[Iaude] MPEC U128: 2023 UM2 [a=1.48,e=0.35,i=18.0,H=25.1]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Oct 20 09:22:54 EDT 2023 

M.P.E.C. 2023-U128                             Issued 2023 October 20, 13:21 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 UM2                                    


Observations:
     K23U02M 1C2023 10 14.24985 00 32 44.39 +01 38 08.4          20.5 GVEU128G96
     K23U02M 1C2023 10 14.25552 00 32 41.42 +01 39 25.0          20.4 GVEU128G96
     K23U02M 1C2023 10 14.26118 00 32 38.41 +01 40 42.5          20.4 GVEU128G96
     K23U02M*KC2023 10 19.77321 23 33 10.45 +27 16 25.4          19.7 GXEU128L51
     K23U02M KC2023 10 19.77425 23 33 09.47 +27 16 45.5          19.8 GXEU128L51
     K23U02M KC2023 10 19.77528 23 33 08.54 +27 17 04.9          19.6 GXEU128L51
     K23U02M KC2023 10 19.82786 23 32 21.92 +27 33 10.9          19.6 GXEU128L51
     K23U02M KC2023 10 19.82941 23 32 20.55 +27 33 40.1          19.8 GXEU128L51
     K23U02M KC2023 10 19.83096 23 32 19.19 +27 34 08.6          19.7 GXEU128L51
     K23U02M KC2023 10 20.07524023 28 58.710+28 49 02.06         20.45GVEU128I52
     K23U02M KC2023 10 20.07623223 28 57.853+28 49 20.86         21.19GVEU128I52
     K23U02M KC2023 10 20.08067823 28 53.13 +28 50 40.5          20.1 GXEU128858
     K23U02M KC2023 10 20.08692623 28 47.45 +28 52 36.0          20.5 GXEU128858
     K23U02M KC2023 10 20.09311223 28 41.81 +28 54 30.5          20.2 GXEU128858
     K23U02M KC2023 10 20.12599 23 28 10.32 +29 04 32.3          20.8 VqEU128734
     K23U02M KC2023 10 20.13012 23 28 06.54 +29 05 48.6          20.2 VqEU128734
     K23U02M KC2023 10 20.13415 23 28 02.80 +29 07 02.7          21.3 VqEU128734
     K23U02M  C2023 10 20.22936323 26 38.286+29 36 09.06         20.7 GVEU128U74
     K23U02M  C2023 10 20.23395023 26 34.061+29 37 32.11         20.7 GVEU128U74

Observer details:
734 Farpoint Observatory, Eskridge.  Observers D. Cromer, G. Hug, D. Goodin,
    R. Valentine.  Measurer D. Cromer.  0.69-m f/3.54 reflector + CCD.
858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.51-m f/8.1
    Schmidt-Cassegrain + CCD.
G96 Mt. Lemmon Survey.  Observer D. C. Fuls.  Measurers B. Gray, D. Rankin, F.
    C. Shelly.  1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station.  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.  1.0-m
    prime focus + CCD.
L51 MARGO, Nauchnyi.  Observer G. Borisov.  0.50-m f/1.9 reflector + CCD.
U74 JPL SynTrack Robotic Telescope 2, Auberry.  Observers N. Saini, C. Zhai,
    R. Trahan, M. Zhan, M. Shao.  0.36-m Reflector + CCD.

Orbital elements:
2023 UM2                                                 Earth MOID = 0.0596 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M 318.10834              (2000.0)            P               Q                  
n   0.54524389     Peri.   50.68420     +0.34618365     -0.93227933             
a   1.4839144      Node    19.84536     +0.73718685     +0.20113105             
e   0.3476476      Incl.   18.00582     +0.58026927     +0.30066851             
P   1.81           H   25.11          G   0.15           U   9                  
Residuals in seconds of arc
231014 G96  0.2-  0.4+    231019 L51  0.0   0.3-    231020 734  0.1+  0.5-
231014 G96  0.2+  0.3-    231019 L51  0.2+  0.2-    231020 734  0.2+  0.1-
231014 G96  0.0   0.1-    231020 I52  0.2-  0.0     231020 734  0.3-  0.0
231019 L51  0.5+  1.0-    231020 I52  0.3+  0.4+    231020 U74  0.3-  0.6+
231019 L51  0.3-  0.1-    231020 858  0.0   0.3+    231020 U74  0.2+  0.1-
231019 L51  0.5-  0.3+    231020 858  0.3-  0.0
231019 L51  0.2-  1.1-    231020 858  0.8-  0.2-

Ephemeris:
2023 UM2                 a,e,i = 1.48, 0.35, 18                  q = 0.9680
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 09 20    01 49 24.3 -29 52 24   0.2228  1.1824   139.3    33.6    23.6
...
2023 10 05    01 22 33.3 -20 10 25   0.1219  1.1106   153.4    23.8    21.9
...
2023 10 13    00 42 16.6 -02 47 30   0.07957 1.0758   167.6    11.5    20.5
...
2023 10 19    23 43 33.7 +23 19 55   0.06345 1.0520   150.6    27.7    20.5
2023 10 20    23 29 57.4 +28 26 16   0.06295 1.0483   145.1    32.9    20.6
2023 10 21    23 15 00.6 +33 27 56   0.06315 1.0446   139.5    38.2    20.7
...
2023 10 27    21 17 47.2 +55 55 10   0.07706 1.0239   110.8    65.2    21.9
...
2023 11 04    18 36 55.9 +63 12 49   0.1140  1.0007    91.1    82.3    23.3
...
2023 11 19    16 30 07.4 +59 47 45   0.1933  0.9732    79.9    88.9    24.6

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-U128

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