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  • MPEC 2024-B11 : 2021 UL120

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    M.P.E.C. 2024-B11                              Issued 2024 January 16, 18:45 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,
                              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
    
                                   2021 UL120                                
    
    
    Observations:
         K21UC0L  C2021 10 30.56985703 18 02.287+30 42 44.57               VEB011F52
         K21UC0L  C2021 10 30.57202803 18 06.295+30 40 34.22         18.65GVEB011F52
         K21UC0L  C2021 10 30.58407103 18 28.640+30 28 25.28         19.05GVEB011F52
         K21UC0L  C2021 10 30.60825803 19 13.481+30 04 05.60         18.93GVEB011F52
         K21UC0L* C2021 10 31.05176 03 32 28.97 +23 11 32.3          18.5 GVEB011K88
         K21UC0L  C2021 10 31.05225 03 32 29.64 +23 11 06.5          18.3 GVEB011K88
         K21UC0L  C2021 10 31.05521 03 32 33.71 +23 08 35.7          18.8 GVEB011K88
         K21UC0L  C2021 10 31.05570 03 32 34.41 +23 08 10.0          18.9 GVEB011K88
         K21UC0L ZC2021 10 31.32471103 39 14.78 +19 28 35.8                VEB011I41
         K21UC0L ZC2021 10 31.32505803 39 15.21 +19 28 19.9                VEB011I41
         K21UC0L ZC2021 10 31.35333703 39 47.41 +19 06 15.0                VEB011I41
         K21UC0L ZC2021 10 31.35368503 39 47.77 +19 05 58.8                VEB011I41
         K21UC0L  C2021 11 01.39247403 57 37.299+07 54 32.36               VEB011F51
         K21UC0L  C2021 11 01.40370803 57 44.708+07 48 38.05         19.65GVEB011F51
         K21UC0L  C2021 11 01.41470703 57 51.880+07 42 51.81         19.83GVEB011F51
         K21UC0L  C2021 11 01.42574303 57 58.987+07 37 05.66         19.48GVEB011F51
         K21UC0L  C2021 11 01.48134703 58 33.790+07 08 19.97               VEB011F52
         K21UC0L  C2021 11 01.49417103 58 41.681+07 01 46.70               VEB011F52
         K21UC0L  C2021 11 01.50615503 58 48.969+06 55 40.02         19.79GVEB011F52
    
    Observer details:
    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.
    I41 Palomar Mountain--ZTF.  Observer Z. T. F. Collaboration.  Measurer K.
        Sarneczky.  1.2-m f/2.44 Oschin Schmidt + CCD.
    K88 GINOP-KHK, Piszkesteto.  Observer K. Sarneczky.  0.60-m Schmidt + CCD.
    
    Orbital elements:
    2021 UL120                                               Earth MOID = 0.0141 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M  17.09486              (2000.0)            P               Q                  
    n   0.53225696     Peri.  148.65895     +0.98451432     -0.10425565             
    a   1.5079554      Node   218.12797     +0.07110939     +0.97232825             
    e   0.3558782      Incl.   13.19479     +0.16023424     +0.20906587             
    P   1.85           H   26.96          G   0.15           U   7                  
    Residuals in seconds of arc
    211030 F52 (0.2+  0.8-)   211031 K88  0.2-  1.6+    211101 F51  0.0   0.0
    211030 F52  0.1-  0.3+    211031 I41  0.3-  0.3+    211101 F51  0.0   0.1-
    211030 F52  0.1-  0.0     211031 I41  0.1+  0.7+    211101 F52  0.2-  0.2-
    211030 F52  0.2+  0.4-    211031 I41  1.1+  0.0     211101 F52  0.3+  0.2+
    211031 K88  0.6+  1.3-    211031 I41  0.6+  0.0     211101 F52  0.1-  0.0
    211031 K88  0.4+  1.5-    211101 F51  0.0   0.1-
    211031 K88  0.4-  1.8+    211101 F51  0.1-  0.3+
    
    Ephemeris:
    2021 UL120               a,e,i = 1.51, 0.36, 13                  q = 0.9713
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 12 17    09 55 07.0 -11 36 23   0.8591  1.4895   107.6    39.0    29.1
    ...
    2024 01 01    09 49 18.6 -14 30 11   0.8120  1.5633   120.8    32.7    28.9
    ...
    2024 01 09    09 41 31.7 -15 22 11   0.7922  1.6009   128.4    28.8    28.7
    ...
    2024 01 15    09 33 45.5 -15 37 21   0.7818  1.6283   134.2    25.7    28.7
    2024 01 16    09 32 19.6 -15 37 42   0.7805  1.6328   135.2    25.1    28.6
    2024 01 17    09 30 51.6 -15 37 25   0.7794  1.6372   136.1    24.6    28.6
    ...
    2024 01 23    09 21 28.2 -15 22 04   0.7760  1.6636   141.6    21.6    28.6
    ...
    2024 01 31    09 08 02.9 -14 25 46   0.7815  1.6974   147.6    18.1    28.5
    ...
    2024 02 15    08 44 27.0 -11 08 21   0.8278  1.7569   150.7    15.9    28.6
    
    M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-B11
    


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