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Now it is 6.9 mag (Nov. 26, Juan Jose Gonzalez). It keeps so bright as 6-8 mag for a long time from 2011 to 2012. In the Northern Hemisphere, it will be extremely low from late November to late December. But after that, it will be observable in excellent condition again. In the Southern Hemisphere, it is not observable now. But it will be observable again in 2012 spring, although it locates low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 17 30.41 20 53.8 2.111 1.577 44 6.3 20:44 ( 92,-36)
Dec. 10 17 30.32 21 54.0 2.092 1.562 45 6.2 20:51 ( 88,-44)
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New Kreutz sungrazer comet discovered on the ground after 41-year blank since Comet C/1970 K1 (White-Ortiz-Bolelli). It will approach nearly to the surface of the Sun on Dec. 15. It is not observable in the Northern Hemisphere. But in the Southeren Hemisphere, it is visible in the morning sky now. Now it is 11.6 mag and visible visually (Dec. 3, Terry Lovejoy). The ephemeris says it will be brighter than 0 mag at the perihelion passage in calculation. However, because it is a very tiny comet, it is highly likely to be disintegrated and disappear. It will be unobservable on the ground around the perihelion passage. But it will be visible in the SOHO images.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 14 36.36 -51 17.2 0.697 0.603 37 11.5 2:55 (320, 20)
Dec. 10 16 39.57 -40 28.8 0.759 0.358 18 9.8 2:53 (323, 0)
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Now it is 9.9 mag (Dec. 1, Jim Pryal). It will start fading after December. But it keeps observable in excellent condition for a while in the Northern Hemisphere. In the Southern Hemisphere, it keeps observable until 2012 spring when it fades down to 15-16 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 4 8.70 22 28.2 1.282 2.265 173 11.2 23:19 (180, 33)
Dec. 10 3 47.09 16 56.7 1.353 2.306 160 11.5 22:30 (180, 38)
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It is not observable at all due to the bad condition in this apparition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 15 48.61 -14 58.0 2.025 1.087 12 11.6 2:55 (302,-16)
Dec. 10 16 17.97 -16 18.6 2.053 1.115 12 12.0 2:53 (303,-15)
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Now it is very bright as 10.6 mag (Nov. 28, Marco Goiato). It will be observable in good condition at 11-12 mag in autumn and winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 23 55.84 0 13.7 1.492 2.037 108 11.9 20:44 (143, 48)
Dec. 10 0 3.73 0 36.5 1.555 2.028 103 11.9 20:51 (135, 44)
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First return of a new comet which brightened up to 9.5 mag in a major outburst in 2006. It will approach to the earth down to 0.2 A.U. in January, and will be observable in excellent condition. However, the brightness will be quite uncertain. The comet has not been recovered yet. It was fainter than 20 mag on Oct. 2 (Jean-Francois Soulier).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 22 37.35 34 19.9 0.416 1.151 102 13.2 20:44 (145, 10)
Dec. 10 22 50.30 32 1.2 0.380 1.109 98 12.1 20:51 (140, 9)
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It was observed as bright as 13.9 mag in 2011 autumn (Oct. 19, Hidetaka Sato). It is not observable now. In the Northern Hemisphere, it will be observable again in 2012 summer, when it will be fainter than 15 mag. In the Southern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 18 2.94 -25 9.7 2.405 1.521 20 12.4 20:44 ( 57, -2)
Dec. 10 18 24.75 -23 7.8 2.379 1.477 18 12.3 20:51 ( 57, -5)
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Now it is 12.2 mag and visible visually (Nov. 25, Seiichi Yoshida). It will reach up to 10 mag from January to March, but it will be too low to observe. It is already unobservable in the Southern Hemisphere. It is getting lower in the evening sky also in the Northern Hemisphere. It will be lower than 10 degree in early January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 18 30.96 -3 9.2 2.117 1.410 33 13.1 20:44 ( 79,-10)
Dec. 10 18 52.98 -3 41.1 2.076 1.351 32 12.7 20:51 ( 76,-12)
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It brightened up to 17.1 mag in late June (June 24, J. F. Hernandez). The condition of this apparition is bad, and it is not observable around the perihelion passage. It will appear in the morning sky at 14 mag in 2012 April in the Southern Hemisphere. It will not be observable until 2012 June in the Northern Hemisphere, when the comet will be 15.5 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 17 0.02 -24 48.7 2.548 1.572 6 13.4 20:44 ( 47,-12)
