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  • MPEC 2022-X37 : 2018 YF2

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    M.P.E.C. 2022-X37                              Issued 2022 December 2, 14:05 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
    
                                    2018 YF2                                 
    
    
                               Revision to MPEC 2018-Y80                            
    
    Additional Observations:
         K18Y02F 0C2022 10 27.20132217 03 43.316+39 24 51.56         22.63GVEX037T12
         K18Y02F 0C2022 10 27.20583717 03 44.355+39 24 54.80         22.55GVEX037T12
         K18Y02F 0C2022 10 27.21025717 03 45.357+39 24 57.97         22.62GVEX037T12
         K18Y02F 0C2022 10 27.21476117 03 46.401+39 25 01.17         22.35GVEX037T12
         K18Y02F 0C2022 11 24.21281119 16 19.523+42 19 00.30         22.67GVEX037T12
         K18Y02F 0C2022 11 24.21889719 16 21.581+42 18 59.30         22.69GVEX037T12
    
    Observer details:
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observers D. Hung, D.
        J. Tholen.  Measurer D. J. Tholen.  2.24-m f/10.1 reflector + 2112 x 2112
        pixels STA1600 10k CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    221027 T12 0.02- 0.09-    221124 T12 0.01- 0.07-    MPO467307   +0.09 days
    
    Orbital elements:
    2018 YF2                                                 Earth MOID = 0.0882 AU
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Veres                   
    M 250.61901              (2000.0)            P               Q                  
    n   1.20286387     Peri.  328.29582     -0.42169482     +0.51273644             
    a   0.8756389      Node   264.87631     -0.59204826     -0.78038278             
    e   0.3146469      Incl.   48.66380     -0.68676949     +0.35791627             
    P   0.82           H   21.01          G   0.15           U   1                  
    Residuals in seconds of arc
    181224 F51 (0.0   0.4+)   181226 104  0.2-  0.0     190109 V06  0.1-  0.1+
    181224 F51  0.0   0.1-    181226 104  0.3+  0.2+    190109 V06  0.2-  0.2-
    181224 F51  0.1+  0.0     181227 J95  0.1-  0.5+    190111 291  0.5-  0.0
    181224 L01  0.1+  0.2+    181227 J95  0.3-  0.0     190111 291  0.1-  0.2+
    181224 L01  0.1+  0.3+    181227 J95  0.7-  0.3+    190111 291  0.2-  0.1-
    181224 L01  0.4-  0.3+    190103 291  0.4-  0.2-    190130 807  0.0   0.1+
    181224 L01  0.1-  0.2+    190103 291  0.1-  0.3+    190130 807  0.1+  0.2-
    181224 595  0.2-  0.7-    190103 291  0.3+  0.3-    190130 807  0.0   0.2-
    181224 595  0.1+  0.4+    190103 F51  0.0   0.0     190208 807  0.2+  0.1+
    181224 595  0.1+  0.5+    190103 F51  0.0   0.0     190208 807  0.1+  0.0
    181225 291  0.4+  0.1-    190103 F51  0.1-  0.0     190208 807  0.0   0.1-
    181225 291  0.3+  0.1-    190103 F51  0.1+  0.0     221027 T12  0.0   0.0
    181225 291  0.1+  0.0     190103 F51  0.0   0.0     221027 T12  0.1+  0.0
    181226 H21  0.1+  0.3+    190103 F51  0.1+  0.2-    221027 T12  0.0   0.0
    181226 H21  0.2+  0.2+    190103 F51  0.1-  0.2+    221027 T12  0.1+  0.0
    181226 H21  0.3+  0.2+    190109 691  0.0   0.3+    221124 T12  0.1-  0.0
    181226 C95  0.3+  0.5-    190109 691  0.2-  0.0     221124 T12  0.0   0.0
    181226 C95  0.4+  0.5-    190109 V06  0.3-  0.0
    181226 104  0.1+  0.5-    190109 V06  0.5-  0.0
    
    Ephemeris:
    2018 YF2                 a,e,i = 0.88, 0.31, 49                  q = 0.6001
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2022 11 02    17 27 02.4 +40 31 07   0.8275  1.0404    69.1    63.0    22.9
    ...
    2022 11 17    18 37 05.2 +42 15 27   0.7818  1.0914    75.1    61.1    22.8
    ...
    2022 11 25    19 20 49.4 +42 17 02   0.7583  1.1122    77.9    60.2    22.8
    ...
    2022 12 01    19 56 08.9 +41 45 01   0.7436  1.1250    79.8    59.6    22.8
    2022 12 02    20 02 11.7 +41 36 33   0.7416  1.1269    80.1    59.5    22.8
    2022 12 03    20 08 16.5 +41 27 10   0.7396  1.1287    80.3    59.4    22.7
    ...
    2022 12 09    20 45 14.5 +40 10 35   0.7309  1.1381    81.6    58.9    22.7
    ...
    2022 12 17    21 34 28.7 +37 35 12   0.7287  1.1467    82.6    58.3    22.7
    ...
    2023 01 01    22 59 42.9 +30 39 49   0.7583  1.1507    81.6    57.7    22.8
    
    A. U. Tomatic                (C) Copyright 2022 MPC           M.P.E.C. 2022-X37
    


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