最新2004Q2亮度预报和相关资料

根据近段时间的实际观测，目前对2004Q2的预报亮度做了相应改进：
From:  "Jose Pablo" <jpab@o...>
Date:  Thu Dec 9, 2004  12:51 am
Subject:  analysis light curve 2004 Q2 MACHHOLZ


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Hello all:

Calculated the photometricals parameters 2004 Q2 MACHHOLZ , curve reduced light
of the comet ( 130 visuals observations ) , and for the 10 of January I obtain a
maximum visual magnitude of +3.4.

obtained photometrical equation : m1=4.6+5*log(del)+2.5*4.8*log(R)

m0=4.6 n=4.8

m1(10-01-2005)= + 3.4

more information web page : http://webs.ono.com/jpab

jpab@o...


Greetings........... J. P. Navarro Pina ......Astronomical Observatory Los
Molinos ( Murcia , Spain )




位置预报：
2004 12 11    04 38.03   -21 08.0    0.508    1.391   135.0    30.0   5.5
2004 12 16    04 28.05   -16 29.2    0.457    1.355   136.9    29.7   5.1
2004 12 21    04 17.16   -10 20.0    0.414    1.322   138.3    29.7   4.8
2004 12 26    04 05.63   -02 31.2    0.380    1.292   138.4    30.4   4.5
2004 12 31    03 53.78   +06 51.3    0.357    1.266   136.5    32.3   4.3
2005 01 05    03 41.93   +17 17.7    0.347    1.245   132.5    35.6   4.2
2005 01 10    03 30.46   +27 57.4    0.352    1.227   126.9    39.9   4.1
2005 01 15    03 19.75   +37 57.9    0.370    1.215   120.7    44.1   4.2
2005 01 20    03 10.17   +46 46.6    0.399    1.208   114.9    47.6   4.3
2005 01 25    03 02.03   +54 14.5    0.435    1.205   110.0    50.1   4.5
2005 01 30    02 55.74   +60 28.3    0.478    1.208   106.0    51.6   4.7
2005 02 04    02 51.83   +65 40.7    0.524    1.215   102.9    52.3   4.9
2005 02 09    02 51.11   +70 04.9    0.573    1.228   100.5    52.2   5.2
2005 02 14    02 54.88   +73 52.1    0.623    1.245    98.8    51.6   5.4
2005 02 19    03 05.33   +77 10.3    0.673    1.267    97.5    50.7   5.7
2005 02 24    03 26.63   +80 03.3    0.724    1.293    96.7    49.5   5.9
2005 03 01    04 07.13   +82 29.3    0.775    1.323    96.3    48.1   6.2
2005 03 06    05 21.11   +84 15.1    0.825    1.356    96.1    46.7   6.4
2005 03 11    07 12.61   +84 51.6    0.875    1.392    96.1    45.2   6.6
2005 03 16    08 58.94   +84 03.2    0.926    1.431    96.3    43.7   6.9
2005 03 21    10 07.15   +82 17.7    0.976    1.473    96.6    42.2   7.1
2005 03 26    10 46.97   +80 04.8    1.028    1.517    97.0    40.8   7.4
2005 03 31    11 11.56   +77 39.0    1.079    1.562    97.4    39.4   7.6
(注：亮度预报是老的，实际亮度要高0.5等左右）

好啊!看来Q2离我们越来越近了!兄弟们赶快做好准备啊!最佳观测时间应该是1.10日左右,希望到时候有好天气!

高半等啊！那极大3.5等了？好家伙！

那个经天图有没有近期的？

美国航天局最新的天文报告说，从现在起直至明年1月上旬，生活在北半球的人们甚至不需要借助望远镜，也能够看见在今年8月新发现的一颗较明亮的彗星。它现在所处的位置距北半球东南方向的地平线很近。然后每天它在天空中越升越高。

  这颗彗星是由道格拉斯·马可霍尔兹第一个发现的，所以用他的名字命名，而科学家给它起的“学名”是c/204Q2.它是一颗由岩石和冰组成的天体，在太阳的作用下，升华的水汽等被推到背向太阳的一侧，形成彗尾。明年1月5日和6日，这颗彗星距地球最近，只有3200万英里。

