[Iaude] MPEC Y22: 2018 GW3 [a=1.16,e=0.14,i=12.9,H=24.63]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun Dec 17 09:10:37 EST 2023


M.P.E.C. 2023-Y22                             Issued 2023 December 17, 14:09 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 GW3                                    


                           Revision to MPEC 2018-G100                           

Additional Observations:
     K18G03W 0C2023 10 21.54771902 59 23.561+04 44 09.00         23.34GVEY022T12
     K18G03W 0C2023 11 08.42362302 29 01.107-08 35 21.22         24.43GVEY022T12

Observer details:
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.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
231021 T12 43.2-  6.0-    231108 T12 38.0-  4.8-    E2023-Q78   -0.00 days

Orbital elements:
2018 GW3                                                 Earth MOID = 0.0623 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M  75.66802              (2000.0)            P               Q                  
n   0.79379351     Peri.   69.16031     -0.01150620     +0.99680996             
a   1.1552191      Node   200.65985     -0.98033448     -0.02680673             
e   0.1426292      Incl.   12.93516     -0.19700738     +0.07517519             
P   1.24           H   24.63          G   0.15           U   1                  
Residuals in seconds of arc
180413 F51  0.1+  0.1+    180415 807  0.6+  0.1+    180423 I52  0.3-  0.5-
180413 F51  0.1-  0.2-    180415 807  0.4+  0.2-    180423 I52  0.5+  0.3-
180413 F51  0.0   0.0     180415 691  0.2-  0.7+    180505 H21  0.0   0.6-
180413 F51  0.1-  0.0     180415 691  0.5-  0.5+    180505 H21  0.5-  0.2-
180414 I52  0.4-  0.1-    180415 691  0.3-  0.6+    180505 H21  0.5+  0.4-
180414 I52  0.6+  0.0     180416 291  0.1-  0.1+    180506 H21  0.4+  0.4-
180414 I52  0.1-  0.1-    180416 291  0.4-  0.1-    180506 H21  0.5+  0.2-
180414 G96  0.1-  0.7+    180416 291  0.2-  0.0     180506 H21  0.1+  0.2-
180414 G96  0.1+  0.1-    180419 I52  0.1+  0.4-    180918 V06  0.4+  0.0
180414 G96  0.3-  0.4+    180419 I52  0.2-  0.5-    180918 V06  0.2+  0.2+
180414 G96  0.3-  0.6-    180419 I52  0.1-  0.5-    181009 291  0.1+  0.2+
180414 033  0.2+  0.7+    180421 I52  0.5-  0.3-    181009 291  0.4-  0.8-
180414 033  0.0   0.3+    180421 I52  0.2-  0.0     181009 291  0.6-  0.3+
180414 033  0.0   0.3+    180421 I52  0.1-  0.3-    181012 H21  0.5+  0.3+
180414 033  0.1-  0.2+    180421 691  0.1+  0.0     181012 H21  0.4+  0.2+
180414 033  0.0   0.1+    180421 691  0.3-  0.4+    181012 H21  0.3+  0.1-
180414 033  0.1-  0.2+    180421 691  0.0   0.6-    231021 T12  0.1+  0.0
180414 033  0.2-  0.2+    180423 I52  0.1-  0.4-    231108 T12  0.1-  0.1-
180415 807  0.2-  0.3+    180423 I52  0.1+  0.1-

Ephemeris:
2018 GW3                 a,e,i = 1.16, 0.14, 13                  q = 0.9905
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 11 17    02 18 36.8 -12 00 06   0.3242  1.2680   144.9    26.6    23.9
...
2023 12 02    02 10 50.4 -14 07 35   0.4078  1.2884   130.4    35.6    24.7
...
2023 12 10    02 11 46.0 -13 53 18   0.4578  1.2974   123.9    39.0    25.1
...
2023 12 16    02 14 27.4 -13 17 31   0.4969  1.3031   119.5    41.1    25.3
2023 12 17    02 15 03.5 -13 09 53   0.5036  1.3040   118.9    41.4    25.3
2023 12 18    02 15 42.0 -13 01 49   0.5102  1.3049   118.2    41.7    25.4
...
2023 12 24    02 20 21.7 -12 05 44   0.5504  1.3095   114.2    43.2    25.6
...
2024 01 01    02 28 29.0 -10 34 43   0.6046  1.3144   109.4    44.9    25.8
...
2024 01 16    02 48 32.3 -07 12 02   0.7064  1.3194   101.4    47.0    26.3

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-Y22




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