• MPC Preparation (Info)

  • MPEC 2015-Y31 : RETRACTION OF 2015 YB

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    M.P.E.C. 2015-Y31                                Issued 2015 Dec. 19, 01:00 UT
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  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
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
                                 RETRACTION OF 2015 YB
         The designation 2015 YB, announced on MPEC 2015-Y15, is being retracted.
    The Dec. 17 observations reported therein have been withdrawn by the observer.
    In addition, E. Christensen (PI, Catalina Sky Survey) informs us that the
    first 703 observation is involved with a background source and should be
    omitted.  Removing this single observation reduces the object's digest2 score
    (based solely on the Dec. 16 observations) to only 50.  The object was posted
    back to the NEOCP under its original temporary CSS designation, with a
    Hungaria-type orbit.  Pre-discovery observations from F51 were then located
    from Dec. 8, confirming that orbit.  The object will be removed from the NEOCP
    and designated anew, once confirming observations are obtained.
         Since the designation 2015 YB never appeared in a permanent MPC
    publication, the designation will be recorded as "omitted".
    Gareth V. Williams           (C) Copyright 2015 MPC           M.P.E.C. 2015-Y31

    Read MPEC 2015-Y30 Read MPEC 2015-Y32

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