  现在，还只是很有经验的人能在无月而且黑暗的天空背景下用肉眼观测到它，而到12月11日以后，在新月较小，或月亮距彗星较远的晴天夜晚，将是观察的较好时机。在黑暗的旷野处，一般天文爱好者也可以看到它。

我们这里好像已经有人观测到了！
现在知道没有望远镜的难处了！

参考一下吧

^^ 希望大家都观测下。

我昨晚上在阳台上用双筒看到了。 :twisted:  :twisted:  :twisted:

[quote:7f78bc4e78="ljj"]我昨晚上在阳台上用双筒看到了。 :twisted:  :twisted:  :twisted:[/quote]
您住在哪里？

国外9－10号的观测
2004 Dec. 9.01 UT: m1=5.0, Dia.=20', DC=7...NE...Juan Jose Gonzalez ( Aralla, alt.1440 m, Leon, North Spain) [ 7x50B: m1= 5.1, Dia.=20', DC=6; Ion tail: 0.8 deg in p.a. 355 deg, dust tail: 0.6 deg in p.a. 285 deg ]
2004 Dec. 9.03 UT: m1=5.3, Dia.=16', DC=5...7x52 B...Luis Alberto Mansilla (Asociacion Santafesina de Astronomia, Rosario, Argentina).[Method used: Morris; Clouds interference]
2004 Dec. 9.08 UT: m1=5.3, Dia.=15', DC=6... Dust Tail 0.2 deg in PA 280deg,...Ion Tail 0.1deg in PA330deg...11x80B...Willian Souza(Sao Paulo,Brazil)
2004 Dec. 9.29 UT: m1=5.0, Dia.=16', DC=6, Tails 1.75 deg. dust and 2.75 deg. gas...10x50 B...Charles S. Morris (Fillmore, CA) [Dust tail was more obvious than the gas tail even though the gas tail was longer. Comet seen with NE.]
*2004 Dec. 9.95 UT: m1=5.3, Dia.=20', DC=6...8x56 B...Rafael Benavides (Posadas, Cordoba, Spain))
*2004 Dec. 9.99 UT: m1=5.3, Dia.=12', DC=5, No Tail...12x60 B...Ana Paula Correia (Esposende, Portugal) [Bobrovnikoff method]
*2004 Dec. 10.00 UT: m1=5.3, Dia.=10', DC=5, No Tail...10x50 B...José Rodrigues Ribeiro (Esposende, Portugal) [Bobrovnikoff method]
*2004 Dec. 10.04 UT: m1=4.9, Dia.=13', DC=3 ...Tail 0,4 deg ... 10x50B...Francisco A. Rodriguez Ramirez (Montaña Cabreja, Gran Canaria, Canary Islands)
*2004 Dec. 10.16 UT: m1=5.2, Dia= 10', DC= 5/6...10x50 B...Mariano Ribas (Planetario de Buenos Aires, Argentina)
*2004 Dec. 10.27 UT: m1=4.9, Dia.=16', DC=6, Tails 2.0 deg. in PA 7 and 2.75 deg. in PA 264...10x50 B...Charles S. Morris (Fillmore, CA) [Although the images I have looked at don't seem to show it, visually there seems to be a broad faint, milky fan between the two tails. Comet seen with NE.]
*2004 Dec. 10.27 UT: m1=4.4, Dia=15'; DC=6; Tail 0.5 degree dust tail....10x50 B....Eric A. Jacobson (Mesa, AZ)
*2004 Dec. 10.61 UT: m1=4.5, Dia.=18', DC=5/... 10x70R ...Seiichi Yoshida (Kanagawa, Japan)
*2004 Dec. 10.61 UT: m1=4.9, Dia.=20'.0, DC=4/9, 15x80B...John Drummond, (Gisborne, New Zealand) [Q2 looking huge and bright in binoculars. Large bright coma. 50* alt in the NW. Stellar LM = 6.0 (NE)].
*2004 Dec. 10.68 UT: m1=4.9, Dia.~15', DC=5...10x50 B..Arvind Paranjpye (Pune, India) [A bit hazy sky ]

七楼的人兄，你用的星图软件事那个？

能有百武彗星那么亮吗?俺不太懂啊!