Dec. 10 17 23.41 -25 39.1 2.547 1.569 5 13.3 20:51 ( 45,-13)
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Now it is bright as 13.0 mag and visible visually (Nov. 25, Seiichi Yoshida). t keeps the current brightness until December. Then it starts fading, but it keeps observable in good condition until May when it becomes fainter than 18 mag. It locates somewhat low in the Southern Hemisphere. Juan Jose Gonzalez reported it so bright as 10.2 mag visually on Nov. 24.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 11 3.38 8 2.6 1.204 1.508 86 13.5 2:55 (238, 26)
Dec. 10 11 19.50 8 30.5 1.177 1.535 90 13.6 2:53 (236, 27)
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It brightened up to 12.3 mag around the perihelion passage, although it located very low (Oct. 19, Hidetaka Sato). Now it is 13.6 mag (Nov. 21, Katsumi Yoshimoto). The condition of this apparition is bad. In the Northern Hemisphere, it is only observable from December to February in the evening very low sky. In the Southern Hemisphere, it keeps observable for a long time, although it keeps locating extremely low. The component B was not detected, fainter than 20 mag, on May 14 (Hidetaka Sato).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 19 36.37 -29 11.7 1.699 1.159 41 13.5 20:44 ( 66, 18)
Dec. 10 20 10.73 -28 1.1 1.755 1.217 41 13.9 20:51 ( 67, 17)
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Now it is bright as 13.9 mag (Nov. 11, K. Hills). It keeps bright as 13-14 mag for a long time after this until 2013. It is not observable in the Northern Hemisphere, but it is observable in good condition in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 14 30.30 -86 47.4 5.797 5.459 65 13.5 2:55 (356, 34)
Dec. 10 16 3.75 -88 3.7 5.795 5.457 65 13.5 2:53 (358, 34)
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It brightened up to 14.1 mag in August and September (Aug. 11, Artyom Novichonok and Vladimir Gerke). Now it is not observable. It will appear in the morning sky at 14 mag at the end of February. Then it will be observable in good condition in the Southern Hemisphere while fading gradually. It will locate somewhat low in the Northern Hemisphere. In 2011, some visual observers reported it was very bright as 10-12 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 17 19.69 -10 28.9 3.283 2.349 15 13.6 20:44 ( 61,-19)
Dec. 10 17 35.53 -11 24.1 3.292 2.346 13 13.6 20:51 ( 57,-22)
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Appearing in the morning sky. Now it is bright as 14.1 mag but very diffuse (Nov. 26, Toshiyuki Takahashi). Juan Jose Gonzalez reported a very faint large coma, remnant of an old outburst, is visible with a total brightness of 10.0 mag on Nov. 24.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 12 27.90 -10 21.7 6.696 6.262 60 14.1 2:55 (268, 21)
Dec. 10 12 30.92 -10 50.5 6.594 6.262 66 14.1 2:53 (265, 26)
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Big asteroid discovered in 1906. It suddenly showed the cometary activity on Dec. 11, 2010, probably due to an impact of a small object. It was very bright as 11.5 mag visually (Dec. 17, 2010, Juan Jose Gonzalez). It had a dust coma still on Jan. 9, 2011 (Joseph Brimacombe). Then it turned to be stellar at 13.8 mag (Apr. 5, Juan Jose Gonzalez). Appearing in the morning sky in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 14 22.97 -5 6.0 3.282 2.552 36 14.3 2:55 (280, -6)
Dec. 10 14 34.54 -6 10.7 3.219 2.544 39 14.3 2:53 (279, -2)
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Now it is 14.3 mag and visible visually (Oct. 1, Jakub Cerny). It will be observable at 13-14 mag for a long time from 2011 to 2012. However, it will be unobservable temporarily from November to January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 17 59.16 -13 37.4 6.136 5.233 21 14.3 20:44 ( 65,-10)
Dec. 10 18 0.85 -13 46.9 6.163 5.223 15 14.3 20:51 ( 60,-16)
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It was expected to keep 14-15 mag for a long time from 2011 summer to 2012 summer. However, it is lost. It was observed only during two days in 2010 June. So the orbital elements are extremely uncertain. The condition is good in the Southern Hemisphere. But in the Northern Hemisphere, it is not observable until 2012 August.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 17 44.09 -66 13.1 3.004 2.420 45 14.7 20:44 ( 23, 22)
