Weekly Information about Bright Comets (2015 Apr. 18: North)

Japanese version Home page	Updated on April 19, 2015
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere. Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

C/2014 Q2 ( Lovejoy ) It brightened up to 3.7 mag and became a naked eye comet in mid January (Jan. 13, Marek Biely). Now it is fading. But it is bright as 7.1 mag still now (Apr. 18, Maik Meyer). In the Northern Hemisphere, it keeps observable all night until July when the comet will fade down to 13 mag. It is not observable in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 1 26.20 71 49.8 1.965 1.725 61 7.3 3:56 (198, 25) Apr. 25 1 27.58 74 32.5 2.031 1.791 61 7.7 3:45 (196, 28) C/2015 G2 ( MASTER ) New bright comet. Now it is 8.9 mag (Apr. 15, Chris Wyatt). It is expected to brighten up to 6 mag in May. In the Southern Hemisphere, it keeps observable in good condition until late June. In the Northern Hemisphere, it will be unobservable soon. Then it keeps unobservable until September when the comet will be fainter than 13 mag. It must have been observable at 16 mag in good condition in 2014 autumn, but it was not discovered. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 22 22.92 -19 28.4 1.133 1.034 57 8.9 3:56 (296, 3) Apr. 25 22 52.56 -23 27.0 0.891 0.955 60 8.0 3:45 (298, -1) 88P/Howell Now it is very bright as 9.3 mag (Apr. 15, Chris Wyatt). In the Southern Hemisphere, it keeps observable in good condition for a long time until the comet fades out. In the Northern Hemisphere, it keeps extremely low and hard to observe until June. It will be observable in good condition after June while the comet will be fading gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 22 37.92 -11 58.5 1.753 1.365 50 8.7 3:56 (288, 5) Apr. 25 22 59.90 -9 56.4 1.742 1.374 52 8.7 3:45 (286, 5) 19P/Borrelly Now it is 12.8 mag (Mar. 21, Michael Mattiazzo). It will brighten up to 10.5 mag in May and June, but it is not observable. In the Northern Hemisphere, it will be observable after autumn while the comet will be fading. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 2 26.79 3 9.4 2.388 1.430 13 11.3 20:03 (105,-14) Apr. 25 2 46.21 6 13.1 2.377 1.406 11 11.1 20:11 (110,-15) C/2015 F3 ( SWAN ) Bright new comet. Now it is so bright as 10.4 mag (Apr. 15, Maik Meyer). It seems to be a fragment of Comets C/1988 A1 (Liller) and C/1996 Q1 (Tabur). It must have been visible bright in the evening sky from December to February in the Northern Hemisphere, but it was not discovered. It will be fading after this. But it is observable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it is not observable until June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 0 20.07 73 1.0 1.088 1.105 63 11.1 3:56 (200, 30) Apr. 25 1 23.35 82 57.8 1.059 1.187 70 11.4 3:45 (188, 32) C/2013 US10 ( Catalina ) It brightened up to 13.6 mag until the end of 2014, brighter than originally expected (Dec. 19, Chris Wyatt). Now it is 13.1 mag (Apr. 15, Chris Wyatt). It is expected to brighten up to 4 mag from autumn to winter. It keeps observable in excellent condition until autumn in the Southern Hemisphere. In the Northern Hemisphere, it is hardly observable until December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 23 24.58 -21 45.2 3.889 3.282 46 11.6 3:56 (290,-10) Apr. 25 23 29.33 -21 57.9 3.715 3.201 52 11.4 3:45 (292, -7) 6P/d'Arrest It will brighten up to 11 mag in April and May. But the condition is bad in this apparition. In the Southern Hemisphere, it is getting higher gradually in the morning sky. It will not be observable until late July in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 0 30.80 -3 47.7 2.334 1.461 22 11.5 3:56 (265,-13) Apr. 25 0 51.81 -2 32.4 2.348 1.491 24 11.4 3:45 (264,-13) C/2015 F5 ( SWAN-Xingming ) New bright comet. Now it is 10.1 mag (Apr. 