[Iaude] MPEC U99: 2023 UN1 [a=1.27,e=0.34,i=27.6,H=21.6,PHA]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Thu Oct 19 02:38:26 EDT 2023 

M.P.E.C. 2023-U99                              Issued 2023 October 19, 06:35 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 UN1                                    


Observations:
     K23U01N*1C2023 10 17.23464023 56 41.662-12 04 24.92         20.94GVEU099G96
     K23U01N 1C2023 10 17.24028223 56 40.279-12 04 16.14         21.30GVEU099G96
     K23U01N 1C2023 10 17.24591423 56 38.900-12 04 07.25         21.51GVEU099G96
     K23U01N 1C2023 10 17.25156523 56 37.568-12 03 59.15         21.52GVEU099G96
     K23U01N  C2023 10 17.28935723 56 28.704-12 03 01.97         21.3 GVEU099H01
     K23U01N  C2023 10 17.29331123 56 27.786-12 02 55.66         21.6 GVEU099H01
     K23U01N  C2023 10 17.30408323 56 25.267-12 02 39.43         21.9 GVEU099H01
     K23U01N  C2023 10 17.31000223 56 23.884-12 02 30.42         21.2 GVEU099H01
     K23U01N KC2023 10 17.49155223 55 42.93 -11 57 31.7          21.1 GVEU099474
     K23U01N KC2023 10 17.49627023 55 41.86 -11 57 23.6          21.9 GVEU099474
     K23U01N KC2023 10 17.50098723 55 40.77 -11 57 17.1          21.4 GVEU099474
     K23U01N KC2023 10 17.50570423 55 39.64 -11 57 09.9          21.7 GVEU099474
     K23U01N  C2023 10 18.21156 23 53 00.56 -11 39 25.9          21.3 GVEU099I52
     K23U01N  C2023 10 18.21698 23 52 59.28 -11 39 16.7          21.7 GVEU099I52
     K23U01N  C2023 10 18.22240 23 52 58.04 -11 39 09.4          21.8 GVEU099I52
     K23U01N  C2023 10 18.22783 23 52 56.84 -11 38 59.7          21.2 GVEU099I52
     K23U01N  C2023 10 19.21797223 49 15.773-11 13 01.66         22.3 GVEU099H01
     K23U01N  C2023 10 19.22258123 49 14.721-11 12 54.33         21.9 GVEU099H01
     K23U01N  C2023 10 19.23237123 49 12.480-11 12 38.59         22.0 GVEU099H01
     K23U01N  C2023 10 19.23857623 49 11.085-11 12 28.82         21.9 GVEU099H01

Observer details:
474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M.
    Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
G96 Mt. Lemmon Survey.  Observer D. Rankin.  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.  1.5-m reflector + 10K 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.
I52 Steward Observatory, Mt. Lemmon Station.  Observer G. J. Leonard.
    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
    f/2.0 prime focus + CCD.

Orbital elements:
2023 UN1                                            PHA, Earth MOID = 0.0319 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M 244.64942              (2000.0)            P               Q                  
n   0.68461121     Peri.  119.89675     -0.74066971     -0.65103389             
a   1.2749898      Node    21.00072     +0.33442933     -0.57155972             
e   0.3369710      Incl.   27.59747     +0.58272240     -0.49947409             
P   1.44           H   21.66          G   0.15           U   9                  
Residuals in seconds of arc
231017 G96  1.0+  0.2-    231017 H01  0.1-  0.0     231018 I52  0.3-  0.8-
231017 G96  0.2+  0.1+    231017 474  0.1-  0.4-    231018 I52  0.6+  0.5+
231017 G96  0.7-  0.4+    231017 474  0.3+  0.5+    231019 H01  0.0   0.0
231017 G96  0.8-  0.1-    231017 474  0.4+  0.2-    231019 H01  0.0   0.0
231017 H01  0.1-  0.1-    231017 474  0.0   0.2-    231019 H01  0.1-  0.1+
231017 H01  0.0   0.2+    231018 I52  0.1-  0.4-    231019 H01  0.2+  0.0
231017 H01  0.1-  0.0     231018 I52  0.5-  0.4+

Ephemeris:
2023 UN1                 a,e,i = 1.27, 0.34, 28                  q = 0.8454
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 09 19    01 35 11.6 -18 12 51   0.5840  1.5319   148.1    20.3    22.4
...
2023 10 04    00 48 01.7 -16 23 38   0.4977  1.4768   159.4    13.8    21.8
...
2023 10 12    00 17 01.7 -14 05 39   0.4755  1.4445   155.5    16.7    21.7
...
2023 10 18    23 53 48.3 -11 44 42   0.4708  1.4190   148.3    21.6    21.8
2023 10 19    23 50 04.3 -11 18 36   0.4710  1.4146   147.0    22.6    21.9
2023 10 20    23 46 23.9 -10 51 53   0.4714  1.4102   145.6    23.5    21.9
...
2023 10 26    23 25 51.8 -08 01 15   0.4791  1.3833   136.9    29.4    22.1
...
2023 11 03    23 03 26.2 -03 59 30   0.5006  1.3458   125.4    36.9    22.3
...
2023 11 18    22 37 36.4 +03 26 37   0.5614  1.2711   106.9    48.1    22.7

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-U99

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