[Iaude] MPEC O37: 2023 QW4 [a=2.23,e=0.85,i=16.6,H=19.36]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-O37                                 Issued 2024 July 21, 14:11 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

                                    2023 QW4                                    


                           Revision to MPEC 2023-Q124                           

Additional Observations:
     K23Q04W DC2024 06 16.23657 17 18 50.50 -03 39 50.9          22.9 GVEO037695
     K23Q04W DC2024 06 16.25657 17 18 48.48 -03 39 56.7          23.1 GVEO037695
     K23Q04W 0C2024 07 02.31754016 55 42.686-04 59 10.53         23.44GVEO037T12
     K23Q04W 0C2024 07 02.32465816 55 42.168-04 59 12.95         23.50GVEO037T12
     K23Q04W 0C2024 07 02.33197016 55 41.636-04 59 15.47         23.57GVEO037T12

Observer details:
695 Kitt Peak.  Observer M. J. Brucker.  2.3-m f/9 reflector + 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.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
240616 695  0.8-  1.6-    240702 T12  0.4-  0.9-    E2024-DD6   +0.00 days

Orbital elements:
2023 QW4                                                 Earth MOID = 0.2067 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M  29.09715              (2000.0)            P               Q                  
n   0.29593282     Peri.  341.64259     -0.31650210     -0.92015823             
a   2.2301837      Node   126.17073     +0.90216848     -0.36707894             
e   0.8455271      Incl.   16.59152     +0.29311849     +0.13624196             
P   3.33           H   19.36          G   0.15           U   4                  
Residuals in seconds of arc
230712 F51  0.3+  0.4+    230819 F52  0.1+  0.0     230904 F51  0.0   0.0
230712 F51  0.1-  0.0     230823 F51  0.1-  0.0     230916 F52  0.0   0.1-
230712 F51  0.2+  0.1+    230823 F51  0.0   0.1-    230916 F52  0.0   0.2+
230725 F51  0.1+  0.3-    230824 F51  0.0   0.0     230916 F52  0.1+  0.1-
230819 F51  0.1+  0.0     230824 F51  0.2+  0.1+    240616 695  0.2-  0.7+
230819 F51  0.2-  0.2-    230824 F51  0.1+  0.2+    240616 695  0.0   0.3-
230819 F51  0.1+  0.1-    230904 F51  0.1-  0.2+    240702 T12  0.0   0.0
230819 F52  0.1+  0.1+    230904 F51  0.1-  0.1+    240702 T12  0.0   0.0
230819 F52  0.2+  0.1+    230904 F51  0.0   0.1-    240702 T12  0.0   0.0

Ephemeris:
2023 QW4                 a,e,i = 2.23, 0.85, 17                  q = 0.3445
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 06 21    17 11 12.1 -04 00 26   1.6199  2.5877   157.4     8.7    23.1
...
2024 07 06    16 51 34.4 -05 20 27   1.8166  2.7076   144.2    12.7    23.6
...
2024 07 14    16 44 11.0 -06 09 08   1.9443  2.7687   136.2    14.7    23.8
...
2024 07 20    16 40 03.4 -06 46 59   2.0486  2.8133   130.2    16.0    24.0
2024 07 21    16 39 29.0 -06 53 21   2.0665  2.8206   129.2    16.2    24.1
2024 07 22    16 38 56.4 -06 59 43   2.0847  2.8279   128.2    16.4    24.1
...
2024 07 28    16 36 19.4 -07 38 06   2.1968  2.8711   122.3    17.4    24.3
...
2024 08 05    16 34 26.7 -08 29 07   2.3535  2.9272   114.8    18.3    24.5
...
2024 08 20    16 35 14.8 -10 01 57   2.6623  3.0276   101.3    19.1    24.9

A. U. Tomatic                (C) Copyright 2024 MPC           M.P.E.C. 2024-O37