12月10－16日观测数据：
2004 Dec. 10.87 UT: m1=4.5, Dia--, DC=6...NE...T. Scarmato (Calabria, Italy) [Comet more condensed, in binoculars the two tails are clearly visible. In-Out Method]
2004 Dec. 10.88 UT: m1=4.8, Dia.=20', DC=7 ...NE...Javor Kac (Trije Kralji, Slovenia) [Comet observed under ZLM 6.9 skies. Coma was too large to allow defocusing stars to the same diameter, thus only NE estimate.]
2004 Dec. 10.90 UT: m1=5.3, Dia.=18', DC=5... 16x80 B... Radek Grochowski (Swidnica, Poland) [comet hardly visible to the naked eye, in binoculars only faint trace of dust tail visible]
2004 Dec. 10.91 UT: m1=5.2, Dia.=10', DC=7,  Tail= 20'...  8cm B (11x)...Carlos Labordena (Castellon, Spain).
2004 Dec. 10.93 UT: m1=4.8, Dia.=14', DC=6...7x50B...Timo Karhula (Virsbo, Sweden) [First found with Canon 18x50 IS binoculars as a large, fuzzy ball. A stubby tail pointing northwards suspected. Culminating at altitude 9°.]
2004 Dec. 10.94 UT: m1=4.9, Dia.=16´, DC=5...15x110B....Erwin Kurz (Knittelfeld, Austria) [easy object, also under bright city lights]
2004 Dec. 10.97 UT: m1=4.5, Dia.=20', DC=6...B 10X50...Jose Pablo Navarro Pina  (El Palmar, Murcia , Spain)
2004 Dec. 11.00 UT: m1=5.0, Dia.=13', DC=6, No Tail...12x60 B...Ana Paula Correia (Esposende, Portugal) [Bobrovnikoff method]
2004 Dec. 11.01 UT: m1=4.9, Dia.=12', DC=6, No Tail...10x50 B...José Rodrigues Ribeiro (Esposende, Portugal) [Bobrovnikoff method]
2004 Dec. 11.01 UT: m1=4.8, Dia.=21', DC=6, No Tail ...8x56B... Jorge Almeida (Viseu, Portugal) [Morris method]
2004 Dec. 11.05 UT: m1=4.8, Dia.=15', DC=5 ...Tail 0,5 deg ... 10x50B, Francisco A. Rodriguez Ramirez (Montaña Cabreja, Gran Canaria, Canary Islands)
2004 Dec. 11.14 UT: m1=5.1, Dia.=10', DC=6...10x50B...Mariano Ribas (Planetario de Buenos Aires, Argentina)
2004 Dec. 11.26 UT: m1=4.8, Dia.=17', DC=6, Tails 2 deg. (gas) and 2.75 deg (dust)...10x50 B...Charles S. Morris (Fillmore, CA) [Comet seen with NE.]
2004 Dec. 11.50 UT: m1=4.3, Dia.=20', DC=7... NE ...Seiichi Yoshida (Gunma, Japan) [Easily visible, looking nebulous, with the naked eye. 11.51 UT: m1=4.8, Dia.=17', DC=6... 10x70R]
2004 Dec. 11.53 UT: m1=5.0, Dia.=15’, DC=5, no tail visible...10x50B…Peter Conde (Stokers Siding, NSW) [Sky very clear and dark after rains.  Comet near zenith. Zenithal limiting magnitude ~+6.0.]
2004 Dec. 11.63 UT: m1=5.0, Dia ~15', DC=5 ...7x50B...George Di Scala, (Sydney, Australia, Carnes Hill Observatory)[comet brightening well, bright coma in binoculars, however tail not visible, sky limiting magnitude: 5.2]
2004 Dec. 11.66 UT: m1=5.1, Dia.~15', DC=5...10x50 B...Arvind Paranjpye (Pune, India)
