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Now it is very bright as 8.5 mag (Feb. 3, Juan Jose Gonzalez). It brightened temporarily in outburst in early January, but it returned to the original brightness. It will pass close to the earth from spring to summer, and it is expected to brighten up to 5-6 mag. In the Northern Hemisphere, it will be unobservable in late February. It will appear in the morning sky again in late April, but it locates low in the south around the high light. In the Southern Hemisphere, it is not observable now. But after appearing in the morning sky again in mid April, it will be observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 23 36.36 9 23.5 2.337 1.649 36 8.6 19:04 ( 89, 18)
Feb. 20 23 35.48 8 16.8 2.384 1.591 28 8.4 19:10 ( 93, 10)
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Now it is 7.8 mag (Feb. 12, Maik Meyer). It was expected to brighten up to 4-5 mag from autumn to winter. But actually, it was 6 mag at best. It will be fading rapidly after this. It is observable in excellent condition in the Northern Hemisphere. It is not observable after this in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 4 32.73 69 52.9 1.179 1.746 107 8.5 19:04 (179, 55)
Feb. 20 4 14.93 64 7.0 1.380 1.839 100 9.0 19:10 (168, 60)
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Now it is so bright as 9.2 mag (Feb. 12, Maik Meyer). It is observable at 9-10 mag until spring in excellent condition in the Northern Hemisphere. It keeps unobservable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 16 12.29 68 12.6 1.841 2.235 100 9.4 5:23 (193, 55)
Feb. 20 15 46.58 69 41.4 1.832 2.265 102 9.5 5:17 (185, 55)
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Now it is bright as 12.4 mag (Jan. 9, Seiichi Yoshida). It keeps 12 mag for a long time from 2015 autumn to 2016 summer. In the Northern Hemispehre, it keeps observable in good condition for a long time. It keeps unobservable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 20 23.96 64 56.2 2.673 2.685 80 12.1 5:23 (211, 34)
Feb. 20 20 28.71 64 43.4 2.696 2.678 78 12.1 5:17 (211, 36)
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Now it is 13.6 mag (Jan. 29, Sandor Szabo). It will brighten up to 11 mag from spring to summer. In the Northern Hemisphere, it keeps observable in good condition while the comet will be brightening. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 5 2.49 20 13.9 1.597 2.181 113 13.0 19:31 ( 0, 75)
Feb. 20 5 5.24 20 32.7 1.637 2.141 106 12.9 19:10 ( 3, 76)
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Now it is 11.8 mag (Jan. 8, Giuseppe Pappa). It keeps 11-13 mag until February. But it keeps very low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 23 49.20 -9 47.5 2.463 1.696 31 13.3 19:04 ( 71, 9)
Feb. 20 0 7.67 -7 53.5 2.530 1.734 29 13.5 19:10 ( 75, 8)
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It is not observable now. It will appear in the morning sky in June. But the comet will be faint as 16-17 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 22 39.31 -10 51.4 2.846 1.903 13 13.4 19:04 ( 81, -5)
Feb. 20 22 55.95 -9 18.5 2.900 1.940 11 13.7 19:10 ( 84, -8)
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Now it is 13.3 mag (Jan. 9, Seiichi Yoshida). It will brighten up to 13 mag from winter to spring. It will be observable in excellent condition in the Southern Hemisphere. But it locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 15 20.05 -18 43.9 1.948 2.199 90 13.5 5:23 (352, 36)
Feb. 20 15 29.21 -19 29.5 1.874 2.205 95 13.4 5:17 (355, 35)
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It brightened up to 3.7 mag and became a naked eye comet in mid January in 2015 (Jan. 13, Marek Biely). Now it is fading. It has already faded down to 14.6 mag (Jan. 26, Ken-ichi Kadota). In the Northern Hemisphere, it keeps observable for a long time until the comet fades out. It is not observable until March in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 18 20.96 20 46.6 5.202 4.793 60 13.8 5:23 (273, 42)
Feb. 20 18 24.31 21 9.4 5.206 4.860 64 13.8 5:17 (275, 46)
