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  • MPEC 2024-A29 : 2021 YN

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    M.P.E.C. 2024-A29                               Issued 2024 January 3, 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                     2021 YN                                 
    
    
                               Revision to MPEC 2021-Y65                            
    
    Additional Observations:
         K21Y00N  C2023 12 10.27773 05 02 05.52 +19 05 16.6          22.1 GVEA029V06
         K21Y00N  C2023 12 10.28512 05 02 04.39 +19 05 15.6          21.9 GVEA029V06
         K21Y00N  C2023 12 10.29251 05 02 03.26 +19 05 15.9          23.0 GVEA029V06
         K21Y00N  C2023 12 10.29990 05 02 02.15 +19 05 15.4          21.9 GVEA029V06
         K21Y00N 0C2023 12 12.49263804 56 29.851+19 03 43.76         22.47GVEA029T12
         K21Y00N 0C2023 12 12.49512804 56 29.464+19 03 43.60         22.45GVEA029T12
         K21Y00N 0C2023 12 12.49783804 56 29.038+19 03 43.46         22.50GVEA029T12
         K21Y00N  C2023 12 15.46878604 48 44.071+19 01 03.34         22.56GVEA029F51
         K21Y00N  C2023 12 15.51216204 48 36.989+19 01 00.32         21.43GVEA029F51
         K21Y00N 0C2023 12 16.43071804 46 10.634+19 00 03.60         22.76GVEA029T12
         K21Y00N 0C2023 12 16.43513104 46 09.909+19 00 03.29         22.67GVEA029T12
         K21Y00N 0C2023 12 16.43885804 46 09.299+19 00 03.03         22.73GVEA029T12
         K21Y00N 0C2023 12 16.44304804 46 08.607+19 00 02.72         22.71GVEA029T12
         K21Y00N  C2024 01 01.23139304 03 54.752+18 36 20.93         22.17GVEA029F51
         K21Y00N  C2024 01 01.24433904 03 52.728+18 36 19.74         22.32GVEA029F51
         K21Y00N  C2024 01 01.27021504 03 48.714+18 36 17.43         22.88GVEA029F51
    
    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.
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observer D. J. Tholen.
        2.24-m f/10.1 reflector + 2112 x 2112 pixels STA1600 10k CCD.
    V06 Catalina Sky Survey-Kuiper.  Observer G. J. Leonard.  Measurers B. Gray,
        D. Rankin, F. C. Shelly.  1.55-m reflector + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    231210 V06 0.10- 0.02-    240101 F51 0.07- 0.03-    E2023-R01   +0.00 days
    
