[Iaude] MPEC J100: 2018 WB [a=1.12,e=0.25,i=22.8,H=23.11]

mpec at cfa.harvard.edu mpec at cfa.harvard.edu
Mon May 6 10:11:28 EDT 2024


M.P.E.C. 2024-J100                                  Issued 2024 May 6, 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

                                    2018 WB                                     


                           Revision to MPEC 2018-W13                            

Additional Observations:
     K18W00B  C2024 05 04.21043 12 10 21.80 +36 53 22.9          22.9 GVEJ100V00
     K18W00B  C2024 05 04.21604 12 10 20.21 +36 53 06.2          23.2 GVEJ100V00
     K18W00B  C2024 05 04.22165 12 10 18.66 +36 52 50.0          22.7 GVEJ100V00
     K18W00B  C2024 05 04.22726 12 10 17.19 +36 52 33.0          22.4 GVEJ100V00
     K18W00B 7C2024 05 04.89565912 07 21.953+36 19 04.09               VEJ100Z84
     K18W00B 7C2024 05 04.94082012 07 09.706+36 16 46.23         22.3 GVEJ100Z84
     K18W00B 7C2024 05 04.98499112 06 57.680+36 14 30.20               VEJ100Z84

Observer details:
V00 Kitt Peak-Bok.  Observer R. A. Mastaler.  Measurers B. Gray, D. Rankin, F.
    C. Shelly.  2.25-m reflector + mosaic CCD.
Z84 Calar Alto-Schmidt.  Observers F. Ocana, R. Kresken, M. Micheli, L.
    Conversi.  Measurers F. Ocana, M. Micheli.  0.8-m f/3 Schmidt + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
240504 V00 0.75- 0.16-    240504 Z84 0.73- 0.16-    E2024-CI1   -0.47 days

Orbital elements:
2018 WB                                                  Earth MOID = 0.0405 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 245.51396              (2000.0)            P               Q                  
n   0.83043938     Peri.  272.28654     +0.76706399     +0.55982628             
a   1.1209789      Node    53.84412     -0.31464673     +0.75394241             
e   0.2524646      Incl.   22.83809     -0.55911561     +0.34375192             
P   1.19           H   23.11          G   0.15           U   1                  
Residuals in seconds of arc
181116 G96  0.3+  0.1-    181117 L01  0.4+  0.6+    181210 H21  0.4-  0.3+
181116 G96  0.0   0.5+    181117 L01  0.3+  0.5+    181210 H21  0.2-  0.1-
181116 G96  0.1+  0.3+    181127 I52  1.1-  0.5+    181211 H21  0.7+  1.1+
181116 G96  0.1+  1.2-    181127 I52  0.5-  0.3-    181211 H21  0.3+  0.9+
181116 H01  0.1+  0.2-    181127 I52  0.2-  0.2-    181211 H21  0.1-  0.2+
181116 H01  0.2+  0.3+    181127 I52  0.4-  0.0     181213 H21  0.4+  0.2+
181116 H01  0.2+  0.3+    181127 691  0.3+  0.5+    181213 H21  0.3+  0.4+
181116 H01  0.1+  0.3+    181127 691  0.0   0.3-    181213 H21  0.2-  0.1-
181117 I52  0.1-  0.1-    181127 691  0.1-  0.4-    240504 V00  0.0   0.1-
181117 I52  0.2+  0.2-    181128 I52  0.6-  0.5-    240504 V00  0.3-  0.1-
181117 I52  0.3+  0.2+    181128 I52  0.0   0.1+    240504 V00  0.2-  0.3+
181117 I52  0.2+  0.2+    181128 I52  0.2+  0.1-    240504 V00  0.8+  0.0
181117 I52  0.6-  0.5-    181129 I52  0.4-  0.2-    240504 Z84  0.3-  0.3-
181117 I52  0.3+  0.5+    181129 I52  0.2-  0.1-    240504 Z84  0.2+  0.1-
181117 I52  0.7-  0.7-    181129 I52  0.3-  0.2-    240504 Z84  0.5-  0.2+
181117 I52  0.3-  0.5+    181129 I52  0.1-  0.1-
181117 L01  0.3+  0.3-    181210 H21  0.2-  0.2+

Ephemeris:
2018 WB                  a,e,i = 1.12, 0.25, 23                  q = 0.8380
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 06    14 22 18.7 +45 35 10   0.3971  1.2701   124.8    40.3    23.2
...
2024 04 21    13 14 51.9 +44 31 30   0.3362  1.2205   122.9    43.7    22.9
...
2024 04 29    12 34 37.9 +40 41 45   0.3133  1.1914   119.1    47.6    22.8
...
2024 05 05    12 06 55.1 +36 13 49   0.3012  1.1686   115.1    51.4    22.7
2024 05 06    12 02 38.6 +35 22 00   0.2996  1.1647   114.3    52.1    22.7
2024 05 07    11 58 28.9 +34 28 20   0.2982  1.1608   113.5    52.8    22.7
...
2024 05 13    11 35 56.8 +28 32 53   0.2920  1.1369   108.4    57.5    22.8
...
2024 05 21    11 12 07.9 +19 38 15   0.2903  1.1041   100.8    64.2    22.9
...
2024 06 05    10 41 14.2 +02 16 33   0.3027  1.0408    86.5    76.6    23.3

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-J100





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