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Appearing in the morning sky in the Southern Hemisphere. It will be observable soon also in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 19 15.52 -26 40.9 6.724 5.964 36 14.0 5:23 (305, 2)
Feb. 20 19 20.97 -26 30.3 6.651 5.962 42 13.9 5:17 (308, 5)
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Now it is 14.0 mag (Feb. 11, Michael Jager). It is expected to brighten very rapidly and reach up to 11 mag in March. In this apparition, it keeps observable in excellent condition both brightening and fading period. In the Northern Hemisphere, it will be unobservable temporarily in mid March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 5 51.67 -23 57.6 0.218 1.088 112 15.1 20:20 ( 0, 31)
Feb. 20 5 47.92 -26 31.0 0.181 1.053 105 14.5 19:49 ( 0, 28)
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It brightened up to 11.1 mag in 2015 autumn (Sept. 21, Seiichi Yoshida). Now it is 14.0 mag (Jan. 24, Ken-ichi Kadota). It keeps observable in good condition after this, while the comet will be fading gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 12 13.66 9 35.6 1.485 2.350 142 14.7 2:45 ( 0, 64)
Feb. 20 12 7.42 10 20.0 1.488 2.402 151 14.9 2:12 ( 0, 65)
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Now it is 14.8 mag (Nov. 22, Catalina Sky Survey). Distant object, but it keeps observable at 14-15 mag for a long time from 2015 to 2016. It becomes unobservable temporarily from January to March in the Southern Hemisphere, or from February to April in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 22 36.40 -5 12.0 5.885 4.941 15 14.8 19:04 ( 86, -3)
Feb. 20 22 43.58 -4 44.5 5.903 4.934 10 14.8 19:10 ( 90, -8)
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Now it is 17.9 mag (Jan. 19, Ken-ichi Kadota). It will be observable at 11 mag in good condition from spring to summer. It is much fainter than this ephemeris recently. But it will start brightening rapidly soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 12 29.76 15 31.0 1.350 2.198 139 15.2 3:01 ( 0, 70)
Feb. 20 12 29.40 16 21.9 1.267 2.158 145 14.9 2:33 ( 0, 71)
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Now it is 16.7 mag (Dec. 11, D. Buczynski). It is observable at 14-15 mag in good condition from winter to summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 13 43.39 -3 41.9 1.786 2.412 117 15.4 4:15 ( 0, 51)
Feb. 20 13 44.13 -4 44.9 1.698 2.401 124 15.3 3:48 ( 0, 50)
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Appearing in the morning sky. It will be observable at 14 mag in good condition from spring to summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 18 24.24 -18 13.5 3.062 2.509 47 15.4 5:23 (308, 17)
Feb. 20 18 38.01 -18 1.1 2.985 2.496 51 15.3 5:17 (309, 18)
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It kept brightening even after the perihelion passage, and brightened up to 13.0 mag (Dec. 21, Juan Jose Gonzalez). It keeps observable in excellent condition for a while. But it will be fading after this. It has already faded down to 15.4 mag (Jan. 29, Sandor Szabo).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 5 40.41 24 15.7 0.996 1.735 122 15.4 20:10 ( 0, 79)
Feb. 20 5 51.03 25 40.6 1.084 1.772 117 15.7 19:53 ( 0, 81)
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It passed near by the earth and brightened up to 12.1 mag from mid December to early January (Dec. 20, Thomas Lehmann). Now it is 13 mag (Jan. 26, Giuseppe Pappa). It is observable in excellent condition in the Northern Hemisphere. However, it will be fading rapidly after this. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 2 57.17 47 0.7 1.710 2.009 92 15.4 19:04 (130, 68)
Feb. 20 2 55.97 44 4.5 1.923 2.083 84 15.8 19:10 (120, 63)
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It brightened very rapidly in 2015 spring, and reached up to 13.8 mag (May 11, Sandor Szabo). It is bright as 14.8 mag still now (Jan. 24, Ken-ichi Kadota). It keeps 15 mag for a while until spring. It is observable in excellent condition in the Southern Hemisphere. But it locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 14 13.41 -28 12.0 3.524 3.859 102 15.5 4:45 ( 0, 27)
