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
MPC@CFA.HARVARD.EDU
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The Dec. 17 observations reported therein have been withdrawn by the observer.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
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