[Iaude] MPEC U24: 2020 KJ56 [a=44.06,e=0.03,i=2.7,H=6.54]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Mon Oct 16 16:37:46 EDT 2023


M.P.E.C. 2023-U24                              Issued 2023 October 16, 20:36 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

                                   2020 KJ56                                    


Additional Observations:
     K20K56J &C2018 06 16.15785419 03 10.58 -20 28 41.5                WEU024W84
     K20K56J &C2018 06 16.37513819 03 09.54 -20 28 42.7                WEU024W84
     K20K56J &C2018 06 16.43220719 03 09.29 -20 28 43.2                WEU024W84
     K20K56J  S2021 06 02.63722419 21 07.177-20 05 18.85               WEU024250
     K20K56J  s2021 06 02.6372241 - 4249.3440 - 4528.4420 + 3033.7422   EU024250
     K20K56J  S2021 06 02.64354319 21 07.146-20 05 18.92               WEU024250
     K20K56J  s2021 06 02.6435431 -  478.5035 - 6090.3268 + 3231.3447   EU024250
     K20K56J  S2021 06 02.64986319 21 07.115-20 05 18.94               WEU024250
     K20K56J  s2021 06 02.6498631 + 3459.9524 - 5524.9402 + 2297.1701   EU024250
     K20K56J  S2021 06 02.65618219 21 07.083-20 05 18.90               WEU024250
     K20K56J  s2021 06 02.6561821 + 6188.9011 - 3029.3024 +  558.3834   EU024250
     K20K56J  S2021 06 02.66250219 21 07.055-20 05 18.85               WEU024250
     K20K56J  s2021 06 02.6625021 + 6755.3667 +  525.3964 - 1376.3477   EU024250

Observer details:
250 Hubble Space Telescope.  Observer .  Measurer S. Deen.
W84 Cerro Tololo-DECam.  Observers D. Gerdes, L. Markwardt.  Measurer S. Deen.
    4.0-m reflector + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
180616 W84  0.7+  0.1+    210602 250  0.5+  0.1+    MPO735627   -1180 days

Orbital elements:
2020 KJ56                                                                       
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Alexandersen            
M 349.48590              (2000.0)            P               Q                  
n   0.00336993     Peri.  147.41363     +0.53440384     +0.84498796             
a  44.0611206      Node   154.87232     -0.78531553     +0.50521691             
e   0.0292715      Incl.    2.72606     -0.31255729     +0.17536026             
P 292              H    6.54          G   0.15           U   5                  
Residuals in seconds of arc
180616 W84  0.1+  0.0     200601 266  0.0   0.0     200813 266  0.0   0.0
180616 W84  0.2-  0.1+    200620 266  0.0   0.0     200813 266  0.0   0.0
180616 W84  0.1+  0.0     200620 266  0.0   0.0     200815 266  0.0   0.0
200528 266  0.0   0.0     200620 266  0.0   0.0     200815 266  0.0   0.0
200528 266  0.0   0.0     200622 266  0.0   0.0     200815 266  0.0   0.0
200528 266  0.0   0.0     200622 266  0.0   0.0     210602 250  0.0   0.0
200530 266  0.0   0.0     200622 266  0.0   0.0     210602 250  0.0   0.0
200530 266  0.0   0.0     200625 266  0.0   0.0     210602 250  0.0   0.0
200530 266  0.0   0.0     200625 266  0.0   0.0     210602 250  0.0   0.0
200601 266  0.0   0.0     200625 266  0.0   0.0     210602 250  0.0   0.0
200601 266  0.0   0.0     200813 266  0.0   0.0

Ephemeris:
2020 KJ56                a,e,i = 44.06, 0.03, 3                  q = 42.7714
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 09 16    19 25 17.7 -20 04 02  42.3221 42.7943   117.4     1.2    23.0
...
2023 10 01    19 25 03.1 -20 05 18  42.5632 42.7941   102.7     1.3    23.0
...
2023 10 09    19 25 04.3 -20 05 41  42.6986 42.7940    94.8     1.3    23.0
...
2023 10 15    19 25 09.3 -20 05 50  42.8015 42.7939    88.9     1.3    23.0
2023 10 16    19 25 10.5 -20 05 51  42.8187 42.7939    87.9     1.3    23.0
2023 10 17    19 25 11.8 -20 05 51  42.8358 42.7939    86.9     1.3    23.0
...
2023 10 23    19 25 21.7 -20 05 50  42.9381 42.7938    81.0     1.3    23.0
...
2023 10 31    19 25 40.2 -20 05 36  43.0717 42.7937    73.1     1.3    23.0
...
2023 11 15    19 26 31.1 -20 04 34  43.3056 42.7934    58.3     1.1    23.0

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-U24




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