Feb. 20 14 15.16 -28 45.2 3.450 3.882 108 15.5 4:19 ( 0, 26)
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Now it is 15.7 mag (Dec. 19, Y. Sugiyama). It keeps 15-16 mag for a long time until 2016. It keeps observable in excellent condition in the Northern Hemisphere. It keeps unobservable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 2 42.98 72 44.6 5.035 5.275 98 15.7 19:04 (168, 50)
Feb. 20 2 45.77 72 30.2 5.114 5.285 94 15.8 19:10 (165, 48)
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Now it is bright as 15.3 mag (Feb. 10, Katsumi Yoshimoto). First return of an object discovered as an asteroid 2007 VA85 in 2007. Faint tail was observed on Jan. 8 by Hidetaka Sato. It approaches to the earth down to 0.5 a.u., will brighten up to 15-16 mag, and will be observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 6 22.43 -25 37.9 0.527 1.315 117 15.8 20:45 ( 0, 31)
Feb. 20 5 18.70 -7 35.9 0.578 1.268 105 16.2 19:17 ( 0, 48)
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Now it is 16.4 mag (Jan. 15, Thomas Lehmann). It is expected to brighten up to 7 mag in 2017 summer. In the Northern Hemisphere, it keeps observable in good condition until the highlight while the comet will be brightening. In the Southern Hemisphere, it is not observable until early 2017.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 7 2.02 64 5.6 5.024 5.616 122 16.0 21:31 (180, 61)
Feb. 20 6 55.33 63 52.2 5.031 5.555 117 16.0 20:56 (180, 61)
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Now it is 15.8 mag (Dec. 7, Yuji Ohshima). In the Northern Hemisphere, it keeps observable after this while the comet will be fading. It will be getting higher gradually after this also in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 14 23.85 24 51.0 2.347 2.886 113 16.2 4:55 ( 0, 80)
Feb. 20 14 22.98 25 51.9 2.324 2.933 118 16.2 4:26 ( 0, 81)
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It brightened up to 11-12 mag in 2012. It has already faded down to 17.2 mag (Dec. 19, Yuji Ohshima). It is observable at 16-17 mag in good condition from winter to spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 10 56.18 -6 25.7 10.051 10.940 152 16.3 1:28 ( 0, 48)
Feb. 20 10 52.89 -6 10.1 10.045 10.977 159 16.3 0:57 ( 0, 49)
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Now it is 16.9 mag (Nov. 17, J. Nicolas, C. Rinner, F. Kugel, A. Klotz). It will brighten up to 14 mag in 2017. In 2016, it keeps observable at 16 mag in good condition from winter to spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 12 4.08 12 5.1 3.069 3.924 145 16.4 2:36 ( 0, 67)
Feb. 20 12 1.08 12 35.6 3.002 3.909 152 16.3 2:05 ( 0, 67)
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Now it is 15.3 mag (Dec. 13, D. Buczynski). It kept 15 mag for a long time from 2014 to 2015. But it will be fading slowly after this. It is observable in good condition in the Northern Hemisphere. It will not be observable after this in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 0 47.90 46 42.6 5.025 4.833 73 16.3 19:04 (124, 46)
Feb. 20 0 53.20 47 8.2 5.138 4.868 68 16.4 19:10 (125, 42)
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Now it is 16.9 mag (Nov. 15, J. Bel). It will brighten up to 14 mag in summer. But it is not observable at the highlight. It keeps observable until March while the comet will be brightening gradually up to 15-16 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 1 32.50 2 4.7 2.549 2.208 58 16.4 19:04 ( 63, 37)
Feb. 20 1 44.14 3 20.4 2.595 2.185 55 16.4 19:10 ( 68, 33)
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Now it is 16.5 mag (Feb. 11, Michael Jager). The brightness differs in every apparition. It was not observed in the last apparition. In this apparition, it was expected to be observable at 14-15 mag from winter to spring. But probably it will be 16 mag at best. It locates extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 0 15.52 4 20.8 1.858 1.302 41 16.6 19:04 ( 79, 23)
Feb. 20 0 37.81 5 56.6 1.845 1.268 40 16.4 19:10 ( 82, 22)
