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It was faint as 16.4 mag at the discovery in March (Mar. 12, R. H. McNaught). Then it brightened well as expected, and became visible visually as 12.2 mag in August (Aug. 3, Juan Jose Gonzalez). Now it is 11.2 mag (Nov. 22, Juan Jose Gonzalez). Strongly condensed and easy to see. It was very small and sharp before, however, the coma is getting larger and it looks like an ordinary comet now. It will reach to 10 mag from January to March. In the Southern Hemisphere, it is observable only until December. In the Northern Hemisphere, the altitude will be getting lower slowly after January, and it will be too low to observe in April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 20 37.21 -22 45.8 2.203 1.948 62 11.0 20:36 ( 84, 33)
Dec. 3 20 50.36 -20 58.8 2.211 1.892 58 10.9 20:44 ( 83, 27)
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It was expected to reach to 9 mag in 2006 spring. But actually, it is much fainer than expected, 13.9 mag on Aug. 1 and 11.7 mag still on Oct. 27 (Michael Mattiazzo). It seems to be a comet with very slow brightness evolution, similar to C/2003 T4. It will be 11 mag at best. It is not observable until late March in the Northern Hemisphere, but will be observable for a long time while it is getting fainter after that. It will be too low even in the Southern Hemisphere from January to February.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 20 19.46 -74 1.1 2.122 1.885 62 11.6 20:36 ( 20, 39)
Dec. 3 20 13.24 -69 20.2 2.177 1.838 57 11.5 20:44 ( 26, 36)
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It had been so faint as around 15 mag for a long time since May. It had been too faint to see visually. However, after an outburst occured on Sept. 9 when it brightened to 13 mag (Stephane Garro), it keeps bright enough to be visible visually around 13 mag. Very diffuse if not in outburst, but visible visually as 12.8 mag (Oct. 24, Seiichi Yoshida). Another outburst occured on Nov. 2, and it was condensed and bright bright as 12.5 mag (Piotr Guzik).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 1 48.41 22 58.3 4.912 5.772 147 13.2 21:26 (180, 32)
Dec. 3 1 46.31 22 38.3 4.977 5.774 140 13.2 20:56 (180, 32)
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It brightened faster than a typical comet, and it is already visible visually as 13.5 mag (Oct. 24, Seiichi Yoshida). Small and strongly condensed. Because it is distant from the sun, it keeps observable at 13.5 mag in good condition for a long time until 2006 June.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 10 2.98 47 23.5 4.936 5.291 105 13.8 2:58 (207, 0)
Dec. 3 10 6.51 47 56.6 4.845 5.281 111 13.8 2:54 (203, 1)
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Although it was reported so faint as 16-20 mag at the discovery in September, it is actually much brighter, around 14 mag. It was also visible visually as 13.6 mag (Sept. 25, Werner Hasubick). Then it brightened furthermore, 12.6 mag on Nov. 4 (Juan Jose Gonzalez). It keeps observable in good condition until winter. It must have been observable as 14-15 mag in 2004 spring and summer, but it was not discovered at that time. Therefore, now it may be in an unusual temporary outburst. But actually, it keeps bright still in late November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 1 34.90 25 44.8 2.003 2.867 144 13.9 21:12 (180, 29)
Dec. 3 1 33.09 25 4.9 2.085 2.893 137 14.0 20:44 (180, 30)
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Although it has already passed the perihelion in 2004 October, the fading after the perihelion passage is slow. It is visible visually still now, bright as 13.1 mag (Oct. 24, Seiichi Yoshida). Moderately condensed and easy to see. Because it is distant from the sun, it can be visible visually as 13 mag for a while after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 3 2.48 -12 33.0 4.402 5.224 142 14.0 22:39 (180, 68)
Dec. 3 2 55.36 -12 22.8 4.522 5.291 137 14.1 22:05 (180, 67)
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It reached to 11.4 mag in August (Aug. 12, Juan Jose Gonzalez). It was expected to start fading since early September. But actually, it keeps bright as 11.8 mag still on Oct. 7 (Juan Jose Gonzalez). Because it had been very low in the morning for a while, it was not observed visually these days. But actually, it was bright as 13.8 mag still on Oct. 31 (Ken-ichi Kadota). It is getting higher gradually now. It will be visible visually around 13.5 mag still now. In the Southern Hemisphere, it is unobservable until December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 13 12.87 7 11.0 2.305 1.852 51 14.5 2:58 (263, -3)
Dec. 3 13 19.17 5 10.8 2.309 1.931 55 14.7 2:54 (263, 2)
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It was fantastic, so bright as 3.5 mag, so large as 30 arcmin, locating high overhead at its best time in early January. Then it has been getting fainter and smaller gradually, 12.5 mag on Sept. 3 (Edwin van Dijk) and 13.8 mag on Oct. 19 (Mitsunori Tsumura). Not observable already. It will appear again in the morning sky at 15 mag in December, then it keeps observable using CCD cameras until next summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 15 56.68 1 42.3 5.006 4.114 22 14.6 2:58 (294,-33)
