[Iaude] MPEC J118: 2021 XA11 [a=2.07,e=0.56,i=8.8,H=28.3]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-J118                                  Issued 2024 May 7, 17:01 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

                                   2021 XA11                                    


Observations:
     K21X11A* C2021 12 11.48171301 58 44.34 +31 29 37.6          16.2 GXEJ118381
     K21X11A  C2021 12 11.48181701 58 43.69 +31 29 19.3          16.2 GXEJ118381
     K21X11A  C2021 12 11.53299801 52 27.81 +28 21 54.0          16.3 GXEJ118381
     K21X11A  C2021 12 11.53305601 52 27.24 +28 21 35.2                XEJ118381
     K21X11A  C2021 12 11.53444401 52 15.77 +28 15 32.2          16.0 GXEJ118381
     K21X11A  C2021 12 11.53453701 52 14.96 +28 15 06.4          16.4 GXEJ118381
     K21X11A  C2021 12 11.54826401 50 15.58 +27 11 13.9          15.9 GXEJ118381
     K21X11A  C2021 12 11.54835601 50 14.71 +27 10 44.9          16.0 GXEJ118381
     K21X11A  C2021 12 11.54945601 50 04.77 +27 05 20.9          15.8 GXEJ118381
     K21X11A  C2021 12 11.54954901 50 03.85 +27 04 51.7          15.8 GXEJ118381
     K21X11A  C2021 12 11.58223401 44 39.77 +24 00 07.3                XEJ118381
     K21X11A  C2021 12 11.58233801 44 38.72 +23 59 27.8          15.4 GXEJ118381
     K21X11A  C2021 12 11.58368101 44 24.08 +23 50 45.5          15.5 GXEJ118381
     K21X11A  C2021 12 11.58377301 44 23.01 +23 50 06.1          15.5 GXEJ118381

Observer details:
381 Tokyo-Kiso.  Observer J. Beniyama.  1.05-m f/3.1 Schmidt + CCD.

Orbital elements:
2021 XA11                                                Earth MOID = 0.0001 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 268.84368              (2000.0)            P               Q                  
n   0.33150193     Peri.  219.74912     -0.48022898     -0.86405030             
a   2.0676579      Node   259.43958     +0.83876819     -0.40200603             
e   0.5636334      Incl.    8.83497     +0.25660874     -0.30299874             
P   2.97           H   28.30          G   0.15           U   9                  
Residuals in seconds of arc
211211 381  0.1+  0.2-    211211 381  0.0   0.9-    211211 381  0.3-  0.3+
211211 381  0.3+  0.6+    211211 381  0.9+  1.8+    211211 381  0.7+  1.0+
211211 381  0.4-  0.9+    211211 381  0.4+  0.1-    211211 381  0.2+  0.9+
211211 381  1.5-  2.7-    211211 381  0.5+  1.1+    211211 381  0.7-  2.5-
211211 381  0.4+  0.3+    211211 381  0.5-  0.4-

Ephemeris:
2021 XA11                a,e,i = 2.07, 0.56, 9                   q = 0.9023
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 07    22 58 58.5 +00 34 03   3.4027  2.6056    31.8    11.7    33.8
...
2024 04 22    23 20 31.4 +03 08 30   3.2134  2.5321    40.3    14.9    33.7
...
2024 04 30    23 32 02.7 +04 33 49   3.1019  2.4911    44.8    16.6    33.6
...
2024 05 06    23 40 42.4 +05 39 03   3.0140  2.4594    48.2    17.8    33.6
2024 05 07    23 42 09.1 +05 50 02   2.9991  2.4541    48.8    18.0    33.6
2024 05 08    23 43 35.8 +06 01 02   2.9840  2.4487    49.3    18.2    33.6
...
2024 05 14    23 52 16.8 +07 07 34   2.8918  2.4160    52.6    19.4    33.5
...
2024 05 22    00 03 53.3 +08 37 38   2.7645  2.3713    57.0    21.0    33.4
...
2024 06 06    00 25 48.3 +11 30 32   2.5149  2.2837    65.2    23.8    33.2

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-J118