Electronic Telegram No. 5704
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)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


(532092) 2013 HU_156
     B. Proudfoot, Florida Space Institute (FSI); W. Grundy, Northern Arizona
University; D. Ragozzine, Brigham Young University; B. Holler, Space Telescope
Science Institute; and F. L. Rommel and E. Fernandez-Valenzuela, FSI, report 
that the 3:2 resonant trans-Neptunian object (532092) has an apparent 
satellite that is 1.49 +/- 0.05 mag fainter than the primary.  The presumed
satellite was discovered in four 350-s Hubble Space Telescope exposures taken 
with the WFC3/UVIS camera (+ F350LP filter) on 2026 June 7.  The satellite was 
separated by 0".107 in p.a. 45 deg from the primary.  At the time of the
first discovery image (2026 June 7.63466 UT), the primary was located at R.A. 
= 17h18m07s.94, Decl. = -2d30'32".5 (equinox J2000.0).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2026 CBAT
2026 June 11                     (CBET 5704)              Daniel W. E. Green