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Comets & Asteroids - Summary for December 2016

2 Feb 2017, 09:24 UTC
Comets & Asteroids - Summary for December 2016
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During the month of December 2016, 1 new comet has been discovered. "Current comet magnitudes" & "Daily updated asteroid flybys" pages are available at the top of this blog (or just click on the underline text here). The dates below refer to the date of issuance of CBET (Central Bureau Electronic Telegram) which reported the official news & designations.- Comet DiscoveriesDec 21 Discovery of C/2016 X1 (LEMMON)- Other newsDec 13 Image of the Kuiper belt object Orcus and its moon Vanth posted on twitter by M. Brown: "The ALMA radio telescope/interferometer detects the heat coming from Orcus ~4 billion miles away and separately from its moon Vanth."Credit: ALMA - M. BrownDec 20 Man-To Hui & David Jewitt published on Arxiv the follwing paper "Non-Gravitational Acceleration of the Active Asteroids" where they present an astrometric investigation of 18 active asteroids in search of non-gravitational acceleration. "Comets can exhibit non-gravitational accelerations caused by recoil forces due to anisotropic mass loss. So might active asteroids."Dec 23 CBET 4339 reports that a group of observers obtained lightcurves of the minor planet (12008) KANDRUP during July 2007, which were typical of binary synchronous asteroids. "The period is around 1.371 day. "The monitoring until January 2008 ...

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