73P/Schwassmann-Wachmann 最新消息

将于明年回归的，倍受人们期待的73P/Schwassmann-Wachmann 将于明年5-6月接近地球
具预测，到时的该彗星的碎片73P/Schwassmann-Wachmann -C最大亮度可能达到2-3等

近日这颗彗星的C碎片的回归首次被月亮行星实验室的C. W. Hergenrother (Lunar and Planetary Laboratory)用1.2米反射镜观测到回归
从C. W. Hergenrother 报告可以看出，这颗彗星的周期比日本著名彗星轨道的专家S. Nakano的预测提前0.43天
他将于明年的5月12日距离地球0.08AU的距离穿过地球
目前它的另两块碎片还没有被观测到，很难确定它们是否还依旧存在

相信73P/Schwassmann-Wachmann -C不会令人失望的

以下是来自德国著名彗星猎手Mike Meyer网站的消息原文件
C. W. Hergenrother (Lunar and Planetary Laboratory) reports his recovery of component C of comet 73P/Schwassmann-Wachmann with the 1.2-m reflector at Mount Hopkins. The correction to the prediction by S. Nakano (MPC 48382; 2005 Comet Handbook) is -0.43 day. This component will pass only 0.08 AU from the earth on 2006 May 12. The brightness of this and the other two components at that (if they have survived) is very uncertain and range from 2m to 8m. Orbital predictions for the components seen at previous returns by Z. Sekanina can be found in CBET 237, and the forthcoming October issue of the ICQ (27, 225). (IAUC 8623, subscription required, (CBET 237, subscription required)

:shock: 2-3等

他将于明年的5月12日距离地球0.08AU的距离

啊？穿过地球？

 

图2里的白色曲线是什么？

是彗星的轨道

明白了

73P/Schwassmann-Wachmann 3
The component C was recovered on Oct. 22 as 19.3 mag (C. W. Hergenrother). It will pass only 0.08 AU from the earth on May 12, and will be so bright as 2 mag. Expected to be visible with naked eyes. It keeps observable in good condition all through the encounter in May. Brightening rapidly, and will be visible visually as 14 mag in January. The components B and E have not been recovered yet. The component B will reach to 7 mag in May. The component E may have already disappeared because it faded before the perihelion passage in its last appearance in 2001.

Date(TT) R.A. (2000) Decl.   Delta   r   Elong. m1   Best Time(A, h)
Oct. 29 11 2.34   16 18.6   3.114   2.683   55   17.7   4:52 (276, 38)
Nov. 5 11 12.54   15 34.9   2.979   2.629   60   17.4   4:58 (281, 42)


从吉田诚的彗星网站看来
目前73P-C碎片在18等左右
且它的E碎片可能已经消失

哦 ^^  ^^

值得观测的彗星，很早就注意到它了 :mrgreen:

即便如此，情绪还是不要过分高涨。根据Ｃｏｍｅｔｓ　ｆｏｒ　Ｗｉｎｄｏｗｓ软件，将往年观测数据带入，得到三条函数式，第一条显示最亮可达１。８等，第二条为６等，第三条则为失望的９等．．．．．．但本人仍会密切关注，也真心希望来个爽的！