[Iaude] MPEC Y107: 2020 YL1 [a=1.98,e=0.60,i=48.9,H=20.43]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 30 09:12:04 EST 2023


M.P.E.C. 2023-Y107                            Issued 2023 December 30, 14:10 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2020 YL1                                    


                           Revision to MPEC 2020-Y66                            

Additional Observations:
     K20Y01L 0C2023 10 16.62997709 25 54.671+18 59 09.93         23.33GVEY107T14
     K20Y01L 0C2023 10 16.63362009 25 54.822+18 59 04.70         23.33GVEY107T14
     K20Y01L 0C2023 10 16.63727909 25 54.976+18 58 59.43         23.15GVEY107T14
     K20Y01L KC2023 11 22.63701109 31 34.997+04 08 27.10         22.90GVEY107F51
     K20Y01L KC2023 12 10.61085609 14 52.319-03 00 49.35         22.56GVEY107F52
     K20Y01L KC2023 12 18.55658809 02 37.433-05 58 59.39         23.44GVEY107F51

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.
T14 Canada-France-Hawaii Telescope, Maunakea.  Observer H. Januszewski.
    Measurer D. J. Tholen.  3.6-m f/4.1 reflector + 1024 x 2306 pixels
    Megacam.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
231016 T14 0.01+ 0.06+    231218 F51 0.02+ 0.04+    E2023-R94   -0.16 days

Orbital elements:
2020 YL1                                            PHA, Earth MOID = 0.0337 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M  21.50597              (2000.0)            P               Q                  
n   0.35317042     Peri.   71.22362     +0.67946068     -0.01215881             
a   1.9821956      Node   283.30964     -0.43990116     +0.79347227             
e   0.6026823      Incl.   48.92583     +0.58721389     +0.60848494             
P   2.79           H   20.43          G   0.15           U   0                  
Residuals in seconds of arc
201120 G96  0.1-  0.1-    201221 033  0.2-  0.2-    201227 695  0.0   0.4+
201120 G96  0.5-  0.2-    201221 033  0.2-  0.3-    210102 695  0.4-  0.2+
201208 F52  0.1+  0.1+    201221 033  0.3-  0.4-    210102 695  0.2-  0.1+
201208 F52  0.5+  0.1+    201221 I52  0.1+  0.4+    210102 695  0.3-  0.3+
201208 F52  0.2+  0.2-    201221 I52  0.0   0.6+    210102 F65  0.2-  0.0
201219 G96  0.1-  0.1-    201221 I52  0.4-  0.1+    210102 F65  0.2-  0.0
201219 G96  0.2+  0.1+    201221 I52  0.6-  0.0     210102 F65  0.0   0.2-
201219 G96  0.1+  0.2-    201222 291  0.0   0.0     210102 I52  0.1-  0.1-
201219 G96  0.1+  0.2+    201222 291  0.0   0.1-    210102 I52  0.3+  0.1+
201219 I52  0.3+  0.1-    201222 291  0.1+  0.1+    210102 I52  0.0   0.0
201219 I52  0.3-  0.1+    201223 I52  0.1-  0.1-    210102 I52  0.1+  0.0
201219 I52  0.1-  0.3+    201223 I52  0.5-  0.2+    210103 291  0.0   0.0
201219 I52  0.2+  0.1+    201223 I52  0.1+  0.3+    210103 291  0.0   0.6+
201219 033  0.0   0.2+    201223 I52  0.2-  0.0     210103 I52  0.0   0.2+
201219 033  0.2+  0.2+    201224 I52  0.3-  0.1+    210103 I52  0.3+  0.0
201219 246  0.7+  0.3-    201224 I52  0.2+  0.2-    210103 I52  0.1-  0.2+
201219 246  0.4+  0.3+    201224 I52  0.0   0.1-    210104 691  0.0   0.1+
201219 246  0.4+  0.1+    201224 695  0.2+  0.6+    210104 691  0.3+  0.1+
201219 246  0.0   0.8+    201224 695  0.3+  0.6+    210104 691  0.1-  0.0
201219 246  0.2-  0.3+    201225 F51  0.1+  0.0     210118 G96  0.4+  0.2+
201219 246  0.3-  1.4+    201226 I52  0.1+  0.2-    210118 G96  0.4+  0.0
201219 246  0.2+  0.1-    201226 I52  0.1-  0.0     210118 G96  0.3-  0.5-
201219 246  0.2+  0.1+    201226 I52  0.1+  0.1-    231016 T14  0.0   0.0
201220 I52  0.2-  0.1-    201227 I52  0.0   0.2+    231016 T14  0.0   0.0
201220 I52  0.3+  0.1-    201227 I52  0.2+  0.1+    231016 T14  0.0   0.0
201220 I52  0.4-  0.9-    201227 I52 (1.1+  0.1-)   231122 F51  0.2+  0.3-
201220 H36  0.5+  0.4+    201227 I52  0.1+  0.2-    231210 F52  0.1-  0.2+
201220 H36  0.1+  0.5-    201227 695  0.0   0.3+    231218 F51  0.1+  0.0
201220 H36  0.4-  0.1-    201227 695  0.0   0.4+

Ephemeris:
2020 YL1                 a,e,i = 1.98, 0.60, 49                  q = 0.7876
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 11 30    09 26 32.8 +01 10 40   1.3490  1.8438   103.2    31.4    23.7
...
2023 12 15    09 08 28.2 -04 40 45   1.2797  1.9587   119.2    26.0    23.6
...
2023 12 23    08 54 33.0 -07 31 51   1.2589  2.0174   127.8    22.7    23.5
...
2023 12 29    08 42 27.6 -09 26 40   1.2536  2.0603   133.8    20.2    23.5
2023 12 30    08 40 19.9 -09 44 23   1.2537  2.0674   134.7    19.8    23.5
2023 12 31    08 38 10.5 -10 01 40   1.2541  2.0744   135.6    19.4    23.5
...
2024 01 06    08 24 46.9 -11 35 16   1.2625  2.1160   140.5    17.2    23.5
...
2024 01 14    08 06 21.8 -13 10 08   1.2914  2.1700   144.7    15.2    23.5
...
2024 01 29    07 34 15.4 -14 32 50   1.4001  2.2667   143.2    15.1    23.8

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-Y107




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