Dec. 10 18 10.97 -67 36.4 2.974 2.396 45 14.7 20:51 ( 21, 23)
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New comet discovered in the spacecraft images. It was observed so bright as 9.4 mag (Sept. 22, Chris Wyatt). Appearing in the morning sky in the Northern Hemisphere. It is still bright as 13.2 mag and visible visually (Nov. 24, Seiichi Yoshida). It will be observable while fading gradually after this. In the Southern Hemisphere, further observations are very hard.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 14 30.94 7 35.6 2.168 1.586 42 14.7 2:55 (271,-15)
Dec. 10 14 31.11 9 59.3 2.111 1.660 50 15.0 2:53 (266,-11)
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Now it is visible visually at 13.6 mag (Nov. 27, Jakub Cerny). It is expected to be 13 mag and will be observable in good condition in 2013. In the Northern Hemisphere, it keeps observable for a long time after this. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 23 3.13 57 49.5 6.546 6.979 112 14.7 20:44 (161, -8)
Dec. 10 22 59.60 56 37.3 6.584 6.954 108 14.7 20:51 (156,-10)
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It passed very near by the earth, within 0.1 A.U., and brightened up to 8.0 mag in the southern sky (Aug. 14, Willian Souza). After appearing in the morning sky in late September, it brightened up to 6.6 mag (Sept. 25, Juan Jose Gonzalez). Now it is fading, but still visible visually at 13.5 mag (Nov. 25, Seiichi Yoshida).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 13 16.84 -4 40.9 1.682 1.307 50 14.9 2:55 (271, 7)
Dec. 10 13 28.42 -5 35.9 1.712 1.402 54 15.4 2:53 (269, 11)
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It brightened up to 16.6 mag on Oct. 12 (Hidetaka Sato). But it is not observable now. It will keep unobservable until it becomes fainter than 18 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 17 53.22 -26 43.9 2.481 1.577 18 14.9 20:44 ( 55, -2)
Dec. 10 18 17.17 -26 18.4 2.493 1.575 16 14.9 20:51 ( 53, -4)
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It is expected to be bright as 9 mag from 2012 to 2013. Now it is 15.6 mag (Nov. 21, S. Shurpakov). It is already visible visually at 14.6 mag (Oct. 1, Jakub Cerny). In the Northern Hemisphere, it keeps observable in good condition for a long time until 2012 autumn when the comet brightens up to 10 mag. In the Southern Hemisphere, it is hardly observble before the perihelion passage. But it becomes observable in good condition since 2013 after the perihelion passage.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 14 22.11 43 36.9 5.032 4.825 72 15.3 2:55 (236,-30)
Dec. 10 14 30.63 43 36.5 4.917 4.764 75 15.2 2:53 (234,-27)
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Now it is 15.3 mag (Nov. 20, K. Hills). It is expected to be observable at 13 mag for a long time from 2012 summer to 2013 summer. It will be observable in excellent condition in the Southern Hemisphere. But it is not observable at brightest time in the Northern Hemisphere. It keeps observable for a while at 16 mag while brightening gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 1 32.98 -33 48.9 3.666 4.100 109 15.4 20:45 (180, 89)
Dec. 10 1 25.76 -34 10.7 3.708 4.041 102 15.4 20:51 ( 93, 81)
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First return of a new periodic comet which brightened up to 13 mag in a major outburst in 2005. In this apparition, it brightened up to 12 mag in 2011 summer and autumn. Now it is fading. It has already faded down to 15.0 mag (Nov. 27, Jakub Cerny). It keeps observable in good condition until February when it fades out down to 17-18 mag. The fragment B is also observed at 20 mag. Another fragments C and D are also observed at 21-22 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 23 4.88 5 30.6 2.077 2.435 99 15.7 20:44 (132, 37)
Dec. 10 23 12.44 6 3.5 2.184 2.458 94 15.9 20:51 (126, 32)
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It was revealed to be a comet when appearing in the morning sky in early August. It was visible as 13.8 mag and visible visually (Sept. 4, Sandor Szabo). Now it is fading. It has already faded down to 16.8 mag (Nov. 20, A. Diepvens). In the Northern Hemisphere, it keeps observable in excellent condition for a long time until 2012 summer. It is not observable at all in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 11 48.48 49 18.2 2.679 2.939 95 16.0 2:55 (216,-11)
