[Iaude] MPEC R140: 2023 QB20 [a=3.21,e=0.69,i=0.6,H=26.6]

[mpec at marsden.cfa.harvard.edu]

M.P.E.C. 2023-R140                           Issued 2023 September 11, 16:37 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 QB20                                    


Observations:
     K23Q20B* C2023 08 27.32422 21 32 19.70 -17 40 56.7          18.00gUER140I41
     K23Q20B  C2023 08 27.32457 21 32 21.22 -17 40 47.7          18.00gUER140I41
     K23Q20B  C2023 08 27.36088 21 35 03.32 -17 24 11.0          17.69RUER140I41
     K23Q20B  C2023 08 27.36122 21 35 04.86 -17 24 01.3          17.69RUER140I41
     K23Q20B 1C2023 08 27.98689 22 17 49.28 -12 51 50.0          18.5 GVER140C40
     K23Q20B 1C2023 08 27.98858 22 17 55.17 -12 51 08.7          18.8 GVER140C40
     K23Q20B 1C2023 08 27.99024 22 18 00.92 -12 50 26.9          19.0 GVER140C40
     K23Q20B KB2023 08 28.91915 23 04 09.57 -07 17 03.8          18.9 GXER140M45
     K23Q20B KB2023 08 28.92528 23 04 23.62 -07 15 11.0                XER140M45
     K23Q20B KB2023 08 28.93303 23 04 41.24 -07 12 49.5                XER140M45

Observer details:
C40 Kuban State University Astrophysical Observatory.  Observers A. Ivanov, A.
    Barcov, V. Ivanov, V. Lysenko, N. Yakovenko, N. Ivanova, N. Gorbunov, G.
    Kurbatov, P. Shchukin, V. Roshchupko.  Measurer A. Ivanov.  0.51-m f/8
    reflector + CCD.
I41 Palomar Mountain--ZTF.  Observers K. Venkataramani, T. Prince, G. Helou,
    Q.-Z. Ye, D. Kulkarni, V. Swain, C. Y. Hsu, Y. Cheng, T. Batra.  Measurers
    F. Masci, D. Shupe, K. Venkataramani, Q.-Z. Ye.  1.2-m f/2.44 Oschin-
    Schmidt + CCD.
M45 Starhopper Observatory, Sfantu Gheorghe.  Observer F. Ursache.  0.41-m
    f/7.5 reflector + CMO.

Orbital elements:
2023 QB20                                                Earth MOID = 0.0019 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Alexandersen            
M   5.54050              (2000.0)            P               Q                  
n   0.17163857     Peri.  336.37081     +0.69033648     +0.72347733             
a   3.2067083      Node   337.28528     -0.66211972     +0.62953443             
e   0.6877323      Incl.    0.59547     -0.29160422     +0.28331424             
P   5.74           H   26.62          G   0.15           U   9                  
Residuals in seconds of arc
230827 I41  0.3+  0.3+    230827 C40  0.0   0.5+    230828 M45  0.4+  0.2-
230827 I41  0.4-  0.3-    230827 C40  0.2+  0.4-    230828 M45  0.1+  0.3-
230827 I41  0.2-  0.2-    230827 C40  0.2-  0.0
230827 I41  0.2+  0.2+    230828 M45  0.4-  0.8-

Ephemeris:
2023 QB20                a,e,i = 3.21, 0.69, 1                   q = 1.0014
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 08 12    14 18 03.2 -16 46 43   0.08404 1.0010    79.1    96.2    24.7
...
2023 08 27    21 05 39.5 -19 59 36   0.01499 1.0246   159.6    20.1    18.6
...
2023 09 04    00 42 46.7 +05 44 05   0.05284 1.0542   148.8    29.7    21.6
...
2023 09 10    01 03 40.8 +08 24 41   0.08780 1.0833   148.8    28.8    22.8
2023 09 11    01 05 25.6 +08 38 00   0.09376 1.0886   149.3    28.2    22.9
2023 09 12    01 06 53.9 +08 49 13   0.09976 1.0941   149.8    27.5    23.0
...
2023 09 18    01 11 50.9 +09 27 20   0.1366  1.1297   154.3    22.7    23.6
...
2023 09 26    01 13 03.8 +09 37 38   0.1888  1.1836   161.8    15.4    24.2
...
2023 10 11    01 10 22.6 +09 16 24   0.3009  1.2991   176.9     2.4    24.8

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-R140