 | Brightening rapidly. Now it is 5.5 mag (June 6, Alexandre Amorim). It will approach to the sun down to 0.4 A.U. in July, and it is expected to reach up to 2-3 mag. In the Northern Hemisphere, it is observable only until late June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 1 52.83 38 49.7 1.203 0.799 41 5.7 3:01 (237, 21)
June 12 3 5.00 45 37.0 1.143 0.667 35 4.7 2:59 (226, 17)
|
 | Now it is so bright as 8.3 mag (June 4, Juan Jose Gonzalez). It keeps observable for a long time until when it fades out in the Northern Hemisphere. It will be visible visually until autumn, although it will be low in July. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 6 23.62 74 46.2 1.874 1.513 53 9.1 20:55 (164, 28) June 12 6 50.95 71 9.0 1.997 1.550 49 9.4 21:00 (160, 26) |
 | Brightening rapidly. It is already so bright as 10.3 mag (June 6, Marco Goiato). It keeps observable bright as 9-10 mag for a long time until autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 22 28.42 -7 36.1 0.913 1.457 98 10.1 3:01 (312, 34) June 12 22 49.81 -7 11.7 0.868 1.443 99 9.9 2:59 (312, 35) |
 | It reached up to 7.7 mag in last summer (Aug. 13, Chris Wyatt). It is fading now. It has already faded down to 11.5 mag (May 23, Marco Goiato). In the Southern Hemisphere, it keeps observable for a long time after this. But in the Northern Hemisphere, it is only observable in the low sky in spring, then it will never be observable again. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 19 39.44 -40 29.9 3.596 4.424 140 11.6 2:48 ( 0, 15) June 12 19 28.18 -42 1.5 3.579 4.468 147 11.6 2:09 ( 0, 13) |
 | It reached up to 9.2 mag in March (Mar. 20, Marco Goiato). Now it is fading, but still bright as 10.5 mag (June 5, Marco Goiato). It keeps observable in a good condition for a long time. It keeps observable until autumn when it fades down to 16 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 14 7.03 -6 27.0 1.004 1.881 137 11.6 21:12 ( 0, 48) June 12 14 10.83 -7 11.2 1.081 1.915 131 11.9 21:00 ( 4, 48) |
 | It brightened up to 15.5 mag in January (Jan. 31, C. Rinner, F. Kugel). It is not observable now. The condition of this apparition is bad. It will reach up to 11-12 mag from spring to autumn, but it is not observable. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 4 17.60 22 51.0 2.390 1.391 7 11.8 3:01 (230,-13) June 12 4 43.11 22 53.7 2.372 1.376 8 11.7 2:59 (230,-13) |
 | Chris Wyatt reported it was visible visually at 11.3 mag on Apr. 25. But no other observations have been reported. The condition of this apparition is very bad. It will never be observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 4 2.33 22 29.2 1.735 0.765 11 12.0 3:01 (233,-10) June 12 4 42.39 22 45.2 1.780 0.791 8 12.1 2:59 (230,-13) |
 | Now it is visible visually at 12.3 mag (May 22, Juan Jose Gonzalez). It will brighten up to 12-13 mag in summer. But it locates somewhat low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 21 12.14 -26 34.6 1.830 2.510 121 12.9 3:01 (340, 26) June 12 21 14.54 -27 10.4 1.772 2.520 127 12.9 2:59 (346, 26) |
 | It brightened up to 9.5 mag in January (Jan. 13, Juan Jose Gonzalez). Now it is fading rapidly. But it is still bright as 12.3 mag (June 4, Juan Jose Gonzalez). It will be observable in good condition for a long time after this in the Northern Hemisphere. It keeps visible visually until summer. In mid March, the nuclear fragmentation was observed. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 14 35.61 61 44.2 3.288 3.467 91 13.4 21:40 (180, 63) June 12 14 34.03 60 41.9 3.377 3.521 89 13.6 21:11 (180, 64) |
 | Bright new comet discovered as a bright stellar object of 12.5 mag on Apr. 16. It was not detected, fainter than 20 mag, on the previous day (Apr. 15, Catalina Sky Survey). It was discovered just after the sudden outburst. It is bright as 11.8 mag still now (June 3, Juan Jose Gonzalez). The coma is expanding up to 3 arcmin.It keeps observable good condition for a while. The coma will be expanding rapidly after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 13 14.98 2 32.4 2.477 3.132 121 13.4 20:55 ( 16, 56) June 12 13 15.03 1 49.1 2.562 3.136 115 13.7 21:00 ( 29, 53) |
