[Iaude] MPEC U123: 2023 UH2 [a=2.49,e=0.59,i=1.8,H=25.1]

Thu Oct 19 22:40:58 EDT 2023

M.P.E.C. 2023-U123                             Issued 2023 October 20, 02:39 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 UH2                                    


Observations:
     K23U02H  C2023 10 16.27964400 52 55.703+17 47 50.20         21.90GVEU123F51
     K23U02H  C2023 10 16.30150000 52 57.642+17 48 46.50         21.56GVEU123F51
     K23U02H  C2023 10 16.31240400 52 58.556+17 49 14.21         21.68GVEU123F51
     K23U02H* C2023 10 18.31114 00 56 49.26 +19 17 37.9          21.6 GVEU123V00
     K23U02H  C2023 10 18.31664 00 56 49.83 +19 17 53.3          21.3 GVEU123V00
     K23U02H  C2023 10 18.32215 00 56 50.41 +19 18 08.3          21.8 GVEU123V00
     K23U02H  C2023 10 18.32765 00 56 50.99 +19 18 23.7          21.7 GVEU123V00
     K23U02H  C2023 10 18.35738100 56 53.931+19 19 43.60         21.2 GVEU123H01
     K23U02H  C2023 10 18.36146600 56 54.380+19 19 54.82         21.3 GVEU123H01
     K23U02H KC2023 10 18.36216 00 56 54.64 +19 19 59.6          21.6 RVEU123291
     K23U02H KC2023 10 18.36815 00 56 55.38 +19 20 15.8                VEU123291
     K23U02H KC2023 10 18.37414 00 56 55.94 +19 20 32.6          21.6 RVEU123291
     K23U02H  C2023 10 18.37718900 56 56.090+19 20 38.12         21.5 GVEU123H01
     K23U02H  C2023 10 18.38040600 56 56.459+19 20 47.06         21.4 GVEU123H01
     K23U02H KC2023 10 19.17443 00 58 46.16 +19 59 06.2          21.2 VqEU123734
     K23U02H KC2023 10 19.18837 00 58 47.76 +19 59 48.0          21.7 VqEU123734
     K23U02H  C2023 10 19.33781900 59 09.298+20 07 33.18         21.63wXEU123F52
     K23U02H  C2023 10 19.36253100 59 12.115+20 08 48.42         21.64wXEU123F52
     K23U02H  C2023 10 19.37497800 59 13.538+20 09 25.95         21.72wXEU123F52

Observer details:
291 LPL/Spacewatch II.  Observer T. H. Bressi.  1.8-m f/2.7 reflector + CCD.
734 Farpoint Observatory, Eskridge.  Observers D. Cromer, G. Hug, D. Goodin,
    R. Valentine.  Measurer G. Hug.  0.69-m f/3.54 reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, P. Minguez, A.
    Schultz, I. Smith.  Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
    Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
    Weryk.  1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, T. Lowe, P. Minguez, A.
    Schultz, I. Smith.  Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
    Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
    Weryk.  1.8-m Ritchey-Chretien + CCD.
H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
    Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + CCD.
V00 Kitt Peak-Bok.  Observer R. A. Mastaler.  Measurers M. J. Brucker, C. E.
    Woodward, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, H. Groeller, J.
    K. Hogan, R. A. Kowalski, S. M. Larson, C. Lejoly, G. J. Leonard, R. A.
    Mastaler, R. S. McMillan, D. Rankin, R. L. Seaman, A. Serrano, F. C.
    Shelly, K. W. Wierzchos.  2.25-m reflector + mosaic CCD.

Orbital elements:
2023 UH2                                                 Earth MOID = 0.0493 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Alexandersen            
M 341.79433              (2000.0)            P               Q                  
n   0.25092557     Peri.   96.93328     +0.41362427     -0.91030197             
a   2.4894655      Node   328.61809     +0.82248303     +0.38127300             
e   0.5880333      Incl.    1.79236     +0.39043134     +0.16118688             
P   3.93           H   25.12          G   0.15           U   9                  
Residuals in seconds of arc
231016 F51  0.0   0.1+    231018 H01  0.0   0.1+    231019 734  0.1+  0.2+
231016 F51  0.2+  0.1+    231018 H01  0.0   0.0     231019 734  0.3-  0.1+
231016 F51  0.2-  0.1-    231018 291  0.1-  0.0     231019 F52  0.1+  0.0
231018 V00  0.0   0.1+    231018 291  1.2+  0.4-    231019 F52  0.0   0.1+
231018 V00  0.0   0.2+    231018 291  0.1-  0.2-    231019 F52  0.1+  0.1-
231018 V00  0.0   0.2-    231018 H01  0.2-  0.1-
231018 V00  0.1+  0.1-    231018 H01  0.0   0.0

Ephemeris:
2023 UH2                 a,e,i = 2.49, 0.59, 2                   q = 1.0256
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 09 20    00 31 23.4 +07 35 12   0.3153  1.3124   165.7    10.9    23.9
...
2023 10 05    00 39 44.3 +11 55 50   0.2109  1.2096   172.5     6.2    22.6
...
2023 10 13    00 47 48.5 +15 43 11   0.1649  1.1608   170.1     8.5    22.1
...
2023 10 19    00 58 20.8 +19 50 51   0.1347  1.1279   166.9    11.6    21.7
2023 10 20    01 00 43.5 +20 41 17   0.1300  1.1227   166.3    12.1    21.7
2023 10 21    01 03 20.2 +21 34 53   0.1254  1.1177   165.7    12.7    21.6
...
2023 10 27    01 25 50.3 +28 16 19   0.1002  1.0898   162.0    16.4    21.2
...
2023 11 04    02 31 31.1 +41 23 56   0.07488 1.0596   153.7    24.5    20.8
...
2023 11 19    07 47 54.3 +48 22 12   0.07146 1.0281   121.9    54.7    21.4

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-U123