2004 Dec. 11.75 UT: m1=4.8, Dia.=27', DC=7...naked eye...Andrew Pearce (Noble Falls, Western Australia) [Estimate made with 8x40B: Dec. 11.75 UT: m1=4.9, Dia.=22', DC=6. Comet is a very impressive sight in a dark sky. Long ion tail observed 2.6 deg long in PA 5 deg. A shorter broad dust tail observed 55' long in PA 259 deg. Both tails appeared quite prominent and easily seen even in small binoculars.]
2004 Dec. 11.75 UT: m1=4.9...10x50 B... Hrishikesh Kulkarni(Pirangut, India)
2004 Dec. 11.77 UT: m1=5.3...10x50 B... Nilesh Puntambekar (Pirangut, India)
2004 Dec. 11.90 UT: m1=4.9, Dia.=16', DC=5, Tail 1.2 deg. in PA 10 deg...15x80 B..Roberto Haver (Frasso Sabino, Italy) [Naked eye m1 = 4.5]
2004 Dec. 11.90 UT: m1=4.8, Dia.=15', DC=5 ...7x50B...Javor Kac (Kostanjevec, Slovenia) [Comet observed under ZLM 6.3, hazy skies.]
2004 Dec. 11.90 UT: m1=4.7, Dia.=15', DC=7,  Tail=60' in PA=10 deg and Tail=30' in PA=260 deg... 8cm B (11x)...  . Carlos Labordena (Castellon, Spain). Two tails. One is fine , anotherone is shorter and wider.
2004 Dec. 11.91 UT: m1=4.4, Dia--, DC=6/,.....NE....T. Scarmato (Calabria, Italy) [The comet more active this nigth in 7x50 binoculras show a coma less large about 14' and a false nucleus more condensed. In-Out Method]
2004 Dec. 11.92 UT: m1=5.0, Dia.=15’, DC=7, No Tail...20x80 B...Javier Temprano (Santander, Cantabria, Spain)
2004 Dec. 11.93 UT: m1=4.7, Dia=14', DC=7...7x50B... Michal Kusiak (Zywiec, Poland) [Bobrovnikoff method used. Ion tail=0.5 deg in PA355. NELM=5.7]
2004 Dec. 11.96 UT: m1=4.5, Dia.~15', G..Sostero (Casoni Solarie, Italy) [naked eye]
2004 Dec. 12.03 UT: m1=4.8, Dia=23', DC=6, No Tail ...8x56B... Jorge Almeida (Viseu, Portugal) [Morris method; some clouds]
2004 Dec. 12.04 UT: m1=4.6, Dia.=25', DC=7...NE...Juan Jose Gonzalez ( Caldas de Luna, alt. 1250 m, León, North Spain) [ 7x50B: m1=4.7, Dia.=22', DC=6; Mountain location, very clear sky. Ion tail: 2.0 deg in p.a. 10 deg, dust tail: 0.6 deg in p.a. 285 deg ]
2004 Dec. 12.08 UT: m1=4.7, Dia.=17', DC=4 ...Tail 0,8 deg ... 10x50B, Francisco A. Rodriguez Ramirez (Montaña Cabreja, Gran Canaria, Canary Islands)
2004 Dec. 12.30 UT: m1=4.6, DC=6...10x50 B...Charles S. Morris (Fillmore, CA) [Tails and diameter about the same. Comet was close to a 6.1 mag. star...did not interfere with binocualr estimate. With NE: M1~4.6 ]
2004 Dec. 12.47 UT: m1=~5.0, Dia.=20’, DC=5? no tail visible...10x50 B...Peter Conde (Stokers Siding, NSW) [Magnitude estimate difficult due to 6th mag. Star, SAO 169584, appearing within the coma]
2004 Dec. 12.73 UT: m1=4.8, Dia.=--, DC=7...NE...Andrew Pearce (Nedlands, Western Australia) [Estimate made with 8x40B: Dec. 12.73 UT: m1=4.9, Dia.=17', DC=6. Long ion tail observed 1.8 deg long in PA 1 deg. A shorter broad dust tail observed 45' long in PA 275 deg.]
2004 Dec. 12.73 UT: m1=5.6, DC=5...10x50 B..Arvind Paranjpye (Pune, India)[thru thin sheet of haze]
