C/2012 S1(ISON)和 C/2011 W3 ( Lovejoy )浴火重生之 SOHO C3照片测光...
本帖最后由 suhuasky 于 2013-11-29 21:09 编辑C/2012 S1(ISON)和 C/2011 W3 ( Lovejoy )浴火重生之 SOHO C3照片测光及光变曲线比较(目视比较星测光法):C/2011 W3的测量数据见:http://t.cn/8k4wv5y
1311270141:
2.5
1311270830:
2.0
1311270930:
1.5
1311271242:
1.2
1311271407:
1.0
1311271507:
0.9
1311271806
-1
1311272111
-2
1311280030
-2.5
1311280330
-2.5
1311280630
-2.3
1311280930
-2.0
1311281230
-1.5
1311281330
0
1311281430
1.0
1311281506
1.5
1311281512
2.0
1311281528
2.5
1311282207
4.5
1311282218
4.4
1311282230
4.3
1311282259
4.2
1311282318
3.8
1311282330
3.5
1311290007
3.0
1311290030
2.5
1311290138
2.0
1311290224
1.8
1311290331
1.5
1311290430
1.2
1311290530
1.0
1311290630
0.8
1311290730
0.5
1311290830
0.3
1311290911
0.2
光变曲线:
从光变去先看,0等左右可能就是重生后的亮度峰值了,12月极难观测了。
C/2011 W3 ( Lovejoy ):
现在问题是ison还有没有核。。。 唉 。。。如果能达到世纪级那我这生算值了。。。没有什么比这更值得了就算中了500万,看着是不是说大概就-6到-7等的样子啊?不会看图啊 啥猜的 急速流星 发表于 2013-11-29 22:23
唉 。。。如果能达到世纪级那我这生算值了。。。没有什么比这更值得了就算中了500万,看着是不是说大概就-6 ...
不可能啦啦啦啦 ISON亮度报告:截止11月29日14:34UT,近日点之后,ISON大约在世界时9点(北京时间17点)达到0.2等左右,亮度逐渐走平并略有下降,不过0.2-0.4的亮度已经维持了6、7小时,彗星相当坚强,在我生成的这个动画中还可以看到左侧的彗尾随着CME快速弧形扩散。
彗尾继续变长,彗头变暗了。
如果ISON没有散架的话,现在应该是有可能在晨光观测到的。
YY它现在就像金星一样明亮地在地平线上露头。。。:'(
ISON亮度及光变曲线更新:ISON在世界时9点前后达到最亮约0.2,从14-15时UT开始衰减,截止2230UT,亮度已经降到1.2等,每小时下降约0.1。
左上角新的彗尾会越长越长的,只是这彗核亮度:L继续等待中,加油啊ISON! Sungrazer Comets @SungrazerComets
We can't tell if #ISON is in one piece of many. It's about mag 5 now and fading.
Karl Battams一小时前发推特说彗星亮度约5等并在继续变暗。
Sungrazer Comets @SungrazerComets1时
Oops.. that last tweet should have said: "We can't tell if #ISON is in one piece OR many" C/2012 S1 ( ISON )
http://www.aerith.net/pictures/jager/s/2012s120121112fullllast_2.jpg It was expected to be a great comet as it approached to the sun down to only 0.01 A.U. on Nov. 28. It brightened up to -2.5 mag at best. However, it rapidly faded out at the perihelion passage. It was 2-3 mag just after the perihelion passage (Nov. 29). In the Northern Hemisphere, it will appear in the morning sky again soon. It approaches to the earth down to 0.4 A.U. from mid December to early January, and it will be observable in excellent condition in the Northern Hemisphere. Probably the dust remnant will be visible around 8-9 mag. It is not observable in the Southern Hemisphere.
Date(TT)R.A. (2000) Decl. Delta r Elong.m1 Best Time(A, h)Nov. 3016 21.43-16 21.2 0.913 0.114 5 3.2 5:19 (280,-15)Dec.716 12.14 -2 36.3 0.690 0.436 22 7.0 5:24 (275,1)
峰值亮度约-2.5,和我前面目测的基本一致。
页:
[1]