主題: New Comet C/2017 E1 (Borisov) 作者: peter 於 2017-03-07 13:18:58 http://d81.blog.jp/archives/69482934.html
https://www.facebook.com/Comets-and-Asteroids-140234731687/ https://twitter.com/KenichiKadota/status/838440976574103552 twitter 有圖 by Kenichi Kadota from Ageo, Japan on 2017-Mar-03 magnitude m1 = 14.0 with coma diameter 0.8 arc minutes. http://www.aerith.net/comet/catalog/2017E1/2017E1.html (http://www.aerith.net/comet/catalog/2017E1/mag.gif) 不是剛發現 ? 現在 亮度就知道 曲線如何了 http://remanzacco.blogspot.tw/2017/03/new-comet-c2017-e1-borisov.html (https://4.bp.blogspot.com/-Os5pcScL9xA/WLvjjwGRqWI/AAAAAAAACgc/tH3q-iWHdm4lys8qlTXAbdjIB5O6faMfQCLcB/s400/comet_C2017_E1_Borisov.jpg) M.P.E.C. 2017-E42 assigns the following preliminary parabolic orbital elements to comet C/2017 E1: T 2017 Apr. 9.8; e= 1.0; Peri. = 151.90; q = 0.90; Incl.= 14.54 CBET nr. 4369, issued on 2017, March 04, announces the discovery of a comet (magnitude ~17) by Gennadii Vladimirovich Borisov on three unfiltered 120-s exposures obtained on Mar. 1.10 UT with a 0.4-m f/2.3 astrograph at the "Mobil Astronomical Robotics Genon" Observatory (MARGO) near Nauchnij. The new comet has been designated C/2017 E1 (Borisov). 主題: 回覆: New Comet C/2017 E1 (Borisov) 作者: peter 於 2017-04-05 08:04:42 C/2017 E1 (Borisov):
2017 Apr. 4.19 UT: m1=8.5, Dia.=5', DC=2, 20 cm SCT (100x). |