Dec. 10 11 55.07 49 58.7 2.663 2.991 99 16.1 2:53 (213, -9)
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It has brightened faster than expected, and reached up to 8.1 mag in mid August (Aug. 19, Michael Mattiazzo). However, the nucleus has been disintegrated, and it faded out and got diffuse very rapidly. The necleus has been already fainter than 22.5 mag and unable to be detected (Oct. 23, Jakub Cerny). But the remnant of the comet, extremely large, diffuse and elongated, was detected by CCD images in late October. Juan Jose Gonzalez reported the remnant is still visible visually on Nov. 24, and the total magnitude is 9.5 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 3 25.83 22 56.8 0.773 1.742 164 16.0 22:37 (180, 32)
Dec. 10 3 17.89 22 1.5 0.910 1.851 155 16.7 22:02 (180, 33)
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It brightened rapidly, reached up to 14.2 mag in summer and became visible visually (Aug. 1, Juan Jose Gonzalez). Now it is fading slowly. But it is still bright as 15.8 mag (Oct. 31, Mitsunori Tsumura). It keeps observable until winter when it fades out down to 17-18 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 21 49.66 -23 32.2 2.460 2.343 71 16.4 20:44 ( 88, 41)
Dec. 10 22 1.76 -22 32.0 2.545 2.353 67 16.6 20:51 ( 86, 36)
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Now it is 16.2 mag (Nov. 15, Hidetaka Sato). It kept 16 mag from October to November, but it will be fainter than 18 mag in winter. In the Northern Hemisphere, it keeps locating the same altitude in the morning sky. In the Southern Hemisphere, it locates extremely low now, but it will be getting higher gradually. Juan Jose Gonzalez reported that it was visible as a 11.3-mag diffuse comet visually on Oct. 9.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 12 50.98 -17 22.5 1.585 1.259 52 16.5 2:55 (278, 20)
Dec. 10 13 10.13 -20 31.3 1.614 1.312 54 16.7 2:53 (280, 23)
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Now it is bright as 16.5 mag (Nov. 30, Hidetaka Sato). Although it was extremely faint as 20.5 mag at the recovery in 2010 autumn, it brightened rapidly. It will keep 15 mag and observable in good condition for a long time from 2012 to 2013. But it locates somewhat low in the Northern Hemisphere in 2013.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 12 50.02 10 30.3 3.892 3.571 63 16.6 2:55 (254, 4)
Dec. 10 12 57.04 10 6.8 3.784 3.553 69 16.5 2:53 (252, 8)
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It became bright as 12 mag in 2010. Now it is fading. It has already faded down to 16.2 mag (Nov. 14, V. Gerke, A. Novichonok, S. Plaksa).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 1 30.42 1 23.0 3.270 3.984 130 16.6 20:44 (180, 54)
Dec. 10 1 28.81 1 35.0 3.373 4.001 123 16.7 20:51 (164, 52)
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It has returned after 27-year blank since 1984. It brightened very rapidly, and became very bright as 9.1 mag (July 10, Tsutomu Seki). It may keep bright after the perihelion passage. It was visible in SWAN images still on Sept. 17 (Hirohisa Sato). Tsutomu Seki reported the comet is about 15 mag in early November, although he commented that confirmation is required.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 13 52.36 -30 24.4 2.793 2.094 37 16.6 2:55 (297, 15)
Dec. 10 14 4.13 -31 28.7 2.827 2.180 40 17.0 2:53 (296, 18)
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Now it is 16.9 mag (Nov. 14, A. Tudorica, T. Badescu). It will be fading very slowly after this. In the Northern Hemisphere, it keeps observable for a long time until 2012 spring when it fades down to 17-18 mag. It will not be observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 22 38.95 37 40.1 5.334 5.655 104 16.7 20:44 (147, 7)
Dec. 10 22 43.09 36 38.2 5.445 5.687 99 16.7 20:51 (141, 4)
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Extremely diffuse and hardly detected by CCD images. The nucleus is already fainter than 18 mag (Oct. 15, Jean-Francois Soulier). The comet can be already disintegrated. However, Juan Jose Gonzalez reported it so bright as 9.5 mag visually on Sept. 25. In the Northern Hemisphere, it keeps locating higher than 20 degree from November to December. In the Southern Hemisphere, it will be observable in early November, then it will be getting higher rapidly.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 11 53.62 -23 56.7 1.893 1.709 64 16.7 2:55 (277, 34)