2004 Dec. 12.74 UT: m1=4.9, Dia. =18', DC=7, Tail: gas tail 1.5 degrees in P.A. 358 degrees, dust tail 2.2 degrees in central P.A. 266 degrees...15x60 B...Mike Begbie (Harare, Zimbabwe) [First break in the cloud cover since December 3rd. Bobrovnikoff Method used. The comet is becoming spectacular. The coma is highly condensed and the dust tail is broad and prominent now. 12.75 UT: m1=4.5, Dia. =20', DC=7. Tail: (dust) 1 degree in P.A. 265 degrees...NE.]
2004 Dec. 12.87 UT: m1=4.8, Dia.=17’, DC=7, No Tail...20x80 B...Javier Temprano (Collada de Carmona, Cantabria, Spain)
2004 Dec. 12.89 UT: m1=4.7, Dia.=14', DC=7, dust tail 0.9 deg in PA 355 deg..18x50B...Timo Karhula (Virsbo, Sweden) [A large, fuzzy ball with a faint, stellar (pseudo-)nucleus and a faint broad tail pointing north. Position angle approximate.]
2004 Dec. 12.89 UT: m1=5.5, Dia.=N/A, DC=4 ... 7x50B ... Alexei Pace (Marsascala, Malta) Large and diffuse object, easily seen in binoculars. It was dimmer than 54 Eridani, mag 4.36, to its left but brighter than TYC 5894-1943-1, mag 6.12 just below it.
2004 Dec. 12.90 UT: m1=5.5, Dia.=N/A, DC=4 ... 7x50B ... Karen Vella (Marsascala, Malta)
2004 Dec. 12.96 UT: m1=4.6, Dia=22', DC=5 ...7x50B... Javor Kac (Kisovec, Slovenia) [Comet observed under ZLM 6.9 skies.]
2004 Dec. 13.01 UT: m1=4.6, Dia.=25', DC=7...naked eye...Juan Jose Gonzalez ( Sierra del Aramo, alt. 1240 m, Asturias, North Spain) [7x50B: m1= 4.7, Dia.=25', DC=6; Ion tail: 1.5 deg in p.a. 10 deg, dust tail: 0.6 deg in p.a. 285 deg ].
2004 Dec. 13.02 UT: m1=4.6, Dia.=18', DC=5 ...Tail 0,3 deg ... 10x50B, Francisco A. Rodriguez Ramirez (Montaña Cabreja, Gran Canaria, Canary Islands)
2004 Dec. 13.09 UT: m1=5.0, Dia.=18', DC=6...7x52 B...Luis Alberto Mansilla (OAC -Asociacion Santafesina de Astronomia, Rosario, Argentina).[Method used: Morris]
2004 Dec. 13.22 UT: m1=4.5, Dia=15', DC=4,...14x100B...ADRIAN PAULO ARQUIOLA (Observatorio Astronómico Municipal de Funes, Pcia. Santa Fe)- ARGENTINA
2004 Dec. 13.26 UT: m1=4.8, Dia=20', DC=5...8x30B...Willian Souza(Sao Paulo,Brazil) [ using 11x80B m1=4.9, DC=6, tail 0.2deg in PA280deg.]
2004 Dec. 13.71 UT: m1=5.4, DC=5...10x50 B..Arvind Paranjpye (Pune, India)[thin passing cloudes ]
2004 Dec. 13.88 UT: m1=4.3, Dia=24', DC=6... 3cm B (8x)... Sergey E. Shurpakov (Baran',Belarus)
2004 Dec. 13.88 UT: m1=4.3, Dia--, DC=7,.....NE....T. Scarmato (Calabria, Italy) [2004 12 13.88UT:m1=4.3, Dia=15', DC=6, ions tail 3deg, dust tail 0.7 deg......7x50B; Ions tail brighter since my last observation. Out-out method]
2004 Dec. 13.89 UT: m1=5.0, Dia:=20',DC=5...7x50B...Antonio Giambersio (Potenza, Italy)
2004 Dec. 13.92 UT: m1=4.5, Dia.=25', DC=5,Ion tail: 2.5 deg. in PA 10 deg, dust tail 1.7 deg in PA 285 deg.... 8x50 and 20cm Schimdt/Cassegrain at 40x...Salvatore Cefariello ( Centro Astronomico Neil Armstrong) (Monte Terminio, alt. 1250 m, Italy) [The comet was easly visible with naked eye as an elongated and diffuse object. The thin ion tail is visible in the 8x50 finder, the dust tail is large and diffuse. The sky limiting magnitude is 5.7]