    Orbital elements:
    2021 YN                                                  Earth MOID = 0.0528 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M 256.17460              (2000.0)            P               Q                  
    n   0.46483630     Peri.  127.28057     -0.77411954     +0.62128971             
    a   1.6504512      Node    91.45826     -0.61243245     -0.68648694             
    e   0.6941431      Incl.    6.97520     -0.16020438     -0.37780257             
    P   2.12           H   21.02          G   0.15           U   1                  
    Residuals in seconds of arc
    211207 G96  0.0   0.1+    220104 I52  0.0   0.2-    220111 T08  0.1+  0.0
    211207 G96 (0.9-  0.2-)   220104 G96  0.0   0.0     220111 D29  0.4-  0.3+
    211226 D29  0.5+  0.4+    220104 G96  0.0   0.0     220111 D29  0.1-  0.1-
    211226 D29  0.1+  0.2+    220104 G96  0.1+  0.1-    220111 D29  0.1-  0.2-
    211226 D29  0.6-  0.3-    220104 G96  0.0   0.0     220112 L18  0.6-  1.3+
    211227 I52  0.2+  0.3+    220106 F52  0.0   0.0     220112 L18  1.4-  0.5+
    211227 I52  0.2-  0.0     220106 F52  0.0   0.0     220112 L18  0.3-  1.2+
    211227 I52  0.1+  0.1-    220106 F52  0.0   0.0     220112 K87  1.3-  0.1-
    211227 N88  0.1+  0.2-    220106 A17  0.1+  0.1+    220112 K87  0.2-  0.1+
    211227 D29  0.0   0.0     220106 A17  0.3-  0.2+    220112 K87  0.2-  0.1+
    211227 N88  0.0   0.1-    220106 A17  0.1+  0.0     220113 T05  0.4+  0.6-
    211227 D29  0.0   0.0     220106 K87  0.2-  0.3-    220113 T05  0.1+  0.2-
    211227 N88  0.0   0.0     220106 K87  0.2+  0.2+    220113 T05  0.0   0.2-
    211227 D29  0.1+  0.1-    220106 K87  0.2-  0.2+    220113 T05  0.1+  0.1-
    211227 119  0.1-  0.0     220107 I52  0.1+  0.0     220113 K87  0.4-  0.1+
    211227 119  0.0   0.1+    220107 I52  0.1+  0.1-    220113 K87  0.3+  0.2+
    211227 119  0.2-  0.1+    220107 I52  0.1+  0.1+    220113 K87  0.2-  0.0
    211227 119  0.0   0.1-    220107 I52  0.1-  0.1+    220116 130  0.2-  0.2+
    211227 119  0.2-  0.3+    220107 K88  0.2-  0.5-    220116 130  0.1+  0.3+
    211227 N88  0.3+  0.1+    220107 K88  0.2-  0.5-    220116 130  0.1-  0.1+
    211227 N88  0.2+  0.2-    220107 K88  0.1-  0.7-    220116 130  0.0   0.3-
    211227 033  0.1-  0.4-    220107 K88  0.3-  0.4-    220116 J95  0.0   0.1+
    211227 033  0.3-  0.2-    220107 K88  0.3-  0.4-    220116 J95  0.1+  0.1+
    211227 033  0.3-  0.3-    220107 K88  0.0   0.4-    220116 J95  0.2+  0.1+
    211227 033  0.2-  0.3-    220108 I52  0.1+  0.1-    220116 J95  0.0   0.1-
    211228 B49  0.3+  1.2-    220108 I52  0.0   0.0     220117 W46  1.3+  0.3-
    211228 B49  0.1+  1.4-    220108 I52  0.1+  0.0     220117 W46  1.1+  0.1+
    211230 H06  0.2+  0.1+    220108 I52  0.1+  0.0     220117 W46  1.5+  0.2-
    211230 H06  0.1+  0.1-    220108 T05  0.0   0.2-    220118 K38  0.1-  0.0
    211230 H06  0.0   0.1+    220108 T05  0.0   0.4+    220118 K38  0.3-  0.4-
    211231 C95  0.1+  0.1+    220108 T05  0.1+  0.1+    220118 K38  0.1-  0.2+
    211231 C95  0.2+  0.2+    220108 T05  0.2+  0.2-    220118 K38  0.2-  0.2+
    211231 C95  0.1-  0.0     220109 I52  0.1+  0.1-    220118 K38  0.0   0.2+
    211231 C95  0.2+  0.0     220109 I52  0.0   0.1-    220118 L63  0.0   0.0
    220101 204  0.2-  0.0     220109 I52  0.0   0.1-    220118 L63  0.5+  0.3+
    220101 204  0.0   0.1+    220109 I52  0.2+  0.2-    220118 L63  0.5+  0.5+
    220101 204  0.1+  0.0     220109 T05  0.1-  0.2+    220119 C51  0.0   0.1-
    220101 033  0.1-  0.0     220109 T05  0.1-  0.3+    220121 595  0.1+  0.7+
    220101 033  0.0   0.1+    220109 T05  0.1+  0.1-    220121 595  0.6+  0.4-
    220101 033  0.1+  0.1+    220110 I52  0.0   0.1-    220121 595  0.5+  0.4-
    220102 K38  0.1-  0.1-    220110 I52  0.1+  0.1-    220121 K83  0.0   0.2-
    220102 K38  0.1-  0.3-    220110 I52  0.1+  0.0     220121 K83  0.1+  0.1-
    220102 K38  0.1+  0.3+    220110 I52  0.1+  0.1-    231210 V06  0.1+  0.3+
    220102 033  0.0   0.0     220110 703  0.1-  0.2+    231210 V06  0.0   0.4-
    220102 033  0.1+  0.0     220110 703  0.1-  0.0     231210 V06  0.0   0.2+
    220102 033  0.0   0.1-    220110 703  0.3-  0.0     231210 V06  0.2+  0.0
    220102 Z99  0.3-  0.4+    220110 G96  0.0   0.1-    231212 T12  0.1-  0.0
    220102 Z99  0.5-  0.6+    220110 G96  0.1+  0.2-    231212 T12  0.0   0.0
    220102 Z99  0.2-  0.3+    220110 G96  0.2+  0.1-    231212 T12  0.0   0.0
    220102 Z99  0.6-  0.5+    220110 G96  0.1+  0.2-    231215 F51  0.1+  0.1-
    220103 Z99  0.5-  0.1+    220110 F52  0.0   0.0     231215 F51  0.3-  0.0
    220103 033  0.0   0.1-    220110 F52  0.1-  0.1+    231216 T12  0.1-  0.0
    220103 033  0.1+  0.0     220110 F52  0.0   0.0     231216 T12  0.1-  0.0
    220103 033  0.1+  0.1+    220110 T08  0.0   0.2-    231216 T12  0.0   0.0
    220103 033  0.1+  0.0     220110 T08  0.0   0.4+    231216 T12  0.1-  0.0
    220104 I52  0.0   0.0     220110 T08  0.3+  0.1+    240101 F51  0.1+  0.1+
    220104 I52  0.0   0.1-    220111 T08  0.3+  0.1-    240101 F51  0.0   0.1+
    220104 I52  0.1+  0.0     220111 T08  0.1+  0.3-    240101 F51  0.2+  0.2+
    
    Ephemeris:
    2021 YN                  a,e,i = 1.65, 0.69, 7                   q = 0.5048
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 12 04    05 16 45.6 +19 08 01   0.9534  1.9326   170.6     4.8    22.8
    ...
    2023 12 19    04 39 15.8 +18 57 04   0.8455  1.8121   164.1     8.5    22.5
    ...
    2023 12 27    04 17 33.5 +18 45 11   0.8166  1.7435   151.1    15.8    22.6
    ...
    2024 01 02    04 01 58.6 +18 35 05   0.8064  1.6900   141.4    21.3    22.7
    2024 01 03    03 59 29.9 +18 33 26   0.8055  1.6809   139.8    22.2    22.7
    2024 01 04    03 57 03.7 +18 31 50   0.8049  1.6718   138.2    23.1    22.8
    ...
    2024 01 10    03 43 27.8 +18 23 34   0.8053  1.6158   128.9    28.3    22.8
    ...
    2024 01 18    03 28 33.7 +18 18 44   0.8141  1.5381   117.3    34.6    22.9
    ...
    2024 02 02    03 11 23.3 +18 38 14   0.8395  1.3828    98.2    44.8    23.1
    
    A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-A29
    


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