From quai@cbatmpc.harvard.edu Mon Sep 3 16:36:30 2001 Date: Mon, 3 Sep 2001 18:36:35 -0400 (EDT) From: IAUC mailing list To: iauc@boulder.swri.edu Subject: IAUC 7703: S/2001 (22) 1; 2001ed Content-Length: 2855 Circular No. 7703 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Mailstop 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 0081-0304 Phone 617-495-7440/7244/7444 (for emergency use only) S/2001 (22) 1 The Central Bureau received word of a new apparent satellite of minor planet (22) Kalliope first from Merline and over half a day later from Margot. Their reports are published below in the order received. W. J. Merline, Southwest Research Institute (SRI); and F. Menard, Observatoire de Grenoble, report for their collaboration (L. Close, University of Arizona; C. Dumas, Jet Propulsion Laboratory; and C. R. Chapman and D. C. Slater, SRI) the detection of a satellite of (22) on Sept. 2.6 UT from H-band direct imaging with the 3.6-m Canada-France-Hawaii Telescope (+ PUEO adaptive optics system) on Mauna Kea: "The brightness ratios observed are about 4.9 mag in bands J, H, and K'. A 1.3-hr baseline rules out background stars as the source and shows motion consistent with that of a satellite. A search for known background/foreground small bodies with possibly similar motion reveals no candidates brighter than mag 18. We acquired additional observations of the new object over a 3-hr span on Sept. 3. We find the secondary at the following separations and position angles: Sept. 2.5894, 0".56, 181 deg; 2.6301, 0".55, 183 deg; 3.6458, 0".28, 317 deg." J.-L. Margot and M. E. Brown, California Institute of Technology, write: "We report the discovery of a satellite to the M-class minor planet (22). The projected separation between primary and secondary was 0".51 (1000 km) on H-band images obtained on Aug. 29.6 UT using the adaptive-optics system at the 10-m W. M. Keck II telescope on Mauna Kea. The brightness ratio was measured to be 23 +/- 5, implying a diameter ratio of about 1:5. Confirming observations were obtained at the Keck II telescope on Aug. 31.6." SUPERNOVA 2001ed IN NGC 706 M. Migliardi, Cortina d'Ampezzo, Italy, reports his discovery of an apparent supernova (mag about 14.9) on unfiltered CCD images taken with a 0.5-m telescope on Sept. 2.96 and 3.01 UT in the course of the CROSS program (cf. IAUC 7373). SN 2001ed is located at R.A. = 1h51m51s.08, Decl. = +6 17'27".4 (equinox 2000.0), which is 9" east and 20" south of the nucleus of NGC 706. A CROSS image taken on 2000 Dec. 28 showed nothing at the position of the new object (limiting mag about 18.5), and it does not appear on Palomar Sky Survey red and blue plates. (C) Copyright 2001 CBAT 2001 September 3 (7703) Daniel W. E. Green