15, Sandor Szabo). In the Northern Hemisphere, it will be getting higher rapidly in the evening sky. But it will fade out rapidly. It will be fainter than 18 mag in early June. It is not observable in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 2 29.49 48 47.8 0.624 0.656 39 11.6 20:03 (140, 16) Apr. 25 4 54.31 52 16.7 0.774 0.800 51 13.0 20:11 (134, 33) C/2014 Q1 ( PanSTARRS ) It will approach to the sun down to 0.3 a.u. in July, and it is expected to be bright. It brightened up to 15.6 mag in January (Jan. 13, Yasukazu Ikari). In the Southern Hemisphere, it is hard to observe for a while after this. But it will be observable after mid July, and keeps observable while the comet will be fading gradually. 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) Apr. 18 0 46.61 0 5.5 2.706 1.773 17 12.1 3:56 (260,-14) Apr. 25 0 59.31 2 23.0 2.564 1.656 20 11.7 3:45 (259,-12) C/2015 C2 ( SWAN ) Bright new comet. Now it is so bright as 9.5 mag (Mar. 18, Sandor Szabo). In the Northern Hemisphere, it keeps locating extremely low and hard to observe. It will be getting higher gradually after May, but the comet will be fainter than 14 mag. It is not observable after this in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 1 27.72 36 59.8 1.920 1.118 26 12.3 3:56 (225, 2) Apr. 25 1 32.39 42 3.6 1.976 1.216 30 13.0 3:45 (223, 8) 218P/LINEAR Now it is 15.5 mag (Mar. 1, Taras Prystavski). It is expected to brighten rapidly and will be observable in good condition at 13 mag from March to May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 19 15.96 -16 40.7 0.468 1.173 99 13.2 3:56 (332, 33) Apr. 25 19 45.80 -15 7.9 0.469 1.172 98 13.2 3:45 (328, 33) C/2012 F3 ( PanSTARRS ) Now it is 14.9 mag (Apr. 1, Taras Prystavski). In 2015, it keeps 13-14 mag and will be observable in good condition for a long time. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 19 13.07 -10 21.1 3.158 3.458 98 13.4 3:56 (329, 39) Apr. 25 19 17.65 -9 57.0 3.071 3.461 104 13.3 3:45 (332, 41) 29P/Schwassmann-Wachmann 1 Now it is so faint as 16.8 mag (Mar. 16, Tsutomu Seki). Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 17 58.00 -31 29.8 5.521 6.051 117 13.6 3:56 (355, 23) Apr. 25 17 57.38 -31 35.2 5.424 6.049 124 13.5 3:45 (359, 23) 22P/Kopff Now it is 15.2 mag and visible visually (Mar. 18, Sandor Szabo). It will brighten up to 11 mag in 2015 autumn. In this apparition, it is observable until the highlight while the comet is brightening. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 12 40.10 4 5.3 1.404 2.368 158 13.9 22:54 ( 0, 59) Apr. 25 12 34.19 4 41.6 1.396 2.326 150 13.7 22:21 ( 0, 60) C/2014 W11 ( PanSTARRS ) It brightened very rapidly. Now it is so bright as 14.6 mag and visible visually (Apr. 12, Sandor Szabo). It keeps 14-15 mag for a while after this. In the Northern Hemisphere, it will be getting lower gradually after May, and will be unobservable in mid June. In the Southern Hemisphere, it will be getting lower gradually after June, and will be unobservable in early August. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 8 51.01 9 25.9 3.059 3.456 104 14.3 20:03 ( 30, 61) Apr. 25 8 54.47 9 8.6 3.145 3.450 99 14.3 20:11 ( 43, 57) C/2012 K1 ( PanSTARRS ) It brightened up to 6.9 mag in 2014 autumn (Oct. 17, Marco Goiato). Now it is fading. But it is bright as 12.6 mag still now (Feb. 9, Chris Wyatt). In the Southern Hemisphere, it had been unobservable temporarily for a while, but it will be observable in good condition again after this. It will be observable again in mid June also in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 0 44.43 -17 9.1 4.243 3.424 31 14.3 3:56 (275,-23) Apr. 25 0 47.16 -16 53.9 4.264 3.500 35 14.4 3:45 (277,-20) C/2015 D1 ( SOHO ) The spacecraft observed it brightened rapidly from 9 mag up to 2 mag when passing near by the sun. The nucleus has