Dec. 3 16 3.55 1 13.9 5.060 4.184 24 14.7 2:54 (291,-29)
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Recovery of a peculiar asteroid 2004 FS101 discovered in 2004 spring. Although it was 18 mag in mid January, it has been brightening rather faster than a typical comet, and it reached to 16 mag in early September. It will be 14.5 mag around 2006 January. It keeps observable at 15-16 mag for a long time from 2005 spring to the end of 2006. Because it moves in the northern sky, it keeps observable for a long time in the Northern Hemisphere. However, it will be rather low when the comet becomes brightest. It was not visible visually, fainter than 14.0 mag on Aug. 5 (Seiichi Yoshida), when the altitude was high.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 16 25.01 49 14.1 3.519 3.318 70 14.8 20:36 (127,-50)
Dec. 3 16 44.78 49 48.9 3.472 3.301 71 14.8 20:44 (128,-52)
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New comet discovered in the SWAN images. Revealed as a periodic comet with a period of 27 years. It has already passed the perihelion on Oct. 10. It has been fading as 9 mag on Oct. 9 and 10 mag on Oct. 13 in the SWAN images. It faded down to 12.6 mag on Oct. 24 (Seiichi Yoshida). Not observable already. It will appear again at dawn in January, but it will be fainter than 18 mag. Because fading rapidly, it can be too faint to observe in January. It must have been brightening in the morning sky from August to September, but it was missed.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 16 48.61 -13 29.4 2.050 1.107 12 15.0 20:36 ( 59,-17)
Dec. 3 16 50.26 -13 56.2 2.171 1.206 8 15.5 20:44 ( 53,-22)
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Although it was faint as 18 mag at the discovery in 2004 November, then it brightened very rapidly until early 2005, and reached to 16.0 mag on May 7 (Ken-ichi Kadota). After it appeared in the morning sky again, it continued brightening furthermore, and reached to 14.7 mag on Nov. 22 (Ken-ichi Kadota). It will be visible visually around 13.5 mag. After this, it keeps bright as 15 mag for a long time until 2006 spring. In the Northern Hemisphere, it keeps observable in good condition until 2006 summer when it becomes too faint.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 12 41.07 15 0.8 2.773 2.468 61 15.2 2:58 (252, -1)
Dec. 3 12 52.53 14 17.7 2.717 2.483 65 15.2 2:54 (251, 2)
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It was observed as 17.0 mag on July 10. Then it brightened as expected and reached to 15.0 mag on Oct. 1 (Mitsunori Tsumura). It has shown unstable change of brightness in its past appearance, however, it seems stable in this return. It keeps 15 mag until December. It is also visible visually as 13.5 mag (Oct. 24, Seiichi Yoshida).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 0 16.15 -5 27.3 1.739 2.364 117 15.7 20:36 (160, 59)
Dec. 3 0 20.46 -4 46.9 1.807 2.358 111 15.8 20:44 (147, 55)
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Although it became brightest about 2 weeks before the perihelion passage in its last appearance in 1998, it kept brightening until the perihelion passage in this return, and reached to 9.2 mag on July 2 (Carlos Labordena). It is fading rapidly after that, and reached down to 13.2 mag on Oct. 11 (Michael Mattiazzo). It will be fading while locating around 30 degree high after this in the Northern Hesmisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 8 54.13 -23 55.2 1.728 2.092 97 15.8 2:58 (249, 66)
Dec. 3 8 52.85 -25 18.4 1.722 2.154 101 16.0 2:54 (243, 72)
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It brightened faster than a typical comet, and it reached to 16.5 mag on Oct. 23 (Ken-ichi Kadota). It will be observable in good condition as 16 mag for a long time until next spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 10 33.78 57 45.5 4.677 5.010 104 16.1 2:58 (204,-11)
Dec. 3 10 40.44 58 36.1 4.606 5.004 108 16.1 2:54 (202,-11)
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It passed the perihelion on Apr. 10 and reached to 8 mag in the southern sky. The nucleus was split into two components and it had a broad long dust tail. Then it had been fading slowly, and it was visible visually still on Oct. 25 as 13.5 mag (Seiichi Yoshida). However, it is fading rapidly now. The component B has already disappeared. The component A is already faint as 16 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 22 15.43 24 0.0 3.134 3.448 100 16.2 20:36 (141, 20)
Dec. 3 22 16.86 23 45.8 3.311 3.526 94 16.5 20:44 (134, 15)
