[Iaude] MPEC X217: 2023 XX9 [a=1.44,e=0.34,i=12.9,H=26.4]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2023-X217                            Issued 2023 December 11, 18:37 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 XX9                                    


Observations:
     K23X09X* C2023 12 07.28376502 15 31.050+48 41 48.73         21.24GVEX217V00
     K23X09X  C2023 12 07.28929002 15 25.344+48 43 23.27         21.08GVEX217V00
     K23X09X  C2023 12 07.29478502 15 19.624+48 44 57.01         21.96GVEX217V00
     K23X09X KC2023 12 07.40291302 13 28.772+49 15 07.89         21.4 GVEX217H01
     K23X09X KC2023 12 07.40684302 13 24.809+49 16 13.73         22.0 GVEX217H01
     K23X09X KC2023 12 07.41628102 13 15.318+49 18 51.99         21.5 GVEX217H01
     K23X09X KC2023 12 08.18941901 59 33.213+53 02 46.77         22.6 GVEX217H01
     K23X09X KC2023 12 08.19458101 59 26.658+53 04 14.70         21.1 GVEX217H01
     K23X09X KC2023 12 08.20309201 59 15.874+53 06 38.92         21.1 GVEX217H01
     K23X09X KC2023 12 08.21228101 59 04.233+53 09 14.22         20.9 GVEX217H01

Observer details:
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 H. Groeller.  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 + 4x4K mosaic CCD.

Orbital elements:
2023 XX9                                                 Earth MOID = 0.0508 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Bell                    
M 288.96212              (2000.0)            P               Q                  
n   0.57019954     Peri.   53.49943     -0.47554958     -0.85573258             
a   1.4402951      Node    66.10826     +0.71885578     -0.51162171             
e   0.3416468      Incl.   12.88570     +0.50704928     -0.07723323             
P   1.73           H   26.40          G   0.15           U   8                  
Residuals in seconds of arc
231207 V00  0.1-  0.3-    231207 H01  0.1+  0.1-    231208 H01  0.1-  0.1+
231207 V00  0.2+  0.1+    231207 H01  0.3-  0.2+    231208 H01  0.1+  0.0
231207 V00  0.1-  0.3+    231208 H01  0.1+  0.2-
231207 H01  0.2+  0.2-    231208 H01  0.1-  0.1+

Ephemeris:
2023 XX9                 a,e,i = 1.44, 0.34, 13                  q = 0.9482
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 11 11    03 59 47.3 -06 33 19   0.1710  1.1444   152.3    23.7    24.0
...
2023 11 26    03 35 47.1 +08 43 14   0.08951 1.0742   166.1    12.7    22.1
...
2023 12 04    02 54 32.9 +33 24 40   0.06058 1.0407   154.4    24.1    21.5
...
2023 12 10    01 15 52.9 +61 09 31   0.05545 1.0181   125.5    52.0    22.1
2023 12 11    00 42 44.4 +65 00 04   0.05639 1.0146   120.5    56.8    22.2
2023 12 12    00 01 45.5 +68 07 17   0.05780 1.0111   115.7    61.3    22.4
...
2023 12 18    19 29 13.7 +68 34 33   0.07375 0.9920    94.1    81.7    23.6
...
2023 12 26    17 39 59.0 +56 35 09   0.1050  0.9714    80.3    93.6    24.8
...
2024 01 10    16 57 50.6 +43 45 19   0.1689  0.9499    73.7    96.5    25.9

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-X217