[Iaude] MPEC K85: 2008 UN3 [a=1.05,e=0.23,i=24.8,H=22.1]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2021-K85                                  Issued 2021 May 25, 14:00 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  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

                                    2008 UN3                                    


                           Revision to MPEC 2008-U52                            

Additional Observations:
     K08U03N KC2009 11 01.38416423 50 37.567-27 16 01.58         22.67GVEK085T12
     K08U03N KC2009 11 11.35585723 26 03.416-18 10 46.07         23.07GVEK085T12

Observer details:
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers M. Micheli, G. T.
    Elliott, D. J. Tholen.  Measurer D. J. Tholen.  2.24-m f/10.1 reflector +
    CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
091101 T12 0.03- 0.04-    091111 T12 0.02- 0.04-    MPO149095   -0.51 days

Orbital elements:
2008 UN3                                                 Earth MOID = 0.1373 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 337.47549              (2000.0)            P               Q
n   0.91243460     Peri.  130.31531     -0.94322097     -0.18021066
a   1.0527734      Node    41.61126     -0.04700250     -0.75917147
e   0.2335346      Incl.   24.84603     +0.32882360     -0.62544608
P   1.08           H   22.1           G   0.15           U   3
Residuals in seconds of arc
081024 691  0.6-  0.6+    081027 291  0.3-  0.3-    081030 291  0.4-  0.5+
081024 691  0.6-  0.3+    081027 291  0.5-  0.2-    081030 291  0.9-  1.0+
081024 691  0.5-  0.6+    081027 291  0.6+  1.0-    081031 291  0.3+  0.3-
081025 J95  0.0   0.5-    081028 291  0.1-  0.2+    081031 291  0.1+  0.6-
081025 J95  0.3+  0.0     081028 291  1.3-  0.6+    081031 291  0.3+  1.0-
081025 J95  0.4+  0.0     081028 291  0.5-  0.2+    081107 291 (0.3-  2.3+)
081025 J95  0.0   0.1-    081029 H55  0.5-  0.2+    081107 291  0.0   1.4+
081025 H55  0.0   0.1+    081029 H55  0.2-  0.2+    081107 291  0.5+  1.0+
081025 H55  0.3-  1.0-    081029 H55  0.0   0.0     081109 291 (0.8-  1.8+)
081025 H55  0.2-  0.3+    081029 291  0.1-  0.5+    081109 291  0.5+  1.1+
081025 651  0.2+  0.4-    081029 291  0.4-  0.1-    081109 291  0.2-  0.4-
081025 651  0.0   0.4-    081029 291  0.3+  0.4+    081122 H55  1.0+  0.7-
081025 651  0.0   0.1+    081030 H55  0.0   0.2-    081122 H55  0.6+  0.5+
081027 H36  0.2+  0.1+    081030 H55  0.1+  0.1-    091101 T12  0.0   0.1+
081027 H36  0.1-  0.4-    081030 H55  0.1-  0.4+    091111 T12  0.0   0.1-

Ephemeris:
2008 UN3                 a,e,i = 1.05, 0.23, 25                  q = 0.8069
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 04 25    23 24 14.6 -25 17 47   1.3306  1.1283    55.7    47.4    24.8
...
2021 05 10    00 12 42.2 -22 10 43   1.3347  1.1772    58.3    46.9    24.9
...
2021 05 18    00 36 31.2 -20 23 12   1.3301  1.2002    59.8    46.8    24.9
...
2021 05 24    00 53 34.0 -19 00 59   1.3233  1.2161    61.0    46.8    24.9
2021 05 25    00 56 20.7 -18 47 13   1.3219  1.2186    61.2    46.8    24.9
2021 05 26    00 59 06.4 -18 33 26   1.3205  1.2211    61.4    46.8    24.9
...
2021 06 01    01 15 20.3 -17 10 37   1.3099  1.2352    62.7    46.8    24.9
...
2021 06 09    01 36 09.1 -15 20 38   1.2911  1.2519    64.5    47.0    24.9
...
2021 06 24    02 12 58.5 -11 58 36   1.2414  1.2764    68.0    47.6    24.9

A. U. Tomatic                (C) Copyright 2021 MPC           M.P.E.C. 2021-K85