been already disintegrated, but the remnant was visible bright also on the earth (Mar. 7, Juan Jose Gonzalez). Now it is fainter than 10.3 mag (Mar. 17, Marek Biely). It locates high in the evening sky 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) Apr. 18 4 39.91 52 45.7 1.951 1.606 55 14.5 20:03 (134, 35) Apr. 25 5 5.51 53 13.6 2.138 1.737 53 15.0 20:11 (135, 34) C/2013 A1 ( Siding Spring ) It brightened up to 9 mag from autumn to winter in 2014. Now it is fading rapidly. It has already faded down to 13.5 mag (Mar. 28, Taras Prystavski). In the Northern Hemisphere, it will be observable in excellent condition after this while the comet will be fading. In the Southern Hemisphere, it is hardly observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 16 12.16 53 14.5 2.238 2.730 108 14.6 2:31 (180, 72) Apr. 25 15 42.04 55 22.3 2.310 2.802 108 14.9 1:34 (180, 70) 7P/Pons-Winnecke It must have brightened up to 11 mag from January to February, but no observations have been reported. Now it is 16.3 mag (Mar. 29, A. Maury, J.-F. Soulier, J.-G. Bosch, T. Noel). In the Southern Hemisphere, it is observable in the morning sky after this while the comet will be fading. It is hardly observable in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 23 40.78 -15 41.0 2.176 1.546 39 14.8 3:56 (283, -9) Apr. 25 23 59.71 -14 41.6 2.190 1.594 42 15.0 3:45 (281, -9) 32P/Comas Sola Now it is 13.5 mag (Mar. 14, Chris Wyatt). It is fainter than originally predicted by 2 mag. It will be fading gradually after this. But it keeps observable in good condition for a while. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 11 12.34 18 45.8 1.760 2.552 132 15.1 21:27 ( 0, 74) Apr. 25 11 12.27 17 58.6 1.856 2.587 126 15.3 21:00 ( 0, 73) C/2013 C2 ( Tenagra ) Very far object. However, outburst occured on Feb. 20, and now it brightened up to 15.3 mag (Feb. 28, Taras Prystavski). It is reported so bright visually as 12.5 mag (Mar. 22, Marco Goiato). It locates high 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) Apr. 18 12 5.75 -22 17.8 8.231 9.145 154 15.2 22:21 ( 0, 33) Apr. 25 12 4.23 -21 57.5 8.265 9.143 149 15.2 21:52 ( 0, 33) C/2015 F4 ( Jacques ) Now it is 15.7 mag (Mar. 31, MASTER-SAAO Observatory). It is expected to brighten up to 12 mag from July to August. In the Southern Hemisphere, it keeps observable in good condition until summer. In the Northern Hemisphere, it will be getting higher gradually after May, and will be observable in good condition after summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 20 19.14 -41 0.8 1.992 2.231 90 15.5 3:56 (331, 5) Apr. 25 20 28.68 -39 17.7 1.855 2.175 94 15.2 3:45 (331, 8) C/2006 S3 ( LONEOS ) It brightened up to 11-12 mag in 2012. It has already faded down to 15.2 mag (Mar. 16, Taras Prystavski). It keeps observable at 15 mag in good condition until summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 11 11.30 -6 20.0 8.507 9.324 142 15.3 21:26 ( 0, 49) Apr. 25 11 8.14 -5 56.3 8.622 9.361 135 15.4 20:55 ( 0, 49) C/2014 N3 ( NEOWISE ) Now it is 15.3 mag (Jan. 7, Taras Prystavski). It keeps 15 mag for a long time from 2014 to 2015. It is observable in excellent condition in 2014 in the Southern Hemisphere, or in 2015 in the Northern Hemisphere. It becomes unobservable temporarily from March to May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 1 19.37 8 25.4 4.892 3.895 5 15.4 3:56 (248,-15) Apr. 25 1 25.06 9 56.7 4.883 3.900 10 15.4 3:45 (248,-12) C/2011 KP36 ( Spacewatch ) Now it is 15.3 mag (Mar. 28, Taras Prystavski). Distant object, but it keeps observable at 14-15 mag for a long time from 2015 to 2016. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 21 12.54 -2 53.6 5.973 5.679 68 15.4 3:56 (295, 27) Apr. 25 21 16.40 -2 30.9 5.849 5.655 73 15.4 3:45 (297, 30) C/2014 R1 ( Borisov ) It brightened up to 10.6 mag from autumn to winter (Nov. 29, Seiichi Yoshida). Now it is 14.3 mag (Mar. 24, Taras Prystavski). It will be fading graudually after this. But it keeps observable for a long time until the comet fades out. