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  • MPEC 2023-A12 : 2022 YL7

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    M.P.E.C. 2023-A12                               Issued 2023 January 5, 15:35 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
    
                                    2022 YL7                                 
    
    
    Observations:
         K22Y07L* S2022 12 26.64853 03 38 49.10 -47 41 12.0          19   RLEA012C51
         K22Y07L  s2022 12 26.64853 1 + 3394.0252 + 2821.3320 - 5227.1713   EA012C51
         K22Y07L  S2022 12 26.71373 03 38 23.26 -47 41 25.8                LEA012C51
         K22Y07L  s2022 12 26.71373 1 + 3421.5906 + 2839.4850 - 5199.2528   EA012C51
         K22Y07L  S2022 12 26.84400 03 37 31.71 -47 41 52.5                LEA012C51
         K22Y07L  s2022 12 26.84400 1 + 3418.0366 + 2848.4424 - 5196.6615   EA012C51
         K22Y07L  S2022 12 26.90907 03 37 05.86 -47 42 04.2                LEA012C51
         K22Y07L  s2022 12 26.90907 1 + 3387.0056 + 2839.1374 - 5222.0214   EA012C51
         K22Y07L  S2022 12 27.03933 03 36 14.17 -47 42 28.2                LEA012C51
         K22Y07L  s2022 12 27.03933 1 + 3383.5871 + 2848.0966 - 5219.3276   EA012C51
         K22Y07L 2C2022 12 31.29882603 07 26.435-47 35 43.18         21.5 GWEA012T12
         K22Y07L 2C2022 12 31.30088103 07 25.609-47 35 42.32         21.7 GWEA012T12
         K22Y07L |C2023 01 01.08644 03 02 01.53 -47 30 02.5          21.3 GVEA012807
         K22Y07L |C2023 01 01.08938 03 02 00.34 -47 29 59.8          21.1 GVEA012807
         K22Y07L |C2023 01 01.09243 03 01 59.05 -47 29 58.6          21.2 GVEA012807
         K22Y07L |C2023 01 01.11815 03 01 48.20 -47 29 46.0          21.2 GVEA012807
         K22Y07L |C2023 01 01.12110 03 01 46.93 -47 29 44.3          21.2 GVEA012807
         K22Y07L |C2023 01 01.12404 03 01 45.71 -47 29 42.7          21.3 GVEA012807
         K22Y07L |C2023 01 02.04939 02 55 23.74 -47 21 28.5          21.1 GVEA012807
         K22Y07L |C2023 01 02.05410 02 55 21.76 -47 21 26.0          21.2 GVEA012807
         K22Y07L |C2023 01 02.05893 02 55 19.74 -47 21 23.1          21.2 GVEA012807
         K22Y07L |C2023 01 05.04847 02 34 41.04 -46 42 11.1          21.2 GVEA012807
         K22Y07L |C2023 01 05.05446 02 34 38.51 -46 42 05.2          21.4 GVEA012807
         K22Y07L |C2023 01 05.06026 02 34 36.09 -46 41 59.5          21.1 GVEA012807
    
    Observer details:
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
        Horn.  1.00-m f/10.0 astrograph + CCD.
    C51 WISE.  Observer Near-Earth Object Wide-field Infrared Survey Explorer.
        Measurers A. K. Mainzer, J. M. Bauer, T. Grav, J. R. Masiero, R. M. Cutri,
        J. W. Dailey, J. Pittichova, E. L. Wright.
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observer Y.
        Ramanjooloo.  Measurers Y. Ramanjooloo, R. Wainscoat.  2.24-m University
        of Hawaii reflector + CCD.
    
    Orbital elements:
    2022 YL7                                                 Earth MOID = 0.2015 AU
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Bell                    
    M 358.59007              (2000.0)            P               Q                  
    n   0.74591909     Peri.   76.27443     -0.69036239     +0.67410492             
    a   1.2041342      Node   144.95070     -0.70058420     -0.71349649             
    e   0.7741617      Incl.   27.21595     +0.18050363     -0.19106364             
    P   1.32           H   20.27          G   0.15           U   9                  
    Residuals in seconds of arc
    221226 C51  0.1-  0.2+    230101 807  0.3-  0.9-    230102 807  0.0   0.1-
    221226 C51  0.5-  0.4+    230101 807  0.2+  0.3+    230102 807  0.2+  0.1-
    221226 C51  0.3+  0.1-    230101 807  0.1+  0.0     230105 807  0.1-  0.1+
    221226 C51  0.0   0.5+    230101 807  0.1-  0.2-    230105 807  0.1-  0.0
    221227 C51  0.6+  0.3-    230101 807  0.4-  0.0     230105 807  0.2+  0.1-
    221231 T12  0.1-  0.0     230101 807  0.2-  0.1+
    221231 T12  0.3+  0.1+    230102 807  0.1-  0.2+
    
    Ephemeris:
    2022 YL7                 a,e,i = 1.20, 0.77, 27                  q = 0.2719
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2022 12 06    05 26 08.6 -40 44 07   0.7026  1.4412   116.2    37.8    21.8
    ...
    2022 12 21    04 14 25.9 -46 49 28   0.5934  1.2828   106.2    47.4    21.5
    ...
    2022 12 29    03 23 06.6 -47 44 01   0.5503  1.1883    97.5    55.1    21.4
    ...
    2023 01 04    02 41 56.0 -46 58 01   0.5239  1.1122    89.8    62.1    21.3
    2023 01 05    02 35 01.7 -46 42 55   0.5199  1.0991    88.4    63.4    21.3
    2023 01 06    02 28 08.2 -46 25 42   0.5160  1.0858    86.9    64.7    21.3
    ...
    2023 01 12    01 47 19.8 -43 59 50   0.4951  1.0031    77.8    73.4    21.3
    ...
    2023 01 20    00 54 49.9 -39 00 19   0.4736  0.8842    63.9    87.4    21.5
    ...
    2023 02 04    23 16 13.3 -25 00 32   0.4708  0.6309    31.1   126.3    23.0
    
    M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-A12
    


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