[Iaude] MPEC S242: 2020 FF6 [a=2.54,e=0.57,i=5.2,H=20.65]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2023-S242                           Issued 2023 September 27, 14:08 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 FF6                                    


                           Revision to MPEC 2020-F170                           

Additional Observations:
     K20F06F 0C2023 09 10.62328904 46 27.646+16 00 00.50         23.44GVES242T14
     K20F06F 0C2023 09 11.60465704 48 50.250+16 02 41.20         23.81GVES242T12

Observer details:
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.
T14 Canada-France-Hawaii Telescope, Maunakea.  Observer L. Wells.  Measurer D.
    J. Tholen.  3.6-m f/4.1 reflector + 1024 x 2306 pixels Megacam.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
230910 T14 0.31+ 0.07+    230911 T12 0.32+ 0.07+    E2023-P27   -0.00 days

Orbital elements:
2020 FF6                                                 Earth MOID = 0.1069 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M 332.08521              (2000.0)            P               Q                  
n   0.24383010     Peri.   22.57831     -0.59508420     -0.79888757             
a   2.5375299      Node   104.04860     +0.72288914     -0.57965625             
e   0.5714842      Incl.    5.17404     +0.35114967     -0.16055309             
P   4.04           H   20.65          G   0.15           U   2                  
Residuals in seconds of arc
200323 F51  0.1+  0.0     200324 568  0.0   0.0     200415 H21  0.3-  0.1+
200323 F51  0.0   0.1-    200324 T12  0.1-  0.0     200416 H21  0.1-  0.0
200323 F51  0.0   0.1-    200324 T12  0.0   0.0     200416 H21  0.2-  0.3+
200323 F51  0.2-  0.2+    200327 033  0.3+  0.5+    200416 H21  0.5+  0.8+
200323 F51  0.2+  0.1+    200327 033  0.5-  0.4-    200420 F52  0.1-  0.3-
200323 F51  0.2+  0.0     200327 033  0.9-  0.2-    200420 F52  0.2+  0.1-
200324 033  0.6-  0.4+    200402 H21  0.1-  0.0     200420 F52  0.1-  0.4+
200324 033  0.2-  0.2+    200402 H21  0.1-  0.0     200422 F51  0.0   0.2+
200324 033  0.3-  0.2-    200402 H21  0.2-  0.1+    200422 F51  0.0   0.1-
200324 568  0.0   0.0     200415 H21  0.3-  0.2+    200422 F51  0.2+  0.2-
200324 568  0.0   0.0     200415 H21  0.6-  0.0     230910 T14  0.0   0.0
200324 T12  0.0   0.0     200415 H21  0.4-  0.1-    230911 T12  0.0   0.0

Ephemeris:
2020 FF6                 a,e,i = 2.54, 0.57, 5                   q = 1.0874
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 08 28    04 14 56.1 +15 12 43   1.5189  1.8178    89.6    33.8    24.3
...
2023 09 12    04 49 47.7 +16 03 45   1.2819  1.7052    95.6    36.0    23.8
...
2023 09 20    05 09 49.3 +16 21 11   1.1625  1.6451    98.5    37.1    23.6
...
2023 09 26    05 25 38.6 +16 29 16   1.0768  1.6002   100.6    38.0    23.4
2023 09 27    05 28 21.3 +16 30 10   1.0628  1.5927   100.9    38.2    23.3
2023 09 28    05 31 05.5 +16 30 56   1.0490  1.5852   101.2    38.3    23.3
...
2023 10 04    05 48 01.4 +16 32 38   0.9682  1.5407   103.0    39.3    23.1
...
2023 10 12    06 12 08.4 +16 26 23   0.8668  1.4822   105.0    40.6    22.8
...
2023 10 27    07 03 17.9 +15 43 16   0.6987  1.3764   107.5    43.5    22.2

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-S242