2004 Dec. 13.92 UT: m1=4.7, Dia.=15', DC=6,  Tail=20'... 8cm B (11x)...  . Carlos Labordena (Castellon, Spain)
2004 Dec. 13.92 UT: m1=4.9, Dia.=11', DC=5, ... 15cm L f/5 (30x) . Marco Micheli (Pisa, Italy)
2004 Dec. 13.93 UT: m1=4.9, Dia.=10', DC=7,...8x50 Binocular (8x) ,...Diepvens (Balen,Belgium)
2004 Dec. 13.96 UT: m1=4.6: Dia=25' DC=6 ...NE... Javor Kac (Kisovec, Slovenia) [Comet observed under ZLM 6.9 skies.]
2004 Dec. 14.22 UT: m1=4.8, Dia=15':, DC=7...7x50B...Brian Adams (Zumbrota,MN)[~ 1 deg (presumably dust)tail was also visible, but comet set into local treeline before sketch/measurements could be made]
2004 Dec. 14.24 UT: m1=5.2, Dia.=17', DC=7, 40cm f/4.9 62x...Suresh Sreenivasan (Hopkins, Minnesota USA) [Very clear steady -11C. Stronger central condensation than 12/1.  Slightly bluish more stellar nucleus surrounded by irregular coma (5'N x 10'SW).  20' broad slightly arced tail P.A. 322 deg with stronger 18' thinner tail P.A. 240 deg. Morris Method]
2004 Dec. 14.25 UT: m1=4.7, Dia=20', DC=6, Dust tail 0.2 deg in PA 285, ion Tail 0.2 deg in PA355...11x80B...Willian Souza(Sao Paulo,Brazil)[visible at nake eye, m1=4.6]
2004 Dec. 14.33 UT: m1=4.5, Dia.=17', DC=6, Tails: gas - 5.33 deg. in PA 17 deg. dust fan up to 4.5 deg...10x50 B...Charles S. Morris (Lockwood Valley, CA) [Under very dark skies (NE mag. ~6.8) watching a wonderful Geminid shower. In 10x50 B, broad dust fan from PA 270 deg (30' length) to 17 deg. Tail reached 4.5 deg in PA 322. Comet was an obvious NE object. Dec. 14.35 UT: m1~4.3, Dia.~1.0 deg (this is probably coma+dust fan), DC=3...NE. It is interesting that the binocular magnitude & dia. is similar to that obtained under 5.5 mag. skies. The observed tail length is about twice as long, however.]
2004 Dec. 14.43 UT: m1=4.5, Dia.=25’, DC=7, no tail…10x50B…Peter Conde (Stokers Siding, NSW): Comet visible to naked eye. Tiny pinpoint nucleus appeared, although uncertain.  No nucleus seen 2 hours later.]
2004 Dec. 14.58 UT: m1=5.1, Dia.=~10',DC=5...11X80B...Angelito D. Sing( Makati,Philippines)[ Maybe due to the light pollution I cannot clearly discern any tail.]
2004 Dec. 14.75 UT: m1=4.7, Dia.=24', DC=8...naked eye...Andrew Pearce (Nedlands, Western Australia) [Estimate made with 8x40B: Dec. 14.75 UT: m1=4.8, Dia.=19', DC=6/. Long ion tail observed 1.5 deg long in PA 0 deg. A shorter broad dust tail observed 45' long in PA 274 deg.]
2004 Dec. 14.86 UT: m1=4.5, Dia.=20', DC=7...7x50B... Michal Kusiak (Zywiec, Poland) [Bobrovnikoff method. Comet visible with naked eye. LM=6.0]
2004 Dec. 15.00 UT: m1=4.5, Dia.=25', DC=7... naked eye ... Juan Jose Gonzalez ( Sierra del Aramo, alt. 1240 m, Asturias, North Spain) [7x50B: m1= 4.6, Dia.=25', DC=6; Ion tail: 2.0 deg in p.a. 20 deg, dust tail: 1.1 deg in p.a. 275 deg ]
