C/2011 L4 PANSTARRS
Total magnitude and coma diameter estimates:
2013 Feb. 11.32, 5.5:, 4' (A. Amorim, Florianopolis, Brazil, 10x50 binoculars,
altitude 11 deg., nautical twilight, tail 0.3 deg in p.a. 250, clouds
interference);
C/2011 L4, 2013 Feb 19.85 UT; m1= 4.2; Dia= 2.5'; DC= 8; 10cm f4 refl
(20x); Comet observed approx 4 deg above horizon in morning sky. Lambda and
Gamma Gruis used as comparison stars as per Reinder Bouma's chart. No
atmospheric extinction correction applied, although the comet and comparison
stars were within a couple of degrees altitude of each other. The comet is
clearly brighter than Lambda Gruis (mag 4.6) Short broad tail 25' long in PA
205 deg clearly visible even in a bright sky background. [Andrew Pearce,
Nedlands, W. Australia].
4.2等了！！
http://bbs.xcstar.net/data/attachment/forum/201302/20/16334523fjzz745ack3mcp.jpg.thumb.jpg
2013 02 19 000000 21 49 58.8 -41 06 42 1.238 0.626 30.152.3 3.9 5.08 066.3 302-28 -12 0.61 114-25
2013 02 20 000000 21 59 53.3 -40 14 24 1.221 0.604 29.453.5 3.7 5.26 064.2 300-28 -12 0.70 121-22
2013 02 21 000000 22 09 49.1 -39 15 57 1.204 0.582 28.754.7 3.5 5.44 062.0 299-28 -12 0.78 129-18
2013 02 22 000000 22 19 44.0 -38 11 04 1.188 0.559 27.955.9 3.4 5.63 059.8 297-29 -11 0.86 136-14
2013 02 23 000000 22 29 35.7 -36 59 28 1.173 0.537 27.157.0 3.1 5.81 057.6 295-29 -11 0.92 142-09
2013 02 24 000000 22 39 21.8 -35 40 55 1.160 0.515 26.258.1 2.9 5.99 055.4 293-29 -11 0.96 147-04
2013 02 25 000000 22 48 59.7 -34 15 13 1.147 0.494 25.459.2 2.7 6.18 053.1 291-29 -11 0.99 150+01
2013 02 26 000000 22 58 26.9 -32 42 12 1.136 0.472 24.460.2 2.5 6.35 050.8 289-29 -10 1.00 151+07
2013 02 27 000000 23 07 40.8 -31 01 46 1.126 0.451 23.561.1 2.3 6.52 048.5 286-29 -10 0.99 148+12
2013 02 28 000000 23 16 38.8 -29 13 54 1.118 0.431 22.561.9 2.1 6.69 046.1 284-29 -10 0.95 142+16
2013 03 01 000000 23 25 18.2 -27 18 37 1.111 0.411 21.662.5 1.9 6.84 043.7 281-29 -09 0.89 135+20
2013 03 02 000000 23 33 36.4 -25 16 02 1.105 0.392 20.663.0 1.6 6.97 041.2 279-29 -09 0.81 126+24
2013 03 03 000000 23 41 30.6 -23 06 22 1.101 0.373 19.763.3 1.4 7.09 038.6 276-28 -09 0.71 117+26
2013 03 04 000000 23 48 58.0 -20 49 59 1.098 0.357 18.863.4 1.2 7.18 036.0 274-27 -09 0.60 107+27
2013 03 05 000000 23 55 55.7 -18 27 22 1.097 0.342 17.963.3 1.0 7.25 033.3 271-26 -08 0.49 096+26
2013 03 06 000000 00 02 21.1 -15 59 12 1.097 0.328 17.163.0 0.9 7.28 030.5 269-25 -08 0.38 085+24
2013 03 07 000000 00 08 11.7 -13 26 21 1.099 0.317 16.562.4 0.7 7.28 027.6 266-24 -08 0.27 074+21
2013 03 08 000000 00 13 25.3 -10 49 57 1.101 0.309 15.961.7 0.6 7.23 024.7 264-22 -07 0.17 062+17
2013 03 09 000000 00 18 00.7 -08 11 16 1.105 0.304 15.560.9 0.5 7.14 021.8 262-20 -07 0.10 051+13
2013 03 10 000000 00 21 57.5 -05 31 47 1.109 0.302 15.259.9 0.5 7.01 018.8 260-19 -07 0.04 039+08
2013 03 11 000000 00 25 16.5 -02 53 00 1.115 0.303 15.159.1 0.5 6.85 016.0 258-17 -06 0.01 027+02
这彗星现在有几等了！！！
Debug 发表于 2013-2-26 09:49 static/image/common/back.gif
这彗星现在有几等了！！！
4.2等
C/2011 L4最新报告： March 1.40UT, m1 2.4, DC 7/. Tail over 1 deg in length, PA 160. 11x70mm Binoculars Con Stoitsis Director Comet Section Astronomical Society of Victoria Melbourne Australia
C/2011 L4最新照片集中： 2013年3月1日发布：
现在还是比较接近最初的亮度预报。
现在亮度多少？10号又能达到多少？
宇宙无疆界 发表于 2013-3-4 21:44 static/image/common/back.gif
现在亮度多少？10号又能达到多少？
L4动画
热血澎湃
跟踪帖做的不错，楼主辛苦了。 学习分享了。。。要是能一直跟踪下去就更好了。