Electronic Telegram No. 5739
Central Bureau for Astronomical Telegrams
Mailing address:  Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
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Prepared using the Tamkin Foundation Computer Network


(556068) 2014 JR_80
     B. Proudfoot, Florida Space Institute; W. Grundy, Northern Arizona 
University; D. Ragozzine, Brigham Young University; B. Holler, Space Telescope 
Science Institute; F. L. Rommel and E. Fernandez-Valenzuela, Florida Space 
Institute; and J. M. Gomez-Limon, Instituto de Astrofisica de Andaluca, report 
that the 3:2 resonant trans-Neptunian object (556068) is a wide binary where 
the secondary is 0.13 +/- 0.01 mag fainter than the primary.  The binary was 
discovered in four 350-s Hubble Space Telescope exposures taken with the 
WFC3/UVIS camera (+ F350LP filter) on 2026 June 13.  The secondary was 
separated by 0".846 in p.a. 16 deg.  At the time of the first image (June
13.58366 UT), the primary was located at R.A. = 20h42m57.81s, Decl. = 
-20d22'14".9 (equinox J2000.0).  A search through archival data from the
Canada-France-Hawaii and Cerro Tololo Blanco telescopes confirms the object's 
binary nature; those images detected a binary with separations between 0".5 
and 1".0 at six epochs from 2019 through 2023.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2026 CBAT
2026 September 14                (CBET 5739)              Daniel W. E. Green