2004 Dec. 15.00 UT: m1=4.7, Dia.=15', DC=6, No Tail...12x60 B...Ana Paula Correia (Esposende, Portugal) [Bobrovnikoff method, clouds]
2004 Dec. 15.01 UT: m1=4.5, Dia.=13', DC=5, No Tail...10x50 B...José Rodrigues Ribeiro (Esposende, Portugal) [Bobrovnikoff method, clouds]
*2004 Dec. 15.19 UT: m1=4.7, Dia.=23', DC=6/...7x50B...Brian Adams (Zumbrota, MN)
2004 Dec. 15.22 UT: m1=4.6, Dia.=20', DC=5/...8x30B...Willian Souza(Sao Paulo,Brazil)[tail 0.2 deg using 11x80B]
2004 Dec. 15.28 UT: m1=4.5, DC=5...10x50 B...Charles S. Morris (Fillmore, CA)
*2004 Dec. 15.88 UT: m1=4.3, Dia.=25', DC=6...7x50B... Michal Kusiak (Zywiec, Poland) [Ion tail=2.5 deg in PA=355, dust tail=0.5deg in PA285. Coma visible with NE. Morris Method.]
*2004 Dec. 15.90 UT: m1=4.5, Dia.=16', DC=6, gas tail 1.4 deg in PA 5 deg..10x50B...Timo Karhula (Västerås, Sweden) [A straight gas tail pointed upwards (mistaken as the dust tail earlier). Glimpsed for the first time naked eye despite of being right above the city.]
*2004 Dec. 15.94 UT: m1=4.5, Dia.=20', DC=5 ...Tail 0,2 deg ... 10x50B, Francisco A. Rodriguez Ramirez (Melia Tamarindos Observatory, Gran Canaria, Canary Islands)
*2004 Dec. 15.97 UT: m1=4.7, Dia.=20', DC=6,...7x50B...Alexandre Amorim(Florianopolis,Brazil)[naked eye, m1=4.6]
*2004 Dec. 16.14 UT: m1=4.6, Dia.=12', DC= 5/6...10x50B...Mariano Ribas (Planetario de Buenos Aires, Argentina)[In-out method. Very clear night. Comet is clearly brighter than just five days ago, but still is not a naked eye object in the light polluted sky of Buenos Aires]
*2004 Dec. 16.18 UT: m1=4.6, Dia.=20', DC=7, Tails: Ion - 2.2 deg in PA~20 deg, Dust - 0.8 deg in PA ~ 270 deg...7x50 B...Brian Adams (Zumbrota, MN)[Dust tail was fan from PA ~270 through ~ 0 deg]
*2004 Dec. 16.63 UT: mi=4.2, Dia. ~8', DC=6...7x50...George Di Scala (Carnes Hill Observatory, Sydney, Australia)[naked eye from mag 5.0 skies, no tail in binoculars, bright central condensation in 12 inch SCT with short tail (~15') visible, looks as though this one will exceed brightness predictions, fingers crossed]
*2004 Dec. 16.85 UT: m1=4.3, Dia=18', DC=7... 7x50B... Michal Kusiak (Zywiec, Poland) [Bobrovnikoff method]

很详细！顶上来！

注意！！！
2004 12 31    03 53.78   +06 51.3    0.357    1.266   136.5    32.3   4.3
2005 01 05    03 41.93   +17 17.7    0.347    1.245   132.5    35.6   4.2
2005 01 10    03 30.46   +27 57.4    0.352    1.227   126.9    39.9   4.1
2005 01 15    03 19.75   +37 57.9    0.370    1.215   120.7    44.1   4.2
2005 01 20    03 10.17   +46 46.6    0.399    1.208   114.9    47.6   4.3

[quote:5530533024="Astrolux"]能有百武彗星那么亮吗?俺不太懂啊![/quote]肯定没有

当然不可能。。
百武彗星当年有1等那么亮，当时在我家阳台上都肉眼可见，这次的Q2最多才3等多。。

看到。
真不错。

最近天气不错，就是忙着考试。估计怎么也得1月底才能观测上