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 17 40.76 -14 37.9 1.780 2.461 121 15.5 3:56 (359, 40) Apr. 25 17 38.25 -14 41.1 1.776 2.534 129 15.7 3:29 ( 0, 40) 205P/Giacobini First return of a comet re-discovered after 112-year blank in 2008. It brightened up to 12 mag in 2008. It is expected to brighten up to 15 mag from spring to summer in this apparition. It keeps locating low in the morning sky for a while. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 22 51.54 0 50.7 2.129 1.561 43 15.5 3:56 (276, 10) Apr. 25 23 12.08 2 22.2 2.092 1.550 44 15.5 3:45 (274, 10) C/2010 S1 ( LINEAR ) Now it is 14.7 mag (Apr. 1, Taras Prystavski). It is observable at 15-16 mag in good condition in 2015. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 18 56.93 -18 49.3 7.319 7.623 103 15.6 3:56 (337, 33) Apr. 25 18 54.73 -19 9.5 7.230 7.653 111 15.6 3:45 (343, 34) C/2013 X1 ( PanSTARRS ) Now it is 14.8 mag and visible visually (Mar. 18, Sandor Szabo). It will pass close to the earth from spring to summer in 2016, and it is expected to be observable at 6-7 mag in good condition. It is already unobservable in the Southern Hemisphere. In the Northern Hemispehre, it will be getting lower gradually and will be unobservable temporarily in mid May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 4 47.02 33 28.3 5.307 4.696 48 15.8 20:03 (112, 29) Apr. 25 4 48.84 33 24.0 5.329 4.629 41 15.8 20:11 (116, 23) 57P/du Toit-Neujmin-Delporte Now it is 16.6 mag (Apr. 1, Taras Prystavski). It is expected to brighten up to 15 mag in summer, and will be observable in excellent condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 21 19.55 -12 46.8 1.843 1.758 69 15.9 3:56 (302, 19) Apr. 25 21 36.77 -11 20.2 1.782 1.747 71 15.8 3:45 (301, 20) C/2013 V2 ( Borisov ) Now it is 14.8 mag (Mar. 21, Taras Prystavski). In the Northern Hemisphere, it keeps 15-16 mag and observable in excellent condition until early summer. It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 12 56.69 32 40.6 3.116 3.895 135 15.9 23:11 ( 0, 88) Apr. 25 12 52.08 31 45.0 3.181 3.923 131 15.9 22:39 ( 0, 87) 116P/Wild 4 Now it is 17.6 mag (Feb. 23, Mitsunori Tsumura). It will brighten up to 13 mag in 2016. It will be getting lower after this, and will be unobservable in early June. It is fainter than this ephemeris recently. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 6 23.24 26 40.4 3.038 2.817 67 16.1 20:03 ( 94, 46) Apr. 25 6 32.41 26 28.3 3.100 2.791 63 16.1 20:11 ( 97, 40) C/2015 F2 ( Polonia ) Now it is 16.1 mag (Mar. 31, Polonia Observatory). It approaches to the earth, and brightens up to 16 mag from April to May. But it will be fainter than 18 mag in July. It is observable in excellent condition in the Southern Hemisphere. It will be observable in excellent condition after May also in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 20 31.08 -33 47.4 0.755 1.212 85 16.2 3:56 (325, 10) Apr. 25 20 53.96 -27 2.5 0.733 1.202 85 16.1 3:45 (320, 15) 15P/Finlay It brightened up to 7-8 mag in outburst twice from December to January. Now it is fading. It has already faded down to 13.4 mag (Mar. 16, Catalina Sky Survey). In the Northern Hemisphere, it will be getting lower gradually after this, and will be unobservable in late May. In the Southern Hemisphere, it keeps locating extremely low after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 4 40.28 27 20.4 2.343 1.782 45 16.3 20:03 (107, 26) Apr. 25 5 0.63 27 51.5 2.455 1.849 42 16.8 20:11 (109, 23) C/2014 W9 ( PanSTARRS ) It brightened rapidly. Now it is 16.0 mag, much brighter than origianlly predicted (Mar. 28, Taras Prystavski). However, it will fade out