| It passes the perihelion in August. But the condition of this apparition is bad. It is not observable in the Northern Hemisphere. In the Southern Hemisphere, it appears in the evening sky at 9 mag in late August, then it will keep observable while fading rapidly. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 3 5.05 23 39.7 2.170 1.314 24 14.4 3:01 (241, 0) June 12 3 29.63 25 13.9 2.049 1.210 25 13.4 2:59 (240, 1) |
 | Great outburst up to 11 mag occured on Feb. 2. Another new minor outburst occured on Apr. 16 (Albert Sanchez Caso). It is bright as 11.8 mag still now (June 3, Juan Jose Gonzalez). Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 9 28.10 12 15.6 6.551 6.214 66 14.0 20:55 ( 86, 27) June 12 9 31.39 11 57.9 6.651 6.215 60 14.1 21:00 ( 90, 21) |
 | Now it is visible visually at 14.3 mag (May 21, Alan Hale). It keeps observable for a long time until September when it becomes fainter than 18 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 16 11.10 -27 20.0 0.775 1.782 169 15.0 23:16 ( 0, 28) June 12 16 11.31 -26 25.2 0.806 1.804 164 15.1 22:48 ( 0, 29) |
 | Now it is 15.5 mag (Feb. 20, S. Plaksa, E. Bryssinck). It is also visible visually at 14.5 mag (Apr. 10, Juan Jose Gonzalez). It keeps observable at 15 mag for a long time in 2010. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 17 53.48 39 27.7 4.067 4.608 116 15.2 1:02 (180, 86) June 12 17 49.75 40 23.4 4.059 4.597 116 15.2 0:30 (180, 85) |
 | Now it is 15.5 mag (May 14, Richard Brown). It keeps bright as 14-15 mag for a long time after this until 2013. It is observable in good condition in the Southern Hemisphere. However, it is not observable in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 14 53.16 -48 23.1 5.996 6.853 145 15.2 21:57 ( 0, 7) June 12 14 46.95 -48 23.3 6.008 6.824 140 15.2 21:24 ( 0, 7) |
 | It had been unobservable for a while, but it is getting observable in the morning sky now. Now it is 16.1 mag (June 3, Francois Kugel). It keeps observable after this while fading gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 2 39.52 39 42.1 2.813 2.034 32 15.4 3:01 (231, 14) June 12 2 56.18 42 20.0 2.816 2.074 35 15.5 2:59 (230, 17) |
| Now it is 15.6 mag (June 8, Robert McNaught). It is expected to keep so bright as 6-8 mag for a long time from 2011 to 2012, and to be observable in good condition in the Northern Hemisphere. In 2010, it is observable in the Southern Hemisphere while brightening slowly. It locates low in the Northern Hemisphere, but it keeps observable until the end of 2010. It is observable in a very good condition in the Southern Hemisphere now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 23 58.19 -32 2.8 6.290 6.348 88 15.5 3:01 (312, 2) June 12 23 58.47 -32 17.9 6.126 6.289 94 15.4 2:59 (316, 5) |
| The condition of this apparition is very bad. It will go away without any observations. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 6 5.50 18 55.4 2.171 1.244 17 15.4 20:55 (120, -9) June 12 6 32.87 18 17.5 2.203 1.274 17 15.6 21:00 (121,-10) |
 | It became bright more rapidly than expected. Now it is 14.8 mag (Apr. 6, Catalina Sky Survey). It keeps 15 mag for a while. But it will be getting lower gradually in the evening sky. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 8 11.65 31 22.7 2.333 1.771 45 15.5 20:55 (114, 22) June 12 8 33.74 30 14.8 2.399 1.804 43 15.6 21:00 (114, 19) |
 | Now it is 15.2 mag (May 12, Hidetaka Sato). It will be observable at 13-14 mag for a long time from 2011 to 2012. In 2010, it is observable at 15-16 mag in good condition from spring to autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 21 53.14 2 10.3 6.884 7.172 102 15.6 3:01 (313, 47) June 12 21 50.17 2 11.8 6.732 7.138 109 15.5 2:59 (322, 51) |
 | Now it is 15.8 mag (May 15, Toshiyuki Takahashi). It was observed as 15-16 mag in early 2009. In 2010, it was also observed at 16 mag in good condition from winter to spring. But it will be getting lower in the evening sky after this. It will be too low to observe in August. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 13 18.29 -2 2.0 3.041 3.711 124 15.8 20:55 ( 13, 52) June 12 13 18.08 -2 17.3 3.132 3.718 117 15.9 21:00 ( 26, 50) |