Dec. 10 11 52.90 -28 12.3 1.891 1.799 69 16.9 2:53 (278, 42)
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It keeps 17 mag for a long time from 2011 summer to 2012 spring. It keeps observable all thgough the period in good condition in the Southern Hemisphere. In the Northern Hemisphere, it is not observable until 2012 spring when it becomes fainter than 18 mag. No observations have been reported since August.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 13 27.52 -69 32.9 2.375 1.982 55 16.8 2:55 (335, 33)
Dec. 10 13 16.54 -70 38.6 2.343 2.001 57 16.9 2:53 (336, 37)
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Now it is bright as 16.8 mag (Nov. 23, Catalina Sky Survey). Although it was extremely faint as 21 mag at the discovery in late October, it brightened rapidly. It will keep 17 mag until the end of January. It may fade out rapidly after that. It locates somewhat low in the Southern Hemisphere, but it is observable in good condition in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 4 31.67 32 13.6 1.074 2.052 169 17.0 23:43 (180, 23)
Dec. 10 4 27.10 32 55.5 1.080 2.052 166 16.9 23:11 (180, 22)
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Now it is 16.8 mag (Nov. 15, V. Gerke. A. Novichonok, S. Plaksa, D. Chestnov). It tends to be brightest after the perihelion passage. In the Northern Hemisphere, it keeps observable at 17 mag in good condition from autumn to winter. In the Southern Hemisphere, it locates low and will be hard to observe.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 11 1.45 20 23.9 2.125 2.369 91 17.0 2:55 (229, 17)
Dec. 10 11 8.05 20 47.9 2.077 2.409 97 16.9 2:53 (225, 19)
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It reached up to 14 mag in 2010 autumn and winter. Now it is fading. It has already faded down to 16.6 mag (Sept. 14, Hidetaka Sato). In the Southern Hemisphere, it keeps observable in good condition while fading gradually. In the Northern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 2 27.12 -80 21.9 4.249 4.127 76 17.0 21:35 ( 0, 45)
Dec. 10 1 43.64 -79 35.9 4.335 4.173 73 17.0 20:51 ( 2, 45)
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Although it has passed the perihelion in last November, it is uxexpectedly bright as 16.4 mag still now (Nov. 6, A. Tudorica, T. Badescu). It keeps observable in excellent condition until winter. It will keep 16-17 mag for a while after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 6 43.88 3 28.1 3.875 4.705 143 17.0 2:00 (180, 52)
Dec. 10 6 36.10 4 14.0 3.867 4.754 151 17.0 1:24 (180, 51)
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Now it is 17.5 mag (Nov. 5, LINEAR). It keeps observable in good condition at 17-18 mag until March. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 2 48.97 35 10.3 1.185 2.114 153 17.0 22:00 (180, 20)
Dec. 10 2 30.53 32 53.5 1.191 2.074 144 17.1 21:14 (180, 22)
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Now it is 17.5 mag (Nov. 15, A. Diepvens). It keeps observable at 17 mag for a long time from 2011 to 2012.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 23 32.16 12 12.7 7.736 8.091 107 17.0 20:44 (144, 35)
Dec. 10 23 30.00 11 49.5 7.864 8.097 100 17.1 20:51 (134, 30)
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It brightened up to 13-14 mag and became visible visually from 2007 to 2009. Now it is fading. But it is still bright as 17.5 mag (Oct. 28, Ken-ichi Kadota). In the Northern Hemisphere, it keeps observable in excellent condition until early summer in 2012. In the Southern Hemisphere, it locates extremely low only.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 10 56.36 36 27.0 10.824 11.017 98 17.1 2:55 (218, 5)
Dec. 10 10 55.23 36 46.2 10.752 11.053 105 17.1 2:53 (213, 8)
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Now it is 16.4 mag (Nov. 23, Catalina Sky Survey). It was observed at 17.5 mag in 2011 spring, when the condition was good in the Southern Hemisphere. It will be observable at 17 mag in this winter, when the condition is good in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 10 29.01 19 37.0 1.978 2.337 98 17.2 2:55 (223, 22)
Dec. 10 10 15.50 22 41.2 1.851 2.369 109 17.1 2:53 (213, 25)
