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  • MPEC 2023-F18 : COMET C/1951 G1 (Groeneveld)

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    M.P.E.C. 2023-F18                                Issued 2023 March 16, 19:24 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/1951 G1 (Groeneveld)                       
    
         M. Meyer reports measurements made by him, along with G. W. Kronk and
    W. H. Osborn, of scans of plates taken by H. Rubingh of comet X/1951 G1. They
    report the comet displayed a coma diameter of about 10" with an extension up
    to 40" in PA 290-340.
         This comet was discovered by I. Groeneveld and reported on IAUC 1437.
    The MPC is changing the prefix of this comet's designation from X/ to C/,
    and the WGSBN has assigned the name Groeneveld.
    
    Observations:
        CJ51G010  A1951 03 31.24444 12 08 38.57 +13 21 29.6          14.3 T EF018711
        CJ51G010  A1951 04 01.25069 12 08 06.82 +13 20 41.8          14.4 T EF018711
        CJ51G010  A1951 04 01.29167 12 08 05.40 +13 20 40.1          14.6 T EF018711
        CJ51G010  A1951 04 02.17361 12 07 37.90 +13 19 52.5          15.3 TqEF018711
        CJ51G010  A1951 04 02.22292 12 07 36.28 +13 19 49.4          14.9 TqEF018711
        CJ51G010  A1951 04 02.26250 12 07 34.97 +13 19 46.3          14.0 T EF018711
        CJ51G010  A1951 04 03.30556 12 07 02.29 +13 18 40.9          14.5 T EF018711
        CJ51G010  A1951 04 04.26181 12 06 32.83 +13 17 38.4          14.5 T EF018711
        CJ51G010  A1951 04 07.30208 12 05 00.24 +13 13 35.7          15.0 T EF018711
    
    Observer details:
    711 McDonald Observatory, Fort Davis.  Observers H. Rubingh, G. van
        Biesbroeck.  Measurers M. Meyer, G. W. Kronk, W. H. Osborn.  25-cm f/7
        Ross-Fecker astrograph, 0.25-m astrograph.
    
    Orbital elements:
        C/1951 G1 (Groeneveld)                                                      
    T 1951 Nov. 6.58940 TT                                  Rudenko                 
    q   3.6430136            (2000.0)            P               Q                  
                       Peri.  187.46920     -0.78048477     +0.60239170             
                       Node    31.55162     -0.55579277     -0.54609910             
    e   1.0            Incl.   18.63870     -0.28624800     -0.58215119             
    From 9 observations 1951 Mar. 31-Apr. 7.                                        
                                                                                    
    Ephemeris:
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
    2023 02 14    01 08 12.2 +02 01 56  93.7367 93.1315    52.0     0.5  35.1
    ...
    2023 03 01    01 08 37.2 +02 05 12  93.9570 93.1686    37.1     0.4  35.1
    ...
    2023 03 09    01 08 52.9 +02 07 07  94.0533 93.1883    29.2     0.3  35.1
    ...
    2023 03 15    01 09 05.5 +02 08 37  94.1148 93.2031    23.4     0.2  35.1
    2023 03 16    01 09 07.7 +02 08 52  94.1241 93.2056    22.4     0.2  35.1
    2023 03 17    01 09 09.9 +02 09 07  94.1331 93.2081    21.5     0.2  35.1
    ...
    2023 03 23    01 09 23.3 +02 10 39  94.1814 93.2229    15.8     0.2  35.1
    ...
    2023 03 31    01 09 41.9 +02 12 42  94.2299 93.2427     8.7     0.1  35.1
    ...
    2023 04 15    01 10 17.4 +02 16 27  94.2708 93.2797     8.8     0.1  35.1
    
    M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-F18
    


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