观测条件很好的C/2006 L1 ( Garradd )
彗星10月中旬就出现在SWAN上，目前已经亮于预报值近5等，并接近冲日位置，很适合小望远镜的观测。MPEC预报：
C/2006 L1 (Garradd)
Orbital Elements
The following orbital elements are taken from MPC 57794:
C/2006 L1 (Garradd)
Epoch 2006 Nov. 1.0 TT = JDT 2454040.5
T 2006 Oct. 18.0007 TT MPC
q 1.462107 (2000.0) P Q
z +0.001781 Peri. 338.4088 -0.4781540 +0.6543134
+/-0.000140 Node 101.7609 +0.8676576 +0.2485024
e 0.997397 Incl. 143.2423 +0.1361578 +0.7142272
2006 12 06 07 56.48 +39 53.6 0.751 1.617 136.8 24.6 13.5
2006 12 11 06 56.92 +47 07.0 0.728 1.647 147.8 18.6 13.5
2006 12 16 05 41.16 +51 42.2 0.748 1.680 151.5 16.2 13.6
2006 12 21 04 24.48 +52 37.2 0.808 1.715 146.1 18.7 13.9
2006 12 26 03 23.23 +50 53.4 0.900 1.751 136.7 22.7 14.2
日本aerith网站预报：
It had not been observed for a long time since June. In October, after it appeared again in the morning sky, it brightened very rapidly from 13 mag up to 10 mag. Now it is 9.1 mag (Nov. 26, Juan Jose Gonzalez). It will be at opposition in December and it is coming closer to the earth. So it will keep visible visually at 9-10 mag for a while until December. Bright and large, but weakly condensed. It keeps observable in excellent condition in the Northern Hemisphere. It will fade out rapidly after January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 2 8 31.25 33 16.2 0.803 1.599 126 8.8 3:51 ( 0, 88)
Dec. 9 7 24.64 43 58.4 0.738 1.640 143 8.8 2:19 (180, 81) 不容易观测呀！月亮的影响太大了！ :roll: 月底亮度还在9.5等左右，月光干扰消失 能否提供预报星图，如果目视观测不行，可以尝试摄影观测。 上面有星历表啊 更新skymap的彗星数据就可以看到了
页:
[1]