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It kept bright as 12 mag from June to August, however, it faded down to 13.0 mag on Sept. 8 (Seiichi Yoshida). It faded down to 15.7 mag on Oct. 19 by CCD observations (Mitsunori Tsumura). It keeps locating around the same altitude after this until January when it will be fainter than 18 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 21 12.24 -11 21.4 1.973 1.936 73 16.2 20:36 (101, 34)
Dec. 3 21 27.36 -9 56.8 2.076 1.974 70 16.5 20:44 ( 99, 29)
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The component C was recovered on Oct. 22 as 19.3 mag (C. W. Hergenrother). Then it brightened to 17.8 mag on Nov. 28 ((Ernesto Guido, Giovanni Sostero)). It will pass only 0.08 AU from the earth on May 12, and is expected be so bright as 2 mag. Expected to be visible with naked eyes. It keeps observable in good condition all through the encounter in May. Brightening rapidly, and will be visible visually as 14 mag in late January. But it has been actually fainter than this ephemeris by 1.5 mag, although it has been brightening rapidly as expected. The components B and E have not been recovered yet. The component B will reach to 7 mag in May. The component E may have already disappeared because it faded before the perihelion passage in its last appearance in 2001.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 11 43.21 13 31.2 2.557 2.463 73 16.6 2:58 (245, 11)
Dec. 3 11 53.45 12 53.9 2.413 2.405 77 16.3 2:54 (243, 14)
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It was visible visually as 14.3 mag in 2005 spring (July 10, Edwin van Dijk). Although it has been not observable for a while, now it is appearing in the morning sky again. It will be observable in good condition again in 2006 spring, but only 16 mag at best. Then it will fade out rapidly, and become fainter than 18 mag in July.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 14 0.35 5 53.2 4.338 3.651 41 16.3 2:58 (271,-12)
Dec. 3 14 0.66 5 55.4 4.270 3.675 47 16.3 2:54 (268, -7)
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It was 16.8 mag at the discovery in May (May 20, R. H. McNaught). Then it brightened rapidly, and became visible visually as 13.7 mag (Sept. 3, Edwin van Dijk). Because it moves in the northern sky, it keeps locating high for a long time in the Northern Hemisphere. However, it will fade out rapidly after this, and will be fainter than 18 mag in early January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 4 28.71 53 4.1 0.963 1.872 147 16.4 0:11 (180, 2)
Dec. 3 4 19.24 52 39.1 0.999 1.913 149 16.6 23:28 (180, 2)
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It passes the perihelion in 2006 February. But it is outside of Jupiter's orbit. So it keeps 17 mag for a long time. Because it moves in the northern sky, it keeps locating high and observable in good condition until 2006 summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 14 47.03 64 44.3 6.793 6.813 87 16.8 2:58 (211,-41)
Dec. 3 14 54.71 64 33.0 6.758 6.810 88 16.7 2:54 (212,-39)
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It was 13.6 mag on May 12, as bright as expected (Michael Mattiazzo). After that, no successful observations were reported for a while even when the comet became locating high also in the Northern Hemisphere. Actually, it was 17.1 mag on Sept. 3 (Ken-ichi Kadota). It seems the comet faded faster than expected. But it will keep 17 mag for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 4 53.07 8 48.9 1.893 2.854 163 16.8 0:35 (180, 46)
Dec. 3 4 45.50 8 53.3 1.925 2.893 166 16.9 23:55 (180, 46)
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It was 11.3 mag around the perihelion passage (June 16, Juan Jose Gonzalez), but it continued brightening even after that, and reached to 10.2 mag on July 2 (Juan Jose Gonzalez). However, it faded out rapidly after that. It faded down to 12.6 mag on Sept. 3 visually (Reinder J. Bouma). At the same time, it was reported so faint around 16-17 mag by CCD observations. Now getting higher again in the morning sky. But it will be fainter than 18 mag in late December. It can be already fainter than this ephemeris.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 14 25.36 20 20.1 2.922 2.380 48 16.9 2:58 (262,-25)
Dec. 3 14 28.52 19 39.8 2.922 2.446 52 17.1 2:54 (260,-20)
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First return of a new periodic comet discovered in 1998. The condition is very good and it became brighter in this appearance than at the discovery. It was recovered in July at 19.5 mag, then it brightened as expected, and reached to 16 mag in September. Now it is fading rapidly, and it will be fainter than 18 mag at the end of 2005.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 22 28.16 9 6.6 0.931 1.450 98 17.0 20:36 (134, 33)
Dec. 3 22 42.93 12 20.0 0.988 1.466 95 17.1 20:44 (132, 28)
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It reached to 17 mag in 2004 autumn. It will be observable as 17 mag in good condition in this winter again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 7 55.86 16 31.4 2.516 3.196 125 17.1 2:58 (192, 38)
Dec. 3 7 54.81 16 19.3 2.451 3.207 133 17.0 2:54 (184, 39)
