[Iaude] MPEC S258: 2020 UF2 [a=1.13,e=0.31,i=3.1,H=21.73]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Thu Sep 28 10:09:47 EDT 2023


M.P.E.C. 2023-S258                           Issued 2023 September 28, 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 UF2                                    


                           Revision to MPEC 2020-U131                           

Additional Observations:
     K20U02F ;C2019 02 10.38340 13 33 53.10 -20 33 22.8          21.9 gVES258W84
     K20U02F ;C2019 02 10.38470 13 33 53.41 -20 33 25.3          21.3 iVES258W84
     K20U02F  C2019 12 20.27240 06 10 44.55 +18 18 37.6                VES258G96
     K20U02F  C2019 12 20.27814 06 10 43.57 +18 18 36.9          21.3 GVES258G96
     K20U02F  C2019 12 20.28388 06 10 42.61 +18 18 35.7          20.8 GVES258G96

Observer details:
G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers B. Gray, D. Rankin,
    F. C. Shelly.  1.5-m reflector + 10K CCD.
W84 Cerro Tololo-DECam.  Observer .  Measurer P. VanWylen.  4.0-m 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
190210 W84 0.14- 0.03-    191220 G96 0.05- 0.00-    MPO740954   +0.16 days

Orbital elements:
2020 UF2                                            PHA, Earth MOID = 0.0412 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M 217.88648              (2000.0)            P               Q                  
n   0.82101961     Peri.   34.37140     -0.00092804     +0.99902134             
a   1.1295367      Node   235.61378     -0.92909520     -0.01721611             
e   0.3056169      Incl.    3.07167     -0.36983949     +0.04074273             
P   1.20           H   21.73          G   0.15           U   3                  
Residuals in seconds of arc
190210 W84  0.0   0.0     201020 I52  0.3-  0.4-    201103 291  0.1-  0.1-
190210 W84  0.0   0.0     201020 I52  0.2+  0.1+    201104 291  0.1-  0.2+
191220 G96  0.3-  0.7-    201020 I52  0.1+  0.4-    201104 291  0.6+  0.0
191220 G96  0.1-  0.3-    201021 I52  0.4+  0.8-    201112 291  0.1+  0.1-
191220 G96  0.3+  0.3-    201021 I52  0.0   0.2-    201112 291  0.1+  0.5-
201018 G96  0.3-  0.1+    201021 I52  0.0   0.1+    201112 291  0.1+  0.6+
201018 G96  0.2+  0.1-    201021 I52  0.0   0.2-    201113 291  0.2+  0.2-
201018 G96  0.3+  0.2-    201022 I52  0.1+  0.4-    201113 291  0.3+  0.5-
201018 G96  0.1-  0.3+    201022 I52  0.1+  0.1-    201113 291  0.1-  0.3-
201018 I52  0.4+  0.3-    201022 I52  0.3-  0.0     201114 691  0.2+  0.1+
201018 I52  0.5-  0.1-    201022 I52  0.1+  0.0     201114 691  0.0   0.1-
201018 I52  0.4-  0.2+    201023 I52  0.3-  0.2+    201114 691  0.6+  0.6-
201018 I52  0.5-  0.2-    201023 I52  0.2-  0.3-    201117 G96  0.2-  0.3+
201018 L01  0.2+  0.3-    201023 I52  1.6-  1.1-    201117 G96  0.0   0.0
201018 L01  0.1+  0.2+    201024 C51  0.8-  0.5-    201117 G96  0.1+  0.0
201018 L01  0.7+  0.4+    201024 C51  0.4+  0.0     201117 G96  0.1-  1.1+
201018 L01  0.3-  0.1-    201024 C51  0.3+  0.6-    201118 291  0.1-  0.1-
201019 I52  0.1+  0.3-    201024 C51  0.2+  1.1-    201118 291  0.2+  0.1+
201019 I52  0.2-  0.2-    201024 C51  0.0   1.1-    201118 291  0.1+  0.2-
201019 I52  0.3+  0.1-    201103 291  0.5+  0.1+

Ephemeris:
2020 UF2                 a,e,i = 1.13, 0.31, 3                   q = 0.7843
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 08 29    08 27 15.8 +17 35 34   2.2347  1.4546    30.3    20.5    25.3
...
2023 09 13    09 08 07.2 +14 41 07   2.1400  1.4306    34.6    23.5    25.3
...
2023 09 21    09 29 55.4 +12 53 29   2.0836  1.4140    36.8    25.2    25.2
...
2023 09 27    09 46 20.2 +11 26 20   2.0391  1.3998    38.4    26.4    25.2
2023 09 28    09 49 04.8 +11 11 17   2.0315  1.3973    38.7    26.6    25.2
2023 09 29    09 51 49.7 +10 56 06   2.0239  1.3947    38.9    26.8    25.2
...
2023 10 05    10 08 23.4 +09 21 48   1.9773  1.3786    40.5    28.1    25.2
...
2023 10 13    10 30 45.0 +07 07 55   1.9130  1.3549    42.4    29.8    25.1
...
2023 10 28    11 13 57.7 +02 33 12   1.7887  1.3037    45.6    33.0    25.0

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-S258





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