[Iaude] MPEC W95: 2022 US21 [a=0.93,e=0.39,i=22.9,H=21.83]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Nov 22 09:25:26 EST 2023


M.P.E.C. 2023-W95                             Issued 2023 November 22, 14:23 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

                                   2022 US21                                    


                           Revision to MPEC 2022-V12                            

Additional Observations:
     K22U21S KC2023 10 22.36132806 44 25.415+46 49 48.72         21.72GVEW095V06
     K22U21S KC2023 10 22.36711506 44 25.170+46 50 08.23         22.07GVEW095V06
     K22U21S KC2023 10 22.37290206 44 24.922+46 50 27.60         21.82GVEW095V06
     K22U21S KC2023 10 22.37869106 44 24.673+46 50 47.08         21.83GVEW095V06
     K22U21S 0C2023 11 17.53955304 59 50.192+70 07 57.70         22.06GVEW095T12
     K22U21S 0C2023 11 17.54307504 59 47.986+70 08 04.94         22.11GVEW095T12

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.
V06 Catalina Sky Survey-Kuiper.  Observer J. B. Fazekas.  Measurers E. C.
    Beshore, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
    Groeller, J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J. Leonard, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.55-m reflector +
    1K CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
231022 V06 0.15- 0.03-    231117 T12 0.31- 0.01-    E2023-QF3   -0.19 days

Orbital elements:
2022 US21                                           PHA, Earth MOID = 0.0353 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M  78.23718              (2000.0)            P               Q                  
n   1.09394579     Peri.  230.91572     -0.24744977     +0.95341758             
a   0.9328365      Node    26.35391     -0.72476821     -0.06397136             
e   0.3892882      Incl.   22.86964     -0.64302384     -0.29479243             
P   0.90           H   21.83          G   0.15           U   2                  
Residuals in seconds of arc
221028 F51  0.0   0.0     221031 204  0.3+  0.2-    221113 691  0.1+  0.2+
221028 F51  0.0   0.2+    221031 104  0.3-  0.0     221114 950  0.1-  0.4-
221030 G96  0.1-  0.0     221031 104  0.1-  0.7+    221114 950  0.1-  0.1-
221030 G96  0.0   0.3+    221031 587  0.1-  0.7+    221114 950  0.2-  0.2-
221030 G96  0.1+  0.0     221031 587 (0.4+  0.9+)   221114 950  0.2-  0.2-
221030 G96  0.1+  0.3-    221101 H36  0.8+  0.8+    221114 950  0.5-  0.7-
221030 I52  0.0   0.5-    221101 H36  0.4-  0.2-    221114 950  0.1-  0.2-
221030 I52  0.2-  0.1-    221101 H36  0.4-  0.2-    221114 950  0.2-  0.2-
221030 I52  0.2+  0.3-    221107 290  0.1-  0.2-    221114 950  0.1-  0.2-
221030 595  0.7+  0.3+    221107 290  0.1+  0.1-    221122 H21  0.1+  0.2-
221030 595  0.3+  0.2-    221107 290  0.1-  0.2-    221122 H21  0.1+  0.2-
221030 595  0.4-  0.3+    221107 290  0.1-  0.0     221123 H21  0.2+  0.2+
221030 L01  0.1+  0.3-    221112 I52  0.9-  0.1-    221123 H21  0.1+  0.2-
221030 246  0.5+  0.2-    221112 I52 (1.6-  2.0-)   221125 H21  0.1+  0.0
221030 246  0.1+  0.0     221112 691  0.3+  0.5+    221125 H21  0.2+  0.3+
221030 L01  0.2+  0.0     221112 691  0.1-  0.2+    231022 V06  0.2+  0.1+
221030 L01  0.0   0.0     221112 691  0.4-  0.2+    231022 V06  0.1+  0.1+
221030 L01  0.1-  0.4+    221112 033  0.3+  0.1+    231022 V06  0.0   0.0
221030 L01  0.3+  0.0     221112 033  0.1+  0.3+    231022 V06  0.1-  0.1-
221031 I52  0.0   0.0     221112 033  0.1-  0.1-    231117 T12  0.0   0.2-
221031 I52  0.1+  0.1-    221113 691  0.0   0.2-    231117 T12  0.0   0.2-
221031 I52  0.3-  0.2-    221113 691  0.3+  0.0

Ephemeris:
2022 US21                a,e,i = 0.93, 0.39, 23                  q = 0.5697
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 10 23    06 44 01.1 +47 25 07   0.4200  1.1991   108.9    51.7    22.2
...
2023 11 07    06 12 44.7 +61 45 44   0.3968  1.2463   121.7    42.6    22.0
...
2023 11 15    05 23 17.9 +68 28 54   0.3974  1.2650   126.1    39.2    21.9
...
2023 11 21    04 21 54.4 +71 47 32   0.4048  1.2762   127.6    37.8    21.9
2023 11 22    04 09 53.8 +72 07 51   0.4066  1.2778   127.7    37.7    21.9
2023 11 23    03 57 34.7 +72 24 05   0.4086  1.2793   127.8    37.6    21.9
...
2023 11 29    02 43 38.2 +72 36 43   0.4238  1.2872   127.1    37.7    22.0
...
2023 12 07    01 29 57.4 +70 03 08   0.4517  1.2938   124.1    39.1    22.2
...
2023 12 22    00 37 52.9 +62 59 32   0.5203  1.2943   115.3    43.4    22.6

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-W95




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