[Iaude] MPEC R216: 2023 RU9 [a=2.23,e=0.48,i=9.5,H=22.5]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2023-R216                           Issued 2023 September 15, 11:27 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

                                    2023 RU9                                    


Observations:
     K23R09U*5C2023 09 12.83073 20 00 33.27 +00 02 09.7          21.1 GXER216033
     K23R09U 5C2023 09 12.83365 20 00 33.95 +00 02 03.6          20.8 GXER216033
     K23R09U 5C2023 09 12.83656 20 00 34.66 +00 01 58.2          21.4 GXER216033
     K23R09U  C2023 09 13.10163620 01 41.24 -00 06 03.1                WER216X09
     K23R09U  C2023 09 13.11211120 01 43.77 -00 06 24.8                WER216X09
     K23R09U KC2023 09 14.13858720 06 08.392-00 41 35.77         21.32GVER216I52
     K23R09U KC2023 09 14.14135020 06 09.054-00 41 41.50         21.06GVER216I52
     K23R09U KC2023 09 14.14411520 06 09.742-00 41 46.68         21.49GVER216I52
     K23R09U /C2023 09 14.37404 20 07 08.05 -00 49 24.3          21.4 GVER216F65
     K23R09U /C2023 09 14.37665 20 07 08.69 -00 49 29.6          21.2 GVER216F65
     K23R09U /C2023 09 14.37921 20 07 09.32 -00 49 34.8          20.8 GVER216F65
     K23R09U 1C2023 09 14.82064 20 09 06.33 -01 04 45.1          20.5 VXER216033
     K23R09U 1C2023 09 14.82313 20 09 06.96 -01 04 49.8          20.8 VXER216033
     K23R09U 1C2023 09 14.82561 20 09 07.57 -01 04 55.0          20.5 VXER216033
     K23R09U 1C2023 09 14.82826 20 09 08.25 -01 05 00.5          20.6 VXER216033
     K23R09U KC2023 09 15.06798220 10 11.97 -01 13 01.0                uER216H21
     K23R09U KC2023 09 15.06938020 10 12.32 -01 13 03.5                uER216H21
     K23R09U KC2023 09 15.07562320 10 13.88 -01 13 16.3          21.5 VuER216H21

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers C. Demeautis, B.
    Stecklum, S. Melnikov, F. Ludwig, C. Hoegner, M. Hartmann.  Measurers C.
    Demeautis, B. Stecklum.  1.34-m f/3 Schmidt + CCD.
F65 Haleakala-Faulkes Telescope North.  Observer P. Breitenstein.  2.0-m
    Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer J. B. Fazekas.
    Measurers E. J. Christensen, 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, A. Serrano, F. C. Shelly,
    K. W. Wierzchos.  1.0-m prime focus + CCD.
X09 Deep Random Survey, Rio Hurtado.  Observers A. Schnabel, D. Ruhela.
    Measurer S. Deen.  0.43-m reflector + CMOS.

Orbital elements:
2023 RU9                                                 Earth MOID = 0.1658 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M   0.22490              (2000.0)            P               Q                  
n   0.29550826     Peri.  155.79850     +0.94516815     +0.32623870             
a   2.2323192      Node   185.22970     -0.32002199     +0.91602680             
e   0.4798130      Incl.    9.48198     -0.06513899     +0.23337356             
P   3.34           H   22.56          G   0.15           U   9                  
Residuals in seconds of arc
230912 033  0.2+  0.3+    230914 I52  0.1-  0.3-    230914 033  0.2+  0.4+
230912 033  0.2-  0.1+    230914 I52  0.0   0.1+    230914 033  0.1-  0.2+
230912 033  0.1-  0.5+    230914 F65  0.1+  0.1+    230914 033  0.1+  0.1+
230913 X09  0.6+  1.0+    230914 F65  0.0   0.1+    230915 H21  0.0   0.1-
230913 X09  0.8+  0.3+    230914 F65  0.1-  0.1+    230915 H21  0.0   0.2+
230914 I52  0.1+  0.2-    230914 033  0.2+  0.1+    230915 H21  0.2-  0.1+

Ephemeris:
2023 RU9                 a,e,i = 2.23, 0.48, 9                   q = 1.1612
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 08 16    18 44 01.7 +11 39 29   0.2655  1.1992   129.5    40.7    21.7
...
2023 08 31    19 15 05.2 +06 33 24   0.2356  1.1691   127.8    43.0    21.4
...
2023 09 08    19 41 23.9 +02 40 18   0.2256  1.1622   128.7    42.6    21.3
...
2023 09 14    20 05 31.9 -00 36 33   0.2221  1.1614   130.0    41.6    21.2
2023 09 15    20 09 53.3 -01 10 16   0.2220  1.1616   130.2    41.4    21.2
2023 09 16    20 14 20.1 -01 44 04   0.2219  1.1620   130.4    41.2    21.2
...
2023 09 22    20 42 35.4 -05 04 04   0.2246  1.1662   132.0    39.8    21.2
...
2023 09 30    21 22 51.9 -09 01 28   0.2367  1.1776   133.7    38.0    21.3
...
2023 10 15    22 35 56.8 -13 30 36   0.2871  1.2155   134.3    35.9    21.7

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-R216