[Iaude] MPEC W48: 2008 WY13 [a=2.41,e=0.74,i=15.6,H=21.65]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Mon Nov 20 08:14:40 EST 2023


M.P.E.C. 2023-W48                             Issued 2023 November 20, 13:13 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

                                   2008 WY13                                    


                           Revision to MPEC 2008-W29                            

Additional Observations:
     K08W13Y  C2023 11 17.84301 05 04 48.71 +18 54 46.1          22.3 wVEW048O18
     K08W13Y  C2023 11 17.84944 05 04 47.45 +18 54 37.8          22.3 wVEW048O18
     K08W13Y  C2023 11 17.85583 05 04 46.20 +18 54 29.7          21.9 wVEW048O18
     K08W13Y  C2023 11 18.84421 05 01 39.47 +18 33 31.8          22.3 wVEW048O18
     K08W13Y  C2023 11 18.85060 05 01 38.27 +18 33 23.6          22.0 wVEW048O18
     K08W13Y  C2023 11 18.85705 05 01 37.02 +18 33 15.4          22.4 wVEW048O18
     K08W13Y  C2023 11 19.87229 04 58 28.87 +18 12 07.5          21.9 wVEW048O18
     K08W13Y  C2023 11 19.87775 04 58 27.84 +18 12 00.8          22.1 wVEW048O18
     K08W13Y  C2023 11 19.88318 04 58 26.84 +18 11 54.0          22.5 wVEW048O18

Observer details:
O18 WFST, Lenghu.  Observers Z. Y. Liu, S. X. Li, Z. Q. Li, Q. Y. Hai, K. Yan,
    J. Z. Zhu, N. Jiang, Z. Y. Cai.  Measurers B. Li, H. B. Zhao, Z. J. Xu, G.
    T. Zhaori.  2.5-m f/2.48 reflector + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
231117 O18  122+   21+    231119 O18  116+   19+    MPO740155   +48.9 days

Orbital elements:
2008 WY13                                                Earth MOID = 0.0504 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M   6.62766              (2000.0)            P               Q                  
n   0.26396141     Peri.   72.09872     +0.61096633     +0.75850545             
a   2.4068134      Node   237.72478     -0.78906412     +0.56030960             
e   0.7390980      Incl.   15.55237     -0.06401527     +0.33275010             
P   3.73           H   21.65          G   0.15           U   2                  
Residuals in seconds of arc
081120 G96  0.4+  0.2+    081122 291  1.0-  0.3+    081130 G96  0.9-  0.1+
081120 G96  0.1+  0.5+    081122 291  0.0   0.6-    081130 G96  0.5+  0.7+
081120 G96  0.2+  0.0     081122 291  0.2+  0.3-    081201 291  0.9-  0.4-
081120 G96  0.4+  0.2+    081123 H55  0.0   0.0     081201 291  0.5-  0.8-
081120 854  1.5+  0.8+    081123 H55  0.1-  0.2-    081201 291  1.0+  0.2-
081120 854  2.1+  0.7-    081123 H55  0.7+  0.7+    081202 291  0.2+  0.1-
081120 854  0.4-  0.6+    081124 291  0.2+  0.2-    081202 291  0.3+  0.0
081120 G96  0.6+  0.0     081124 291  0.4-  0.5+    081202 291  0.1-  0.6-
081120 G96  0.2+  0.0     081124 291  0.4-  0.4-    231117 O18  0.0   0.0
081120 G96  0.3+  0.8+    081127 H55  0.7+  0.1-    231117 O18  0.0   0.0
081120 G96  0.2-  0.2+    081127 H55  0.5+  0.1-    231117 O18  0.0   0.2+
081121 291  0.4-  0.8-    081127 H55  0.3+  0.0     231118 O18  0.1-  0.0
081121 291  0.4-  0.2-    081130 291  0.3+  0.7+    231118 O18  0.3+  0.0
081121 291  0.2-  0.3-    081130 291  0.2-  1.1-    231118 O18  0.1+  0.0
081121 H36  1.0-  0.6+    081130 291  0.0   1.2+    231119 O18  0.1-  0.1-
081121 H36  0.1+  1.2+    081130 G96  0.7-  0.1+    231119 O18  0.2-  0.1+
081121 H36  0.1-  0.2+    081130 G96  0.4+  0.3+    231119 O18  0.1+  0.0

Ephemeris:
2008 WY13                a,e,i = 2.41, 0.74, 16                  q = 0.6279
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 10 21    06 43 34.9 +29 44 48   0.4715  1.2223   107.4    51.0    22.3
...
2023 11 05    05 49 16.3 +23 51 02   0.5134  1.4000   134.4    30.4    22.2
...
2023 11 13    05 20 50.6 +20 42 24   0.5533  1.4918   149.1    19.9    22.2
...
2023 11 19    05 01 10.8 +18 30 22   0.5941  1.5592   159.6    12.8    22.2
2023 11 20    04 58 06.1 +18 09 36   0.6020  1.5703   161.3    11.7    22.2
2023 11 21    04 55 05.2 +17 49 16   0.6100  1.5813   162.9    10.6    22.2
...
2023 11 27    04 38 26.7 +15 56 57   0.6647  1.6470   171.3     5.2    22.3
...
2023 12 05    04 20 21.8 +13 55 49   0.7532  1.7324   170.1     5.6    22.7
...
2023 12 20    03 58 47.5 +11 35 52   0.9634  1.8864   151.3    14.5    23.8

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-W48




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