January 6, 2015
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Japanese (translated by Yuichi Iga)
Happy new year, everyone. Thanks to all you observers for the many excellent images of Jupiter which you have been sending or posting. I regret I have not been able to acknowledge them nor to produce any reports lately, for personal reasons, but I hope to do more in the coming months. Two items were posted on our web page last month under ‘Reports - 2014/15’ (and emailed to some observers), referring to two phenomena of current interest: 1) The multiple transits and mutual phenomena of the satellites (‘phemus’). This preview was also published in the October BAA Journal. Several observers have already produced well-resolved images or movies of phemus. The best will be occurring over the next few months. Note especially the multiple transit coming up on Jan.24 (visible from N. America; low from Britain): Triple transit of ShIV, IV, ShI, I, ShII, II. At least two will be on the disk from 04:35-10:02 UT, and 4 or 5 from 06:19-08:00. At 05:46-53, IVecI while in transit: a partial eclipse, with ShIV being largely penumbral due to its distance, but expected to dim I by a very noticeable 45%. 2) The internal rotation of the GRS. Following our report of an exceptionally short rotation period of 3.6-3.8 days in 2014 Jan., Michel Jacquesson has analysed later images as well and confirmed a period of 3.8 days in Feb. and Nov. and Dec. Clear skies! John
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_______________________________ John H. Rogers, Ph.D. Jupiter Section Director, British Astronomical Association jrogers11@btinternet.com http://www.britastro.org/jupiter/ _________________________________
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Happy new year to Jupiter observers
2015年 1月 6日
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_______________________________ John H. Rogers, Ph.D. Jupiter Section Director, British Astronomical Association jrogers11@btinternet.com http://www.britastro.org/jupiter/ _________________________________
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【日本語訳:伊賀祐一 (Yuichi Iga)】 |