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It approached to the sun down to 0.3 a.u. on July 6, 2015, and brighted up to 3.9 mag (July 6, Thomas Lehmann). Now it is fading. It has already faded down to 12.9 mag in October (Oct. 3, Chris Wyatt). No observations have been reported since November. In the Southern Hemisphere, it keeps observable until the comet fades out. It will not be observable after this in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 19 42.53 -58 24.7 4.293 3.737 50 16.5 5:23 (328,-21)
Feb. 20 19 54.26 -58 47.8 4.318 3.821 53 16.6 5:17 (329,-20)
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Now it is 16.9 mag (Dec. 13, K. Hills). It keeps 16-17 mag for a long time until 2016 autumn. In the Southern Hemisphere, it keeps observable in good condition for a long time. In the Northern Hemisphere, it is observable only until March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 3 40.35 -28 14.9 2.627 2.690 82 16.6 19:04 ( 14, 25)
Feb. 20 3 38.90 -28 25.2 2.678 2.652 77 16.6 19:10 ( 22, 23)
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Now it is 17.0 mag (Nov. 3, A. Maury, J.-F. Soulier, J.-G. Bosch, T. Noel). It keeps 16.5 mag for a long time in 2016, and it will be observable in excellent condition in the Southern Hemisphere. It is hardly observable in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 4 9.23 -57 43.9 3.458 3.459 81 16.6 19:04 ( 4, -3)
Feb. 20 3 56.77 -55 37.9 3.498 3.445 78 16.6 19:10 ( 10, -2)
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Now it is 16.5 mag (Dec. 20, Michael Jager). It must have been observable at 16-17 mag in good condition from summer to autumn in the Northern Hemisphere, but it was not discovered. It will be fading after this, and will be fainter than 18 mag in April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 12 4.29 33 6.6 1.704 2.559 142 16.7 2:36 ( 0, 88)
Feb. 20 11 49.30 32 13.7 1.705 2.603 149 16.8 1:54 ( 0, 87)
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Now it is bright as 16.0 mag (Jan. 29, Sandor Szabo). It keeps observable in good condition for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 5 34.31 13 3.6 2.905 3.500 119 16.8 20:03 ( 0, 68)
Feb. 20 5 35.87 12 36.9 3.008 3.515 113 16.9 19:37 ( 0, 68)
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Now it is 16.8 mag (Dec. 18, Space Surveillance Telescope, Atom Site). It is observable at 16.5 mag in excellent condition from December to February. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 8 15.28 24 44.0 1.058 2.003 156 16.8 22:43 ( 0, 80)
Feb. 20 8 13.84 25 11.9 1.106 2.019 149 16.9 22:15 ( 0, 80)
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First return of a periodic comet discovered in 2003. Now it is 15.1 mag (Dec. 17, Space Surveillance Telescope, Atom Site). It will be fading after this, and will be fainter than 18 mag in March. It is observable in excellent condition in the Northern Hemisphere. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 5 8.51 34 54.8 1.170 1.823 115 16.9 19:38 (180, 90)
Feb. 20 5 20.22 36 10.2 1.260 1.855 110 17.2 19:22 (180, 89)
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Now it is 17.0 mag (Dec. 16, Purple Mountain Observatory). It is observable at 17 mag in good condition in winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 7 51.17 26 11.3 1.441 2.353 150 17.0 22:19 ( 0, 81)
Feb. 20 7 48.61 27 16.0 1.489 2.356 143 17.1 21:49 ( 0, 82)
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Now it is 17.4 mag (Dec. 11, Purple Mountain Observatory). It will brighten up to 13 mag in summer. But it is not observable around the highlight. In the Southern Hemisphere, it is observable until February when it brightens up to 17 mag. In the Northern Hemisphere, it is observable until April when it brightens up to 16 mag. Sandor Szabo reported it is bright as 16.0 mag visually on Jan. 29.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 2 11.22 11 26.2 3.122 2.952 71 17.2 19:04 ( 63, 50)
Feb. 20 2 17.52 11 46.7 3.146 2.881 65 17.1 19:10 ( 70, 45)
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Now it is 17.5 mag (Dec. 17, Space Surveillance Telescope, Atom Site). It keeps observable at 17.5 mag in good condition from winter to spring in the Northern Hemispehre. It is observable only until mid February in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 6 40.06 39 52.6 1.704 2.477 132 17.1 21:08 (180, 85)
