mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Oct 18 16:11:42 EDT 2023

M.P.E.C. 2023-U90                              Issued 2023 October 18, 20:09 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

                    EDITORIAL NOTICE: DELETION OF 2023 QB20                     

     The designation 2023 QB20, announced on MPEC R140 on Sep. 11, 2023 UT,
is being deleted.  The object was first reported by the Zwicky Transient
Facility (I41) on Aug. 27 UT and follow-up from two other sites confirmed 
an apparent NEO-like orbit.  B. Gray has identified these observations
as belonging to a previously seen artificial object with a very high 
area/mass ratio, making its position difficult to predict over long 
timescales.  Therefore, the designation 2023 QB20 is being deleted and will 
be listed as omitted.

M. P. C. Staff               (C) Copyright 2023 MPC           M.P.E.C. 2023-U90

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