[Iaude] MPEC J117: 2021 KB22 [a=1.36,e=0.29,i=0.5,H=29.9]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-J117                                  Issued 2024 May 7, 16:59 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 KB22                                    


Observations:
     K21K22B* C2021 05 30.52675914 32 22.89 +12 59 38.6          17.1 GVEJ117381
     K21K22B  C2021 05 30.52685214 32 23.09 +13 00 10.5          17.0 GVEJ117381
     K21K22B  C2021 05 30.55251214 33 09.96 +15 25 58.9          16.8 GVEJ117381
     K21K22B  C2021 05 30.55261614 33 10.22 +15 26 35.5          16.9 GVEJ117381
     K21K22B  C2021 05 30.58416714 34 20.55 +18 52 02.8          17.0 GVEJ117381
     K21K22B  C2021 05 30.58425914 34 20.83 +18 52 44.3          16.3 GVEJ117381
     K21K22B  C2021 05 30.61709514 35 57.35 +23 02 38.9          16.5 GVEJ117381
     K21K22B  C2021 05 30.61715314 35 57.48 +23 03 10.6          16.7 GVEJ117381
     K21K22B KC2021 05 30.73501 15 00 20.24 +45 00 00.1          17.0 GVEJ117N82
     K21K22B KC2021 05 30.73600 15 00 36.42 +45 14 46.8          16.8 GVEJ117N82
     K21K22B KC2021 05 30.73711 15 00 54.65 +45 31 21.9          16.9 GVEJ117N82

Observer details:
381 Tokyo-Kiso.  Observers J. Beniyama, S. Sako.  1.05-m f/3.1 Schmidt + CCD.
N82 Multa Observatory.  Observer L. Elenin.  0.4-m f/1.25 reflector + CCD.

Orbital elements:
2021 KB22                                                Earth MOID = 0.0008 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Veres                   
M 261.85357              (2000.0)            P               Q                  
n   0.62056676     Peri.  212.13048     +0.29450514     +0.95561717             
a   1.3612682      Node    74.99842     -0.87505032     +0.27298384             
e   0.2908564      Incl.    0.46914     -0.38412713     +0.11079553             
P   1.59           H   29.98          G   0.15           U   7                  
Residuals in seconds of arc
210530 381  0.0   1.4-    210530 381  0.8-  0.8-    210530 N82  0.9-  1.9-
210530 381  0.6+  0.7+    210530 381  0.1-  1.9+    210530 N82  0.5+  0.9+
210530 381  0.9-  0.4+    210530 381  1.3+  1.3-    210530 N82  0.4+  1.0+
210530 381  0.1-  0.7-    210530 381  0.4+  1.7+

Ephemeris:
2021 KB22                a,e,i = 1.36, 0.29, 0                   q = 0.9653
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 04 07    08 17 43.4 +20 29 18   0.8838  1.4935   104.7    40.4    32.2
...
2024 04 22    08 33 22.6 +19 29 52   0.9615  1.4359    93.8    44.3    32.4
...
2024 04 30    08 44 51.6 +18 44 04   0.9984  1.4034    88.8    45.9    32.5
...
2024 05 06    08 54 38.3 +18 03 08   1.0235  1.3783    85.4    46.9    32.5
2024 05 07    08 56 21.4 +17 55 45   1.0274  1.3740    84.9    47.0    32.5
2024 05 08    08 58 06.0 +17 48 12   1.0313  1.3698    84.3    47.2    32.5
...
2024 05 14    09 09 02.5 +16 59 25   1.0527  1.3440    81.3    48.0    32.5
...
2024 05 22    09 24 47.7 +15 44 58   1.0767  1.3089    77.5    49.0    32.6
...
2024 06 06    09 57 24.4 +12 55 51   1.1064  1.2420    71.5    50.8    32.6

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-J117