Feb. 20 6 24.90 42 34.9 1.771 2.444 122 17.1 20:25 (180, 82)
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Now it is 18.3 mag (Nov. 15, Hidetaka Sato). It keeps observable at 17 mag in good condition from winter to spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 14 59.91 2 8.0 2.139 2.522 101 17.2 5:23 (357, 57)
Feb. 20 15 5.30 2 10.6 2.066 2.529 106 17.1 5:09 ( 0, 57)
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It was observed as bright as 13-14 mag for a long time from 2011 to 2014. Now it is fading. It is observable in excellent condition in the Southern Hemisphere. It locates extremely low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 18 11.14 -31 16.7 9.566 8.985 51 17.2 5:23 (319, 9)
Feb. 20 18 12.37 -31 35.1 9.499 9.018 58 17.2 5:17 (322, 11)
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It has not been observed yet in this apparition. It tends to be brightest after the perihelion passage. It is observable at 17 mag in excellent condition until March in the Northern Hemisphere. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 5 19.35 39 26.3 1.014 1.708 117 17.3 19:49 (180, 86)
Feb. 20 5 31.38 38 13.4 1.054 1.702 112 17.3 19:34 (180, 87)
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It brightened up to 14.5 mag in autumn (Nov. 11, Sandor Szabo). Now it is fading. It has already faded down to 16.7 mag (Dec. 14, L. Elenin). It will be fainter than 18 mag in March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 3 8.31 11 2.6 2.225 2.343 84 17.3 19:04 ( 45, 59)
Feb. 20 3 18.50 11 58.0 2.329 2.365 79 17.5 19:10 ( 54, 56)
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Now it is 16.9 mag (Dec. 19, Y. Sugiyama). It keeps 17.5 mag for a long time from 2016 to 2019. It keeps locating near by the equator.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 8 1.38 0 22.3 9.197 10.075 151 17.4 22:29 ( 0, 55)
Feb. 20 8 0.03 0 40.2 9.229 10.063 145 17.4 22:01 ( 0, 56)
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First return of a periodic comet which brightened up to 8 mag in major outburst in 2010. It will be observable in excellent condition from winter to spring. However, now it is faint; the fragment A is 17.8 mag (Feb. 8, Ken-ichi Kadota), the fragment B is 19.0 mag (Feb. 11, Michael Jager), the fragment C is 17.0 mag (Feb. 8, Ken-ichi Kadota), the fragment D is 21.0 mag (Feb. 11, Michael Jager), the fragment F is 21.4 mag (Feb. 11, Michael Jager). It will be 17 mag at best in this apparition. Fragments E and G-J are also observed in early February.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 8 52.58 35 26.6 0.654 1.605 155 17.4 23:20 (180, 90)
Feb. 20 8 48.77 34 12.5 0.657 1.593 150 17.4 22:49 ( 0, 89)
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It brightened up to 8.8 mag in 2015 spring (Apr. 3, Marco Goiato). Now it is fading. It has already faded down to 15.9 mag (Dec. 15, S. Shurpakov). It keeps observable until March when the comet becomes fainter than 18 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 2 20.91 13 57.4 3.183 3.062 74 17.4 19:04 ( 64, 53)
Feb. 20 2 27.93 14 37.0 3.318 3.101 68 17.6 19:10 ( 71, 49)
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It has not been observed in this apparition yet. It will brighten up to 16 mag from March to June. It is observable in excellent condition in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 15 21.67 -9 7.0 1.741 2.046 93 17.6 5:23 (350, 45)
Feb. 20 15 30.07 -10 41.3 1.655 2.037 97 17.5 5:17 (354, 44)
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Now it is 17.2 mag (Nov. 18, Catalina Sky Survey). Now it is near the aphelion. It is observable at 17 mag in good condition from autumn to winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 3 13.84 16 24.3 4.107 4.173 86 17.5 19:04 ( 50, 64)
Feb. 20 3 17.35 16 46.0 4.206 4.165 80 17.5 19:10 ( 61, 59)
