03 ottobre 2016

2016-10-01: CBET 4326 on (5536) Honeycutt

L'asteroide (5536) Honeycutt è un asteroide doppio. Il telegramma dell'Università di Harvard certifica la scoperta della natura doppia di questo asteroide avvenuta con altri osservatori internazionali. Impagabili, al solito, i miei fratelli di stelle, con cui mi vanto di lavorare ogni giorno, Alessandro Marchini e Riccardo Papini.

Electronic Telegram No. 4326
(5536) HONEYCUTT
V. Benishek, Belgrade Astronomical Observatory; P. Pravec, Ondrejov Observatory; A. Aznar, Isaac Aznar Observatory, Centro Astronomico del Alto Turia, Aras de los Olmos, Spain; A. Marchini, R. Papini, and F. Salvaggio, Dipartimento di Scienze Fisiche, Della Terra e Dell'Ambiente, University of Siena; D. Pray, Sugarloaf Mountain observatory, South Deerfield, MA, U.S.A.; and R. Montaigut and A. Leroy, OPERA Observatory, France, report that photometric observations taken with a 0.35-m telescope at the Sopot Observatory in Serbia, a 0.35-m telescope at the Isaac Aznar Observatory, a 0.30-m telescope at the Astronomical Observatory of the University of Siena, a 0.50-m telescope at the Sugarloaf Mountain Observatory, and a 0.20-m telescope at the OPERA Observatory during 2016 Sept. 13-29 reveal that minor planet (5536) is a binary system with an orbital period of 16.325 +/- 0.005 hr. The primary shows a period of 3.5830 +/- 0.0002 hr and has a lightcurve amplitude of 0.09 mag at solar phases 11-18 degrees, suggesting a nearly spheroidal shape. Mutual eclipse/occultation events that are 0.10- to 0.19-magnitude deep indicate a secondary-to-primary mean-diameter ratio of 0.31 +/- 0.02. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars.
                         (C) Copyright 2016 CBAT
2016 October 1                   (CBET 4326)              Daniel W. E. Green


Ecco il link alla CBET: http://www.cbat.eps.harvard.edu/iau/cbet/004300/CBET004326.txt

MK-C 12" f/5.6 + GM-2000 + STL-6303
Location: Siena