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It was 17.3 mag on Nov. 1 (Ken-ichi Kadota), fading slowly as expected. It will be fainter than 18 mag in December. It keeps locating high.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 13 14.63 34 50.0 4.608 4.355 69 17.1 2:58 (240,-19)
Dec. 3 13 19.24 34 44.5 4.588 4.414 73 17.1 2:54 (238,-15)
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It reached to 13 mag and was observed visually in good condition in 2004 autumn. It has been not observable since August, but it is appearing at dawn again. It keeps 17 mag until late April. But it will go away soon after that. Next return is in 2018, when it will be 14.3 mag at best.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 13 13.61 10 22.0 3.903 3.399 52 17.2 2:58 (261, -5)
Dec. 3 13 19.16 9 35.1 3.864 3.443 57 17.2 2:54 (259, -1)
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It was 16.8 mag on Sept. 9 (Yuji Ohshima). It keeps good condition for a long time. But it will fade out after this, and will be fainter than 18 mag in early January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 0 42.78 22 35.7 1.299 2.098 132 17.3 20:36 (176, 32)
Dec. 3 0 49.23 21 29.2 1.364 2.114 127 17.4 20:44 (168, 33)
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It was recovered at 17.3 mag on Sept. 7 (Filip Fratev), as bright as exepcted. It keeps 17.5 mag until December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 11 6.48 18 0.9 1.736 1.893 83 17.4 2:58 (236, 14)
Dec. 3 11 19.65 18 25.6 1.691 1.919 87 17.4 2:54 (233, 16)
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It will be at opposition again between autumn and winter, and observable at 17.5 mag locating high.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 3 46.02 17 44.3 3.545 4.528 174 17.4 23:23 (180, 37)
Dec. 3 3 41.08 17 37.3 3.574 4.537 166 17.4 22:51 (180, 37)
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It was observed around 20 mag in early October, as bright as expected. It will be observable in good condition at around 17 mag from December to March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 10 8.63 10 3.3 1.434 1.785 93 17.6 2:58 (230, 30)
Dec. 3 10 20.84 8 16.4 1.366 1.777 96 17.4 2:54 (229, 33)
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New faint comet. It will be only 18 mag at best in November and December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 4 33.51 20 13.4 4.263 5.245 173 17.5 0:15 (180, 35)
Dec. 3 4 22.39 20 5.2 4.253 5.237 176 17.5 23:31 (180, 35)
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It was expected to reach to 13 mag in 2005 spring at the perihelion passage. However, the brightness evolution was very slow actually and it was only 14.5 mag at best. Now it is getting higher again in the morning. The fading is very slow, too. The current distance is almost same as that at the discovery, and the brightness faded to 17.9 mag, as bright as at the discovery (Nov. 3, Ken-ichi Kadota).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 7 39.24 5 35.0 2.735 3.414 126 17.6 2:58 (188, 49)
Dec. 3 7 25.45 6 3.1 2.692 3.473 136 17.6 2:39 (180, 49)
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It reaches only to 17.5 mag at best in January and February. It will be getting lower in the evening sky.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 22 29.84 -10 9.0 1.775 2.056 91 17.9 20:36 (118, 48)
Dec. 3 22 39.92 -9 28.1 1.830 2.035 87 17.8 20:44 (112, 43)
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Now it is around the aphelion. However, it will be at opposition in early November and reach to 17.6 mag. It becomes brighter than 18 mag only in November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 2 0.01 35 13.0 1.503 2.402 148 17.8 21:37 (180, 20)
Dec. 3 1 47.87 33 6.8 1.549 2.399 141 18.0 20:57 (180, 22)
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New faint comet. It will be only 18 mag at best in October and November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 1 58.41 16 13.9 1.964 2.857 149 17.8 21:36 (180, 39)
Dec. 3 1 56.68 15 52.2 2.013 2.853 141 17.9 21:07 (180, 39)
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New comet discovered by many people in the SWAN images released in late August. It was bright as 9.5 mag visually (Aug. 25, Alan Hale). Visually, it faded as 12.2 mag on Sept. 21 (Juan Jose Gonzalez), 12.7 mag on Oct. 11 (Reinder J. Bouma), 13.2 mag on Oct. 24 (Seiichi Yoshida). Then it faded rapidly and got diffused extremely. It was hardly detected as about 15.5 mag on Oct. 31, but extremely diffused (Ken-ichi Kadota). But finally, it was not detected, fainter than 20 mag on Nov. 16 (Peter Birtwhistle and Richard Miles). It keeps observable in good condition for a while after this, however, only observable with very large telescopes.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 26 2 27.11 66 30.3 1.290 2.082 131 21.8 22:03 (180,-11)
Dec. 3 2 8.36 60 23.3 1.380 2.181 133 22.9 21:18 (180, -5)
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