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Now it is 17.8 mag (Dec. 18, Hidetaka Sato). It keeps observable at 17.5 mag in good condition until April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 8 34.00 9 44.8 1.744 2.702 162 17.5 23:02 ( 0, 65)
Feb. 20 8 26.15 13 33.0 1.749 2.675 154 17.5 22:26 ( 0, 69)
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Now it is 17.6 mag (Dec. 17, A. Hidas). It keeps 17-18 mag for a long time until 2017 spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 6 36.05 -20 0.2 3.352 3.977 122 17.6 21:04 ( 0, 35)
Feb. 20 6 34.56 -18 6.9 3.377 3.954 119 17.6 20:35 ( 0, 37)
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It brightened up to 16 mag in early 2015. Now it is 18.1 mag (Dec. 12, ATLAS-HKO, Haleakala). It is observable at 18 mag from winter to spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 9 38.62 -24 6.1 5.266 6.076 142 17.6 0:11 ( 0, 31)
Feb. 20 9 30.13 -23 35.0 5.274 6.100 143 17.7 23:30 ( 0, 31)
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Now it is 17.4 mag (Jan. 13, Ken-ichi Kadota). It is observable in good condition in the Northern Hemisphere. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 10 43.80 53 46.3 1.681 2.504 138 17.7 1:16 (180, 71)
Feb. 20 10 30.19 53 40.7 1.735 2.552 137 17.8 0:35 (180, 71)
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It will pass the perihelion in 2019. However, it has not been brightening since the discovery in 2010. Now it is 17.6 mag (Dec. 3, D. Buczynski). It keeps observable in excellent condition in the Northern Hemisphere, although it becomes low temporarily in May. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 3 8.61 46 52.2 10.496 10.614 94 17.7 19:04 (133, 70)
Feb. 20 3 9.46 46 48.2 10.578 10.590 88 17.7 19:10 (127, 65)
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It brightened up to 15.2 mag in early 2015 (Feb. 24, Toshiyuki Takahashi). Now it is 17.5 mag (Dec. 6, Catalina Sky Survey). It will be fainter than 18 mag in April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 11 37.87 -6 9.8 3.937 4.782 145 17.7 2:10 ( 0, 49)
Feb. 20 11 35.25 -5 58.2 3.900 4.801 152 17.8 1:39 ( 0, 49)
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Now it is 17.9 mag (Jan. 23, T. Vorobjov). The cometary activity is confirmed recently. It is expected to brighten up to 7 mag in 2017 spring. But it locates somewhat low at the high light.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 11 51.77 -6 11.1 4.796 5.611 142 17.9 2:23 ( 0, 49)
Feb. 20 11 48.78 -5 57.0 4.667 5.546 150 17.8 1:53 ( 0, 49)
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Very far object. Outburst occured on Feb. 20, 2015, and it brightened up to 15 mag. But it is faint as 18 mag now. It is observable in excellent condition in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 13 33.40 -26 17.1 8.748 9.152 111 17.8 4:05 ( 0, 29)
Feb. 20 13 33.06 -26 21.7 8.647 9.154 118 17.8 3:37 ( 0, 29)
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Now it is 17.7 mag (Nov. 30, Hidetaka Sato). It was expected to brighten up to 14 mag from winter to summer. But it is much fainter actually. It will be observable in excellent condition in the Southern Hemisphere. It locates low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 15 39.62 -23 13.6 2.115 2.262 85 17.9 5:23 (347, 31)
Feb. 20 15 50.47 -24 43.7 2.053 2.275 89 17.9 5:17 (350, 30)
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It keeps 17.5 mag from 2016 to 2017. It is observable in good condition in the Northern Hemisphere. In the Southern Hemisphere, it locates low in 2016, and it is not observable in 2017.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 17 19.75 14 26.8 6.832 6.578 71 17.9 5:23 (293, 51)
Feb. 20 17 22.47 15 30.1 6.729 6.563 76 17.9 5:17 (296, 55)
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It keeps 17-18 mag for a long time since 2013. In the Northern Hemisphere, it is observable at 18 mag in good condition also in this winter. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Feb. 13 14 10.81 60 28.8 6.968 7.413 113 17.9 4:42 (180, 65)
Feb. 20 14 3.76 61 22.7 6.967 7.435 114 17.9 4:07 (180, 64)
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