rapidly after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 16 24.86 -31 1.1 0.889 1.763 137 16.3 2:43 ( 0, 24) Apr. 25 16 24.28 -32 26.5 0.892 1.802 143 16.6 2:15 ( 0, 23) 110P/Hartley 3 It brightened up to 13.8 mag in winter (Feb. 15, Jakub Cerny). Now it is fading. It has already faded down to 15.2 mag (Mar. 17, Space Surveillance Telescope, Atom Site). It will be getting lower after May. It will be unobservable in June in the Northern Hemisphere, or in July in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 7 10.17 18 4.3 2.573 2.582 79 16.7 20:03 ( 74, 51) Apr. 25 7 19.67 17 34.7 2.670 2.594 74 16.8 20:11 ( 79, 46) P/2014 X1 ( Elenin ) Brightened rapidly, and it keeps brightening even after the perihelion passage. Now it is bright as 15.8 mag and visible visually (Mar. 18, Sandor Szabo). It seems to keep 16 mag for some more time. It is observable in excellent 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) Apr. 18 7 56.28 49 14.8 1.947 2.101 84 16.7 20:03 (133, 65) Apr. 25 8 14.86 47 47.1 2.039 2.138 81 16.9 20:11 (128, 63) 70P/Kojima Now it is 15.2 mag and visible visually (Mar. 18, Sandor Szabo). It keeps observable in good condition after this, but it will be fading gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 11 48.10 11 41.4 1.565 2.449 144 16.8 22:03 ( 0, 67) Apr. 25 11 46.78 11 35.0 1.644 2.479 137 17.0 21:34 ( 0, 66) C/2013 G9 ( Tenagra ) Now it is 15.3 mag (Mar. 16, Taras Prystavski). It keeps 17-18 mag for a long time from 2014 to 2016. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 11 22.04 -20 30.6 4.530 5.382 144 16.8 21:36 ( 0, 34) Apr. 25 11 13.78 -19 42.8 4.602 5.389 137 16.8 21:01 ( 0, 35) 10P/Tempel 2 Now it is 17.8 mag (Feb. 25, A. Diepvens). It keeps observable after this while the comet will be getting brighter graudually. It will brighten up to 11 mag from autumn to winter. But it locates low at that time. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 14 43.59 5 18.2 1.460 2.420 157 16.9 1:02 ( 0, 60) Apr. 25 14 37.39 6 10.1 1.409 2.377 159 16.8 0:29 ( 0, 61) 299P/2014 D2 ( Catalina-PanSTARRS ) Now it is 17.7 mag (Feb. 17, K. Hills). It keeps observable at 17 mag from spring to summer. It locates somewhat low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 17 20.16 -28 57.5 2.456 3.152 125 16.9 3:38 ( 0, 26) Apr. 25 17 19.90 -28 49.9 2.384 3.155 132 16.9 3:11 ( 0, 26) 269P/2012 R2 ( Jedicke ) Now it is 15.9 mag (Mar. 11, Taras Prystavski). It keeps observable at 16-17 mag in good condition for a while. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 8 2.49 14 5.4 4.008 4.171 92 17.0 20:03 ( 55, 58) Apr. 25 8 6.51 13 59.7 4.118 4.180 86 17.1 20:11 ( 64, 53) 51P/Harrington It has not been observed yet in this apparition. But it must have already brightened up to 17.5 mag. It will be observable at 13 mag in good condition from summer to autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 21 43.45 -16 27.2 2.234 2.023 64 17.4 3:56 (300, 12) Apr. 25 21 59.37 -15 22.4 2.140 1.990 67 17.1 3:45 (300, 13) P/2015 F1 ( PanSTARRS ) Now it is 17.2 mag (Mar. 24, iTelescope Observatory, Siding Spring). It keeps 17 mag until July. 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) Apr. 18 16 47.03 -23 33.1 1.746 2.549 134 17.3 3:05 ( 0, 31) Apr. 25 16 46.05 -23 42.0 1.689 2.552 141 17.2 2:37 ( 0, 31) 221P/LINEAR Now it is 19.3 mag (Mar. 27, Pan-STARRS 1, Haleakala). It will brighten rapidly, and will be observable at 16.5 mag in good condition from May to July. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 16 27.77 -22 13.4 1.042 1.915 138 17.4 2:46 ( 0, 33) Apr. 25 16 30.85 -21 9.7 0.978 1.891 144 17.2 2:21 ( 0, 34) 40P/Vaisala 1 It brightened up to 15.5 mag from autumn to winter (Nov. 25, Taras Prystavski). Now it is fading. It has already faded down to 16.7 mag (Mar. 28, Taras Prystavski). It keeps observable in good condition for a while. