[Iaude] MPEC S239: 2023 SJ7 [a=1.36,e=0.27,i=3.0,H=23.6]

Wed Sep 27 09:33:47 EDT 2023

M.P.E.C. 2023-S239                           Issued 2023 September 27, 13:32 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 SJ7                                    


Observations:
     K23S07J 1C2023 09 24.40405 02 38 04.17 +31 59 21.0          21.1 GVES239G96
     K23S07J 1C2023 09 24.41575 02 38 02.70 +31 58 55.5          21.0 GVES239G96
     K23S07J 1C2023 09 24.42155 02 38 02.07 +31 58 43.1          20.9 GVES239G96
     K23S07J* C2023 09 25.42378502 36 24.648+31 22 22.10         20.69iXES239F51
     K23S07J  C2023 09 25.43213902 36 23.606+31 22 05.17         21.35iXES239F51
     K23S07J  C2023 09 25.44051602 36 22.550+31 21 47.88         21.11iXES239F51
     K23S07J KC2023 09 26.26928402 34 57.71 +30 51 31.2                uES239H21
     K23S07J KC2023 09 26.27627902 34 56.87 +30 51 16.5          20.9 VuES239H21
     K23S07J KC2023 09 26.27907602 34 56.50 +30 51 10.3          20.8 VuES239H21
     K23S07J KC2023 09 26.28187402 34 56.19 +30 51 04.6          21.6 VuES239H21
     K23S07J KC2023 09 26.28642 02 34 57.27 +30 50 58.2          21.2 RoES239291
     K23S07J KC2023 09 26.29862 02 34 55.79 +30 50 33.3          21.2 RoES239291
     K23S07J KC2023 09 26.31083 02 34 54.31 +30 50 08.0                oES239291
     K23S07J KC2023 09 27.26229002 33 17.69 +30 15 45.6          21.0 GXES239858
     K23S07J KC2023 09 27.27249002 33 16.42 +30 15 24.9          21.0 GXES239858
     K23S07J  C2023 09 27.30811002 33 12.181+30 14 12.43         20.9 GVES239H01
     K23S07J  C2023 09 27.31167902 33 11.723+30 14 04.75         20.9 GVES239H01
     K23S07J  C2023 09 27.32360802 33 10.232+30 13 40.05         21.4 GVES239H01
     K23S07J  C2023 09 27.32895702 33 09.558+30 13 28.89         20.8 GVES239H01

Observer details:
291 LPL/Spacewatch II.  Observer M. T. Read.  1.8-m f/2.7 reflector + CCD.
858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.51-m f/8.1
    Schmidt-Cassegrain + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, P. Minguez, A.
    Schultz, I. Smith.  Measurers K. Chambers, T. de Boer, J. Bulger, J.
    Fairlamb, H. Gao, M. Huber, C.-C. Lin, T. Lowe, E. Magnier, P. Minguez, Y.
    Ramanjooloo, A. Schultz, I. Smith, R. Wainscoat, R. Weryk.  1.8-m Ritchey-
    Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer K. W. Wierzchos.  Measurers B. Gray, D.
    Rankin, F. C. Shelly.  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.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers T. Linder, R. Holmes, L. Horn.  0.76-m f/3.0 astrograph + CCD.

Orbital elements:
2023 SJ7                                                 Earth MOID = 0.0390 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M  27.49181              (2000.0)            P               Q                  
n   0.62279398     Peri.   80.68482     +0.60406534     +0.79604714             
a   1.3580209      Node   226.54597     -0.75000101     +0.55190338             
e   0.2736740      Incl.    2.96927     -0.26945045     +0.24841821             
P   1.58           H   23.68          G   0.15           U   9                  
Residuals in seconds of arc
230924 G96  0.6-  0.2-    230926 H21  0.1-  0.1+    230927 858  0.4-  0.0
230924 G96  0.4-  0.1-    230926 H21  0.4-  0.2-    230927 H01  0.2+  0.1+
230924 G96  1.0+  0.3+    230926 H21  0.1+  0.1+    230927 H01  0.0   0.2-
230925 F51  0.1+  0.2-    230926 291  0.8+  0.9+    230927 H01  0.0   0.0
230925 F51  0.1+  0.0     230926 291  0.8+  1.1+    230927 H01  0.1-  0.0
230925 F51  0.1-  0.0     230926 291  1.0+  1.0+
230926 H21  0.3-  0.2+    230927 858  0.2+  0.1-

Ephemeris:
2023 SJ7                 a,e,i = 1.36, 0.27, 3                   q = 0.9864
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 08 28    03 17 25.0 +51 32 02   0.09213 1.0182    92.3    82.5    21.4
...
2023 09 12    02 56 56.1 +39 50 06   0.1162  1.0578   113.1    61.1    21.3
...
2023 09 20    02 45 12.4 +34 41 50   0.1293  1.0837   124.9    49.5    21.3
...
2023 09 26    02 35 23.6 +31 01 28   0.1402  1.1049   134.0    40.7    21.2
2023 09 27    02 33 41.8 +30 25 25   0.1421  1.1085   135.6    39.3    21.2
2023 09 28    02 31 59.4 +29 49 34   0.1441  1.1122   137.2    37.8    21.2
...
2023 10 04    02 21 35.2 +26 19 01   0.1570  1.1349   146.6    29.1    21.2
...
2023 10 12    02 07 56.5 +21 54 20   0.1783  1.1665   159.1    17.8    21.2
...
2023 10 27    01 47 41.7 +15 09 08   0.2349  1.2284   175.4     3.7    21.3

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-S239