顶起！
是啊 不能把这颗忘了哈::070821_13.jpg::
很牛支持
顶一个！
支持::070821_14.jpg::
C/2011 L4 PanSTARRSC/2011 L4 (Panstarrs)
2012 Oct. 01.00 UT: m1=10.8, Dia.= 0'.7, 30.5 cm schmidt-cassegrain
2012 Oct 1.45UT, M1 11.0, DC 7, Dia 2.0'
Coma elongated to the ESE
Stellar central condensation
No tail visible
30 cm Dobsonian
2012 Oct 04.38 UT; m1= 11.9; Dia= 1.2? DC= 6; 25cm L, f:5
(x83)
Coma elongated to the East, small bright central condensation,
outer coma does not enhance in Swan Band filter, central condensation dims but
is visible in Swan Band filter.
Comparison stars checked using APASS data in Guide 9.0;
Method= M; Cat= AQ
好贴留名，关注此彗星。。。
本帖最后由 suhuasky 于 2012-10-7 23:19 编辑
译，来源：Robotic telescope FRAM
彗星C/2011 L4 (Panstarrs)是一颗非常有趣的彗星，主要是它仅在0.3AU距离绕
过太阳。这是一颗很活跃的彗星，因此在2013年春季北半球有很大的机会成为非
常明亮的肉眼彗星。我们从2012年以来定期监测这颗彗星。
使用R过滤监测彗星尘埃彗发，用整个彗发直径和分别选定彗核周围10000公里及
20000公里半径分析活动变化。
彗星活动变化非常接近明亮彗星采用的平均速率公式：
m1 = 3.46 + 5*log(D) + 10.36*log(r) mag
关于绝对星等3.46，可能是彗核高度活跃，整个尘埃彗发直径从2012年二月的
50000公里成长到2012年十月的120000公里。
分析是基于二月21日到2012年十月之间35个彗发总亮度和32个多孔径测量。
如果彗星将继续这一增亮趋势，它应该能够到达最大亮度-1等和在黑暗的天空接
近+1等以及10° - 20° 长尾。
现在北半球已经不适合观测了，等待明年春天！:victory:
到时候试着去看这颗彗星，还没见过彗星。
目前2011L4已经接近太阳视线，很难观测了，明年一月下旬将重新出现在南半球，亮度进入8等范围，期待后续观测情况。
06 三月 201300:00:0000h 02m 24.1s-15°58' 35"0.32821.097117.1-1.1
07 三月 201300:00:0000h 08m 14.5s-13°25' 43"0.31731.098516.5-1.3
08 三月 201300:00:0000h 13m 28.1s-10°49' 18"0.30911.101115.9-1.4
09 三月 201300:00:0000h 18m 03.4s-08°10' 37"0.30381.104715.5-1.5
10 三月 201300:00:0000h 22m 00.0s-05°31' 09"0.30161.109315.2-1.5
11 三月 201300:00:0000h 25m 19.0s-02°52' 21"0.30271.114515.1-1.4
12 三月 201300:00:0000h 28m 02.2s-00°15' 40"0.30701.120415.2-1.4
13 三月 201300:00:0000h 30m 12.7s+02°17' 40"0.31431.126715.5-1.3
14 三月 201300:00:0000h 31m 54.2s+04°46' 43"0.32431.133415.9-1.1
15 三月 201300:00:0000h 33m 10.7s+07°10' 49"0.33681.140416.4-0.9
16 三月 201300:00:0000h 34m 06.3s+09°29' 26"0.35131.147617.0-0.7
17 三月 201300:00:0000h 34m 44.1s+11°42' 54"0.36761.155017.8-0.5
18 三月 201300:00:0000h 35m 07.9s+13°50' 46"0.38521.162518.6-0.3
19 三月 201300:00:0000h 35m 20.3s+15°53' 24"0.40401.170219.4-0.1
20 三月 201300:00:0000h 35m 23.5s+17°51' 00"0.42371.178020.30.1
21 三月 201300:00:0000h 35m 19.5s+19°43' 53"0.44411.185821.30.3
22 三月 201300:00:0000h 35m 09.8s+21°32' 19"0.46501.193822.30.6
23 三月 201300:00:0000h 34m 55.7s+23°16' 39"0.48641.201823.20.8
24 三月 201300:00:0000h 34m 38.0s+24°57' 09"0.50801.209924.21.0
25 三月 201300:00:0000h 34m 17.7s+26°34' 07"0.52991.218025.21.2
26 三月 201300:00:0000h 33m 55.4s+28°07' 48"0.55191.226126.21.4
27 三月 201300:00:0000h 33m 31.5s+29°38' 28"0.57391.234327.21.5
28 三月 201300:00:0000h 33m 06.5s+31°06' 19"0.59611.242528.21.7
29 三月 201300:00:0000h 32m 40.7s+32°31' 35"0.61821.250829.21.9