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Now it is 17.3 mag (Nov. 21, J. F. Soulier). It keeps observable at 18 mag for a long time until 2013.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 5 29.96 26 15.3 2.957 3.923 166 17.3 0:46 (180, 29)
Dec. 10 5 25.27 26 12.9 2.940 3.922 174 17.3 0:14 (180, 29)
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Now it is 17.5 mag (Nov. 14, K. Hills). It keeps 17-18 mag until early 2013. It keeps observable in good condition until early 2012 in the Southern Hemisphere, although it locates low in the Northern Hemisphere. In the Northern Hemisphere, it will be observable in good condition from 2012 autumn to early 2013.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 0 25.76 -38 18.6 2.892 3.154 96 17.3 20:44 ( 72, 76)
Dec. 10 0 27.46 -36 29.2 2.945 3.133 91 17.3 20:51 ( 79, 70)
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It had been fading after the perihelion passage in 2010 October, but it brightened again in outburst on Apr. 5, 2011. It reached up to 14.7 mag in May (May 28, Hidetaka Sato). It has been unobservable since July. But it is appearing in the morning sky now. Now it is 17.3 mag, much brighter than expected (Nov. 26, Hidetaka Sato). It locates low in the Southern Hemisphere. But in the Northern Hemisphere, it keeps observable in good condition after this. It will keep 17 mag for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 13 12.96 14 57.6 3.938 3.578 61 17.3 2:55 (254, -3)
Dec. 10 13 19.53 14 44.7 3.880 3.607 66 17.4 2:53 (251, 1)
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Peculiar asteroid moving along a cometary orbit. Now it is 18.4 mag (Oct. 26, Hidetaka Sato). It keeps observable at 18 mag for a long time from 2008 to 2014.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 8 7.04 9 23.3 5.956 6.604 127 17.5 2:55 (190, 45)
Dec. 10 8 3.53 9 56.7 5.871 6.610 135 17.4 2:51 (180, 45)
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Now it is 17.4 mag (Nov. 24, V. Gerke. A. Novichonok, S. Plaksa, D. Chestnov). It will be observable in good condition at 18 mag from autumn to winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 3 3.22 -15 4.3 3.244 4.019 136 17.6 22:15 (180, 70)
Dec. 10 3 0.42 -15 10.9 3.296 4.014 131 17.7 21:45 (180, 70)
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Now it is 17.2 mag (Nov. 14, V. Gerke, A. Novichonok, S. Plaksa). It will be observable in good condition for a while. But it will be fainter than 18 mag in December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 23 43.45 -7 27.2 1.580 2.041 102 17.6 20:44 (132, 53)
Dec. 10 23 52.19 -6 26.6 1.655 2.043 98 17.7 20:51 (125, 48)
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Now it is 17.4 mag (Nov. 29, F. Losse). It keeps observable in good condition for a while after this. But it is brightest now, and will be fainter than 18 mag in February.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 7 58.22 4 47.5 1.617 2.355 127 17.8 2:55 (187, 50)
Dec. 10 7 57.74 3 41.0 1.572 2.366 134 17.7 2:45 (180, 51)
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The currently reported brightness shows large variation, 16.9 mag on Oct. 22 (Artyom Novichonok), 20.7 mag on Oct. 30 (Hidetaka Sato), 18.2 mag on Nov. 4 (Artyom Novichonok). It may be variable in a short time. This comet was re-discovered in major outburst in 1991.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 5 54.43 -3 3.2 1.813 2.702 148 17.7 1:10 (180, 58)
Dec. 10 5 50.17 -3 28.4 1.810 2.716 151 17.8 0:38 (180, 58)
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It brightened up to 14.0 mag and became visible visually in August (Aug. 1, Juan Jose Gonzalez). Now it is fading. It is still bright as 16.1 mag (Nov. 17, V. Gerke, A. Novichonok, S. Plaksa, D. Chestnov). But it will be fainter than 18 mag soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 23 23.00 -12 58.0 2.096 2.408 96 17.8 20:44 (120, 54)
Dec. 10 23 30.49 -11 45.2 2.204 2.432 91 18.0 20:51 (114, 48)
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It is expected to keep 13 mag and observable in good condition in the Northern Hemisphere for a long time from 2013 to 2014. Now it is 18.3 mag (Nov. 7, Hidetaka Sato). It keeps observable at 17-18 mag in good condition until 2012 June.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 3 11 34.17 -3 51.4 7.430 7.234 74 17.9 2:55 (254, 28)
Dec. 10 11 34.64 -3 42.2 7.262 7.188 81 17.9 2:53 (249, 32)
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