| Now it is 18.0 mag (May 25, C. Rinner, F. Kugel). This apparition is best condition. It will approach to the earth down to 0.12 A.U. in October, and brighten up to 5 mag. It will be visible with naked eyes. In the Northern Hemisphere, it keeps observable all through this apparition until 2011 June when it fades down to 17 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 21 38.03 4 47.7 1.567 2.074 104 16.7 3:01 (315, 51) June 12 21 45.55 6 40.9 1.443 2.012 108 16.3 2:59 (320, 55) |
 | It reached up to 15.0 mag in March (Mar. 8, D. Storey). Now it is fading. It has already faded down to 16.2 mag (May 4, L. Elenin, S. Plaksa, D. Chestnov, A. Novichonok). It will be too low to observe in July at 17 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 10 56.38 13 17.4 2.119 2.288 86 16.4 20:55 ( 72, 45) June 12 11 5.70 11 59.0 2.206 2.298 82 16.6 21:00 ( 75, 40) |
 | It brightened up to 11 mag in spring and summer in 2009. Appearing in the morninig sky again. Now it is 16.4 mag (May 1, Ken-ichi Kadota). It keeps observable after this until autumn when it becomes fainter than 18 mag while fading gradually. But it locates somewhat low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 20 10.64 -25 4.3 2.207 3.006 134 16.5 3:01 (355, 30) June 12 20 7.76 -25 21.5 2.169 3.033 141 16.6 2:48 ( 0, 30) |
 | Now it is 14.1 mag (May 5, Hidetaka Sato), much brighter than this ephemeris. It has a very faint large coma. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 11 28.51 46 30.0 1.650 1.780 79 16.6 20:55 (123, 61) June 12 11 43.63 41 6.9 1.735 1.839 79 16.8 21:00 (112, 58) |
 | It brightened up to 13 mag and observed visually from 2007 to 2009. Due to the far distance, it is bright as 15.7 mag still now (May 20, H. Sato, T. Yusa, M. Suzuki). It will be getting lower in the evening sky after this, and it will be too low to observe in August. However, it will be observable in good condition again at 17.5 mag in autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 11 41.04 41 11.1 8.302 8.261 84 16.8 20:55 (113, 64) June 12 11 38.91 40 43.2 8.437 8.295 78 16.9 21:00 (112, 57) |
| Now it is 17.2 mag (May 16, Ken-ichi Kadota). It keeps 17 mag for a while after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 15 22.87 -2 18.8 1.631 2.564 150 17.0 22:27 ( 0, 53) June 12 15 20.21 -2 58.9 1.649 2.546 144 16.9 21:57 ( 0, 52) |
 | It was bright as 15 mag in early May at the discovery. But it is fading rapidly. It has already faded down to 16.9 mag (June 1, Hidetaka Sato). It will be fainter than 18 mag in late June. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 14 41.63 22 55.4 1.530 2.267 124 17.0 21:45 ( 0, 78) June 12 14 21.28 24 5.2 1.692 2.323 115 17.3 21:00 ( 4, 79) |
| Now it is 17.2 mag (May 19, Hidetaka Sato). It will be observable at 17 mag in good condition in summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 21 44.76 -8 43.6 2.928 3.390 108 17.1 3:01 (324, 39) June 12 21 35.12 -7 43.2 2.807 3.392 117 17.0 2:59 (333, 44) |
 | Now it is 17.8 mag (May 17, Catalina Sky Survey). It will reach up to 17 mag in spring and summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 21 10.58 -10 5.1 2.851 3.432 116 17.1 3:01 (334, 41) June 12 21 9.77 -11 42.9 2.778 3.454 124 17.1 2:59 (343, 42) |
 | Now it is 17.2 mag (May 23, J. Gonzalez). It keeps observable at 17.5 mag in good condition for a long time in 2010. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 22 16.15 84 3.3 5.131 4.852 68 17.4 3:01 (185, 40) June 12 21 18.86 85 15.0 5.121 4.856 69 17.4 2:59 (182, 40) |
 | Now it is 17.2 mag (May 7, Hiroshi Abe). It will be fainter than 18 mag in July. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 18 50.20 42 45.8 6.559 6.959 109 17.7 1:58 (180, 82) June 12 18 46.83 43 7.2 6.584 7.009 110 17.7 1:27 (180, 82) |
| Now it is 17.8 mag (May 14, Hiroshi Abe). It keeps observable at 17-18 mag for a long time until 2011 summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 5 20 42.55 6 48.8 3.729 4.275 116 17.8 3:01 (335, 60) June 12 20 34.12 7 54.9 3.609 4.252 123 17.7 2:59 (351, 63) |
|
C/2009 K5 ( McNaught )
No comments:
Post a Comment