30 三月 201300:00:0000h 32m 14.3s+33°54' 27"0.64041.259030.22.1
31 三月 201300:00:0000h 31m 47.5s+35°15' 06"0.66251.267331.22.2
01 四月 201300:00:0000h 31m 20.4s+36°33' 42"0.68451.275632.22.4
02 四月 201300:00:0000h 30m 53.1s+37°50' 22"0.70641.283933.22.5
03 四月 201300:00:0000h 30m 25.8s+39°05' 16"0.72831.292234.12.7
04 四月 201300:00:0000h 29m 58.3s+40°18' 31"0.75011.300535.12.8
05 四月 201300:00:0000h 29m 30.8s+41°30' 14"0.77171.308836.03.0
06 四月 201300:00:0000h 29m 03.2s+42°40' 31"0.79331.317136.93.1
07 四月 201300:00:0000h 28m 35.5s+43°49' 27"0.81481.325437.93.2
08 四月 201300:00:0000h 28m 07.7s+44°57' 09"0.83611.333738.83.4
09 四月 201300:00:0000h 27m 39.6s+46°03' 40"0.85731.341939.73.5
10 四月 201300:00:0000h 27m 11.2s+47°09' 06"0.87841.350240.63.6
11 四月 201300:00:0000h 26m 42.5s+48°13' 30"0.89941.358541.43.7
12 四月 201300:00:0000h 26m 13.2s+49°16' 56"0.92021.366842.33.8
13 四月 201300:00:0000h 25m 43.4s+50°19' 28"0.94101.375143.23.9
14 四月 201300:00:0000h 25m 13.2s+51°21' 06"0.96161.383444.04.0
15 四月 201300:00:0000h 24m 41.5s+52°22' 00"0.98211.391844.94.1
16 四月 201300:00:0000h 24m 09.1s+53°22' 06"1.00241.400145.74.2
17 四月 201300:00:0000h 23m 35.6s+54°21' 29"1.02271.408446.54.3
18 四月 201300:00:0000h 23m 00.6s+55°20' 11"1.04281.416847.34.4
19 四月 201300:00:0000h 22m 24.2s+56°18' 13"1.06291.425248.14.5
20 四月 201300:00:0000h 21m 46.0s+57°15' 38"1.08281.433648.94.6
21 四月 201300:00:0000h 21m 05.9s+58°12' 28"1.10261.442049.74.7
22 四月 201300:00:0000h 20m 23.5s+59°08' 43"1.12231.450550.54.8
23 四月 201300:00:0000h 19m 38.6s+60°04' 26"1.14191.459051.34.9
24 四月 201300:00:0000h 18m 50.9s+60°59' 37"1.16131.467552.05.0
25 四月 201300:00:0000h 18m 00.1s+61°54' 18"1.18071.476152.85.1
26 四月 201300:00:0000h 17m 05.7s+62°48' 30"1.20001.484753.55.2
27 四月 201300:00:0000h 16m 07.5s+63°42' 13"1.21921.493354.25.2
28 四月 201300:00:0000h 15m 04.9s+64°35' 29"1.23821.502055.05.3
29 四月 201300:00:0000h 13m 57.4s+65°28' 17"1.25721.510855.75.4
30 四月 201300:00:0000h 12m 44.4s+66°20' 40"1.27611.519656.45.5
01 五月 201300:00:0000h 11m 25.2s+67°12' 36"1.29481.528557.15.5
02 五月 201300:00:0000h 09m 59.1s+68°04' 07"1.31351.537457.75.6
03 五月 201300:00:0000h 08m 25.3s+68°55' 12"1.33211.546458.45.7
04 五月 201300:00:0000h 06m 42.6s+69°45' 51"1.35061.555559.15.8
05 五月 201300:00:0000h 04m 50.0s+70°36' 05"1.36901.564759.75.8
06 五月 201300:00:0000h 02m 46.2s+71°25' 52"1.38731.573960.45.9
07 五月 201300:00:0000h 00m 29.5s+72°15' 13"1.40551.583261.06.0
08 五月 201300:00:0023h 57m 58.2s+73°04' 06"1.42371.592561.66.0
09 五月 201300:00:0023h 55m 10.1s+73°52' 31"1.44171.602062.26.1
10 五月 201300:00:0023h 52m 02.8s+74°40' 26"1.45971.611662.86.2
11 五月 201300:00:0023h 48m 33.3s+75°27' 48"1.47761.621263.46.2
12 五月 201300:00:0023h 44m 37.9s+76°14' 37"1.49541.630964.06.3
13 五月 201300:00:0023h 40m 12.5s+77°00' 49"1.51321.640864.66.4
