[Iaude] MPEC E60: 2020 KE53 [a=39.26,e=0.12,i=5.1,H=10.70]

[mpec at cfa.harvard.edu]

M.P.E.C. 2024-E60                                 Issued 2024 March 5, 17:32 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 KE53                                    


Additional Observations:
     K20K53E 3C2021 06 17.43604 19 15 46.685-20 30 14.77         26.4 rVEE060266
     K20K53E 3C2021 06 17.50052 19 15 46.359-20 30 15.37         26.4 rVEE060266
     K20K53E 3C2021 06 17.57952 19 15 45.960-20 30 16.10         26.4 rVEE060266
     K20K53E 3C2021 07 05.35105 19 14 13.058-20 33 15.42         26.0 rVEE060266
     K20K53E 3C2021 07 05.43950 19 14 12.571-20 33 16.39         26.0 rVEE060266
     K20K53E 3C2021 07 05.52516 19 14 12.100-20 33 17.30         26.0 rVEE060266

Observer details:
266 New Horizons KBO Search-Subaru.  Observers T. Ito, F. Yoshida, A.
    Verbiscer, S. B. Porter, J. J. Kavelaars.  Measurer S. B. Porter.  8.2mn
    Subaru Telescope + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
210617 266 38.2-  5.4-    210705 266 38.7-  5.7-    MPO735616    -492 days

Orbital elements:
2020 KE53                                                                       
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5                 Alexandersen            
M 283.47730              (2000.0)            P               Q                  
n   0.00400611     Peri.  254.83649     +0.92409297     -0.37565356             
a  39.2633466      Node   127.17804     +0.37568171     +0.85919772             
e   0.1246889      Incl.    5.05909     +0.07011018     +0.34736678             
P 246              H   10.70          G   0.15           U   7                  
Residuals in seconds of arc
200526 266  0.0   0.1-    200621 266  0.1+  0.1+    200814 266  0.0   0.0
200526 266  0.0   0.1-    200621 266  0.1+  0.1+    200814 266  0.0   0.0
200526 266  0.0   0.1-    200621 266  0.1+  0.1+    200814 266  0.0   0.0
200529 266  0.0   0.0     200624 266  0.1-  0.0     210617 266  0.0   0.1+
200529 266  0.0   0.0     200624 266  0.1-  0.0     210617 266  0.0   0.1+
200529 266  0.0   0.0     200624 266  0.1-  0.0     210617 266  0.0   0.1+
200531 266  0.0   0.0     200812 266  0.0   0.1+    210705 266  0.0   0.1-
200531 266  0.0   0.0     200812 266  0.0   0.1+    210705 266  0.0   0.1-
200531 266  0.0   0.0     200812 266  0.0   0.1+    210705 266  0.0   0.1-

Ephemeris:
2020 KE53                a,e,i = 39.26, 0.12, 5                  q = 34.3676
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2024 02 04    19 32 30.7 -20 20 39  39.6462 38.7390    22.7     0.6    26.7
...
2024 02 19    19 34 08.9 -20 17 01  39.5131 38.7338    37.5     0.9    26.8
...
2024 02 27    19 34 55.5 -20 15 14  39.4202 38.7310    45.4     1.0    26.8
...
2024 03 04    19 35 27.4 -20 13 58  39.3417 38.7289    51.3     1.1    26.8
2024 03 05    19 35 32.5 -20 13 46  39.3279 38.7286    52.2     1.2    26.8
2024 03 06    19 35 37.4 -20 13 35  39.3140 38.7283    53.2     1.2    26.8
...
2024 03 12    19 36 05.3 -20 12 27  39.2269 38.7262    59.1     1.3    26.8
...
2024 03 20    19 36 37.2 -20 11 07  39.1024 38.7234    67.0     1.4    26.8
...
2024 04 04    19 37 19.8 -20 09 15  38.8514 38.7182    81.6     1.5    26.8

M. P. C. Staff               (C) Copyright 2024 MPC           M.P.E.C. 2024-E60