



ReadIAUC 8752.dvi,.ps or.PDF format.Circular No. 8751Central Bureau for Astronomical TelegramsINTERNATIONAL ASTRONOMICAL UNIONMailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)CBAT@CFA.HARVARD.EDU (science)URL http://cfa-www.harvard.edu/iau/cbat.html ISSN 0081-0304Phone 617-495-7440/7244/7444 (for emergency use only)(120347) 2004 SB_60 K. S. Noll, Space Telescope Science Institute; H. F. Levison,Southwest Research Institute; D. C. Stephens, Johns HopkinsUniversity; and W. M. Grundy, Lowell Observatory, report thedetection of a binary companion to the transneptunian object(120347) 2004 SB_60 (MPEC 2005-J26,2005-J28, MPO 88617; orbitalelements a = 41.97 AU, e = 0.109, i = 23.92 deg, epoch 2006 Sept.22.0 TT). The observations were made during 2006 July 21.900-21.925 UT with the High Resolution Camera of the Advanced Camerafor Surveys on the Hubble Space Telescope (HST), using the clearfilters with one 300-s exposure at each of four dithered positionson the detector. The two components are clearly resolved in eachimage and in the coadded image, separated by an angular distance of0".110 +/- 0".002 and differing in brightness by 2.3 magnitudes.The fainter component lies at a position angle of 154.8 +/- 0.6 degfrom the primary. The projected separation of the objects in thesky plane is 3440 +/- 60 km. The HST corrected for parallax andtracked both components of (120347) as they moved together at anaverage rate of 0".034/min.SUPERNOVAE 2006gi AND 2006gj Two apparent supernovae have been discovered on unfiltered CCDimages: 2006gi by K. Itagaki (cf.IAUC 8744; communicated by S.Nakano, Sumoto, Japan), and 2006gj by T. Puckett and D. Toth (cf.IAUC 8750).SN 2006 UT R.A. (2000.0) Decl. Mag. Offset2006gi Sept. 18.78 10 16 46.76 +73 26 26.4 16.3 30" W, 144" N2006gj Sept. 18.38 3 17 35.80 - 1 41 30.2 17.8 19".3 E, 12".1 NAdditional magnitudes from Itagaki for 2006gi in NGC 3147: Mar. 22,[19.0; June 3, [19.0; Sept. 19.399 UT, 16.4. Nothing is visible atthe location of 2006gi on the Digitized Sky Survey. Additionalmagnitudes for 2006gj in UGC 2650: 2005 Oct. 21, [19.3 (Puckett);2006 Sept. 19.13, 17.7 (D. Toth, 0.35-m TIE telescope, Las CampanasObservatory).V733 CEPHEI N. N. Samus, Institute of Astronomy, Russian Academy ofSciences, reports that the variable star reported onIAUC 8441 byPersson et al. has been given the designation V733 Cep. (C) Copyright 2006 CBAT2006 September 19 (8751) Daniel W. E. Green


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