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 17 58.37 -8 53.7 1.721 2.352 116 17.3 3:56 (353, 46) Apr. 25 17 59.12 -8 36.2 1.689 2.393 123 17.3 3:45 (358, 46) C/2012 K8 ( Lemmon ) Now it is 18.0 mag (Feb. 27, W. Hasubick). It keeps observable at 17-18 mag for a long time from 2013 to 2016. It keeps locating high in the Northern Hemisphere. It keeps locating very low in the Southern Hemipshere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 16 46.51 62 49.7 6.443 6.666 98 17.3 3:04 (180, 62) Apr. 25 16 34.98 63 49.4 6.459 6.678 98 17.3 2:25 (180, 61) 53P/Van Biesbroeck Now it is 18.6 mag (Feb. 16, K. Hills). It will brighten up to 14 mag and will be observable in good condition in 2016. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 12 43.20 2 13.2 2.768 3.730 160 17.4 22:58 ( 0, 57) Apr. 25 12 39.26 2 41.1 2.771 3.696 152 17.3 22:26 ( 0, 58) 318P/2014 M6 ( McNaught-Hartley ) First return of a periodic comet discovered in 1994. Now it is 18.0 mag (Mar. 31, MASTER-SAAO Observatory). It will brighten up to 15 mag from summer to autumn, and will be 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) Apr. 18 21 27.04 -32 49.0 3.056 2.952 74 17.5 3:56 (315, 4) Apr. 25 21 38.20 -32 35.5 2.943 2.919 78 17.3 3:45 (316, 5) C/2013 G3 ( PanSTARRS ) Now it is 17.7 mag (Jan. 20, Taras Prystavski). It was observed at 17 mag in 2014 summer. In the Northern Hemisphere, it is observable at 17.5 mag in excellent condition also in 2015. It is not observable in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 21 30.17 43 37.0 4.431 4.079 63 17.3 3:56 (241, 45) Apr. 25 21 38.46 44 44.7 4.423 4.099 64 17.4 3:45 (239, 47) C/2014 Y1 ( PanSTARRS ) It will brighten up to 14 mag in 2016 spring. Now it is 16.5 mag (Mar. 30, Taras Prystavski). In 2015, it is observable in good condition until spring in the Northern Hemisphere. In the Southern Hemisphere, it is not observable in 2015. But it will be observable in good condition at the high light in 2016. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 7 27.21 36 28.0 3.759 3.733 80 17.6 20:03 (103, 62) Apr. 25 7 32.45 35 50.8 3.801 3.677 75 17.6 20:11 (104, 56) 4P/Faye Now it is 16.0 mag (Mar. 20, Yasukazu Ikari). It keeps observable for a long time after this while the comet will be fading gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 9 10.98 8 23.6 2.739 3.223 109 17.6 20:03 ( 20, 62) Apr. 25 9 13.96 8 34.7 2.872 3.263 103 17.7 20:11 ( 35, 59) C/2013 U2 ( Holvorcem ) Now it is 17.5 mag (Feb. 19, W. Hasubick). It was observed around 17-18 mag in early 2014. It will be observable around 17-18 mag again from 2014 autumn to 2015 spring, in excellent 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) Apr. 18 9 51.07 50 18.1 4.996 5.283 101 17.7 20:07 (180, 75) Apr. 25 9 51.21 49 6.9 5.093 5.297 96 17.8 20:11 (160, 75) C/2013 V5 ( Oukaimeden ) It brightened up to 6.5 mag in September (Sept. 21, Marco Goiato). Now it is fading rapidly. It has already faded down to 16.9 mag (Mar. 28, Taras Prystavski). Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 13 38.98 27 19.9 2.419 3.270 142 17.8 23:52 ( 0, 82) Apr. 25 13 23.86 28 0.7 2.542 3.354 137 18.0 23:10 ( 0, 83) C/2014 W6 ( Catalina ) Now it is 17.7 mag (Feb. 24, K. Hills). It keeps observable at 17 mag from winter to 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) Apr. 18 10 12.79 -31 52.7 2.387 3.101 127 17.8 20:28 ( 0, 23) Apr. 25 10 8.06 -32 5.4 2.455 3.109 122 17.9 20:11 ( 4, 23) 65P/Gunn Now it is 17.6 mag (Jan. 21, Catalina Sky Survey). Now it is around the aphelion. In the Northern Hemisphere, it is observable at 18 mag in good condition from winter to spring. It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Apr. 18 8 31.44 28 24.0 4.294 4.505 95 17.8 20:03 ( 73, 72) Apr. 25 8 33.53 28 4.9 4.390 4.494 89 17.8 20:11 ( 81, 66)