457 16 18 24.10 +32 28 33.7          21.5 VqEL026A77
        AK23H040 KC2023 05 26.97226 16 18 22.27 +32 29 12.8          21.7 VqEL026A77
        AK23H040 KC2023 05 26.98995 16 18 20.50 +32 29 51.4          21.7 VqEL026A77
        AK23H040 KC2023 05 26.99584 16 18 19.87 +32 30 04.6          21.5 VqEL026A77
        AK23H040  C2023 05 27.48501316 17 30.531+32 47 58.86         21.74wXEL026F51
        AK23H040  C2023 05 27.49702016 17 29.294+32 48 24.87         21.60wXEL026F51
        AK23H040  C2023 05 27.50889716 17 28.054+32 48 50.90         21.48wXEL026F51
        AK23H040 1C2023 05 28.42920816 15 54.993+33 22 00.28         22.20GVEL026T12
        AK23H040 1C2023 05 28.43608816 15 54.287+33 22 14.54         22.09GVEL026T12
        AK23H040 1C2023 05 29.35524616 14 20.317+33 54 42.19               VEL026G96
        AK23H040 1C2023 05 29.36044216 14 19.745+33 54 53.42         20.99GVEL026G96
        AK23H040 1C2023 05 29.36563516 14 19.194+33 55 04.66         21.51GVEL026G96
        AK23H040 1C2023 05 29.37084516 14 18.676+33 55 15.42         21.36GVEL026G96
        AK23H040 KC2023 06 01.17190016 09 28.84 +35 30 20.1                XEL026W62
        AK23H040 KC2023 06 01.19166816 09 26.75 +35 30 59.2          20.9 GXEL026W62
        AK23H040 KC2023 06 01.21144516 09 24.60 +35 31 38.2          20.8 GXEL026W62
    
    Observer details:
    291 LPL/Spacewatch II.  Observer J. V. Scotti.  1.8-m f/2.7 reflector + CCD.
    691 Steward Observatory, Kitt Peak-Spacewatch.  Observer M. T. Read.  0.9-m
        f/3 reflector + CCD.
    695 Kitt Peak.  Observers J. V. Scotti, C. Lejoly.  2.3-m f/9 reflector + CCD.
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
        Horn.  1.00-m f/10.0 astrograph + CCD.
    A77 Observatoire Chante-Perdrix, Dauban.  Observer F. Kugel.  0.40-m f/2.8
        reflector + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, I.
        Smith, P. Minguez.  Measurers K. Chambers, S. Chastel, T. de Boer, J.
        Fairlamb, H. Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R.
        Wainscoat, R. Weryk, J. Bulger, T. Lowe, P. Minguez, A. Schultz, I. Smith.
        1.8-m Ritchey-Chretien + CCD.
    F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, I.
        Smith, P. Minguez.  Measurers K. Chambers, S. Chastel, T. de Boer, J.
        Fairlamb, H. Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R.
        Wainscoat, R. Weryk, J. Bulger, T. Lowe, P. Minguez, A. Schultz, I. Smith.
        1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers 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, D. Rankin, R. L.
        Seaman, A. Serrano, F. C. Shelly, K. W. Wierzchos.  1.5-m reflector + 10K
        CCD.
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observer Y.
        Ramanjooloo.  Measurers R. Weryk, Y. Ramanjooloo, R. Wainscoat.  2.24-m
        University of Hawaii reflector + CCD.
    T14 Canada-France-Hawaii Telescope, Maunakea.  Observers R. Wainscoat, C.
        Cunningham, T. Burdullis.  Measurers R. Weryk, R. Wainscoat.  3.6-m
        Canada-France-Hawaii Telescope + CCD.
    W62 Comet Hunter Observatory2, New Ringgold.  Observer J. Maikner.  0.30-m
        f/3.8 Riccardi-Honders + CCD.
    X07 iTelescope Deep Sky Chile, Rio Hurtado.  Observer H. Sato.  0.51-m f/6.8
        astrograph + CCD.
    
    Orbital elements:
        A/2023 H4                                                                   
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                                         
    T 2023 Aug. 8.78842 TT                                  Rudenko                 
    q   2.1193503            (2000.0)            P               Q                  
    z  +0.0069797      Peri.   64.89227     -0.10567538     +0.64826586             
     +/-0.0000648      Node   230.81307     -0.77364957     +0.42280369             
    e   0.9852077      Incl.   76.61840     +0.62473920     +0.63323646             
    H   18.0                                                                        
    From 52 observations 2023 Apr. 23-June 1, mean residual 0".2.                   
                                                                                    
    Ephemeris:
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
    2023 05 08    16 45 30.4 +19 18 39   1.5531  2.3774   135.1    17.4        21.8
    ...
    2023 05 23    16 24 51.8 +29 58 03   1.5277  2.3048   129.2    19.9        21.7
    ...
    2023 05 31    16 11 30.8 +34 51 16   1.5508  2.2702   123.2    21.9        21.8
    ...
    2023 06 06    16 01 00.7 +37 59 56   1.5815  2.2463   118.2    23.5        21.9
    2023 06 07    15 59 15.1 +38 28 37   1.5875  2.2425   117.3    23.7        21.9
    2023 06 08    15 57 29.5 +38 56 29   1.5938  2.2388   116.5    23.9        21.9
    ...
    2023 06 14    15 47 04.5 +41 27 02   1.6362  2.2174   111.3    25.3        22.0
    ...
    2023 06 22    15 34 03.9 +44 05 12   1.7019  2.1918   104.6    26.7        22.1
    ...
    2023 07 07    15 14 49.9 +47 13 37   1.8391  2.1539    93.4    28.1        22.2
    
    M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-L26
    


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