14 五月 201300:00:0023h 35m 11.7s+77°46' 21"1.53081.650765.16.4
15 五月 201300:00:0023h 29m 29.4s+78°31' 07"1.54841.660765.76.5
16 五月 201300:00:0023h 22m 57.7s+79°15' 04"1.56591.670966.26.6
17 五月 201300:00:0023h 15m 27.3s+79°58' 02"1.58331.681166.86.6
18 五月 201300:00:0023h 06m 46.4s+80°39' 55"1.60071.691467.36.7
19 五月 201300:00:0022h 56m 40.9s+81°20' 29"1.61801.701967.86.7
20 五月 201300:00:0022h 44m 53.1s+81°59' 30"1.63521.712568.36.8
21 五月 201300:00:0022h 31m 02.3s+82°36' 39"1.65241.723268.86.9
22 五月 201300:00:0022h 14m 44.0s+83°11' 31"1.66941.734069.26.9
23 五月 201300:00:0021h 55m 31.8s+83°43' 33"1.68641.744969.77.0
24 五月 201300:00:0021h 32m 59.9s+84°12' 05"1.70341.756070.17.0
25 五月 201300:00:0021h 06m 49.9s+84°36' 19"1.72031.767270.67.1
根据实测亮度修正的预报
C/2011 L4
PanSTARRS
2012 Oct 10.39 UT; m1= 11.5; Dia= 1.5’; DC= 6; 25cm L, f:5
(x39)
Coma appears evenly diffuse, elongated to ENE, bright
central condensation, averted vision.
Comparison stars checked using APASS data in Guide 9.0;
Method= M; Cat= AQ
2011 L4
2012 Sept 16.49 UT, m1=[9.5, Dia,=!3' (M.-T. Hui, Luogang, Canton, China,
20.0-cm reflector; severe city lights in this direction;)
12月底的时候，彗星在南半球的低空也许可以看到，坐等最新的观测数据
关注啊，明年的彗星能否给北半球带来惊喜呢::070821_10.jpg::
12月18日2011L4重新被澳大利亚Rob Kaufman拍摄到，根据照片的对比星估计亮度为9.8等，MPEC预报10.2等。
C/2011 L4 PANSTARRS
2012 Dec. 24.30, 8.1:, 1' (A. Amorim, Florianopolis, Brazil, 0.18-m reflector,
altitude 8.5 deg., sun altitude -12 deg.);
OBS-CCD : C/2011 L4 (PANSTARRS)
Some recent aperture photometry of PANSTARRS:
2012 Dec 24.748 UT:m1=9.0, Diam=1.1',20.3cmf2.1 SCT,QHY9 8300 Unfiltered,UCAC4 R
2013 Jan 1.741 UT:m1=8.6, Diam=1.8',20.3cmf2.1 SCT,QHY9 8300 Unfiltered,UCAC4 R
2013 Jan 6.753 UT:m1=8.4, Diam=2.1',20.3cmf2.1 SCT,QHY9 8300 Unfiltered,UCAC4 R
Terry
比预报暗半等。
C/2011 L4 PANSTARRS
2013 Jan 07.70 UT; m1=8.6; Dia= 2.6�; DC= 5/6; 25cm L, f:5 (x39) [Chris Wyatt,
Walcha, NSW, Australia]
Tail to WNW, small coma with elongation sweeping back to a broad looking tail
with northern edge more pronounced and extended more than southern edge,
moonlight.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK
2013 Jan 07.72 UT; m1=8.5; Dia= 4.8�; DC= 4; 11x70 B [Chris Wyatt, Walcha, NSW,
Australia]
Moonlight, no tail, bright inner coma/central condensation with diffuse outer
coma. I was able to glimpse the comet using 7x50B but not good enough to make an
estimate.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK
本帖最后由 suhuasky 于 2013-1-9 01:21 编辑
C/2011L4近况 Jan 7.70UT, m1 8.0, Dia 3.5 ', dc 5/.Coma brighter towards the centre.No tail observed,11x70mm（Astronomical Society of Victoria Melbourne Australia） Jan 7.31UT: m= 8.0, Dia= 2',... DC=4, ...10cm R (25x)...Willian Souza(Sao Paulo,Brazil) MPEC标准预报9等。