Weekly Information about Bright Comets (2008 Dec. 6: North)
|
Japanese version Home page |
Updated on December 7, 2008 |
|||
|
||||
| Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere. |
|
|
It was expected to reach up to 7 mag and to be observable in good condition in winter. However, this comet has not been observed since 1986. It was not detected, fainter than 20 mag on Dec. 1 (Takaaki Oribe). It seems much fainter than expected. The condition of this apparition is good. It keeps observable for a long time until 2009 early summer both in the Northern Hemisphere and Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 22 3.48 -7 57.6 0.889 1.157 76 7.3 18:18 ( 26, 44) Dec. 13 22 28.70 -5 0.7 0.880 1.148 75 7.1 18:19 ( 29, 46) |
C/2007 N3 ( Lulin )
|
It brightened up to 8.5 mag on Oct. 25 (Marco Goiato). It is expected to reach to 4 mag in February. It is not observable now. It was about 9 mag in the SOHO images (Dec. 1, Michael Mattiazzo). It will appear in the morning sky again at 7 mag in late December. Then it keeps observable in the excellent condition long time around the highlight until spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 16 8.94 -20 2.7 2.291 1.333 10 7.6 5:23 (289, -9) Dec. 13 16 7.32 -19 59.4 2.195 1.292 17 7.4 5:28 (293, -2) |
C/2008 A1 ( McNaught )
|
It reached to 6.3 mag in September in the southern sky (Sept. 4, Marco Goiato). Now it is still bright as 8.8 mag (Nov. 26, Carlos Labordena). It keeps locating in the evening low sky until the end of 2008 when it fades out down to 10 mag. Then it turns to appear in the morning sky, and it keeps observable in the northern sky after that while fading gradually. 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. 6 18 1.25 10 58.2 2.185 1.527 37 9.0 18:18 ( 93, 15) Dec. 13 18 14.80 13 59.8 2.239 1.604 39 9.3 18:19 ( 98, 13) |
C/2006 W3 ( Christensen )
|
Brightening very rapidly, faster than expected. It is already so bright as 10.0 mag (Nov. 30, Maik Meyer). Strongly condensed and easy to see. It is expected to reach to 8 mag in 2009 summer. Because it moves in the northern sky, it keeps observable until it becomes brightest in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 21 56.04 54 55.6 3.419 3.730 100 10.2 18:18 (150, 65) Dec. 13 21 55.27 52 5.9 3.463 3.695 95 10.1 18:19 (139, 64) |
C/2006 OF2 ( Broughton )
|
Now it is bright as 10.8 mag (Dec. 2, Ken Harikae). It keeps observable in good conditioni as bright as 11 mag until January. Then, it keeps observable, visible visually, brighter than 14 mag for a long time until 2009 May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 6 35.81 60 35.5 1.774 2.590 137 10.8 1:37 (180, 64) Dec. 13 6 28.73 59 53.8 1.775 2.617 141 10.8 1:02 (180, 65) |
144P/Kushida
|
It has brightened much faster than expected. It was so faint as 20 mag in early September, and it was still faint as 16.1 mag on Nov. 1 (Ken-ichi Kadota), however, it became so bright and visible visually at 12.2 mag on Nov. 16 (Juan Jose Gonzalez). Now it is bright as 11.0 mag and looks very large (Nov. 29, Michael Jager). The CCD image detected its faint coma up to 10 arcmin. It will reach up to 10 mag in January. Then it keeps observable in good condition and visible visually for a long time until next spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 3 17.90 18 12.1 0.595 1.553 157 11.4 22:15 ( 0, 73) Dec. 13 3 17.85 17 20.6 0.590 1.525 150 11.0 21:48 ( 0, 72) |
P/2003 K2 ( Christensen )
|
|
Not recovered yet. It must be brightening very rapidly in the evening sky. However, it was not detected, fainter than 18 mag, on Nov. 22 (Maik Meyer). It is expected to reach up to 7.5 mag in January, but actually it may be much fainter than expected. It is not observable for about a month around the highlight. In the Northern Hemisphere, it keeps locating low in the evening sky until the highlight. But it turns to appear in the morning sky after February, then it keeps observable in good condition while fading gradually. In the Southern Hemisphere, it locates high except for January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 20 20.69 -27 26.8 1.139 0.866 47 12.3 18:18 ( 40, 15) Dec. 13 20 37.11 -26 13.7 1.049 0.768 44 11.4 18:19 ( 43, 14) |
6P/d'Arrest
|
It reached up to 8.5 mag in September (Sept. 24, Juan Jose Gonzalez). Diffuse object expanding a large coma. It is still bright as 11.0 mag (Dec. 1, Marco Goiato). In the Northern Hemisphere, it locates extremely low now. Although it will be getting higher slowly after this, it will be fading rapidly. However, it keeps observable in the evening sky until it becomes fainter than 18 mag early 2009. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 0 20.40 -24 29.2 1.400 1.837 99 11.9 19:19 ( 0, 31) Dec. 13 0 32.21 -22 21.1 1.505 1.885 96 12.5 19:03 ( 0, 33) |
C/2007 G1 ( LINEAR )
|
It brightened up to 11.5 mag in summer (Aug. 4, Marco Goiato). It keeps bright at 12 mag for a long time until 2009 spring. However, it is not observable in the Northern Hemisphere now. It will appear in the northern sky again in 2009 autumn, but it will be fainter than 15 mag and will keep locating very low after that. In the Southern Hemisphere, it keeps observable for a long time until it fades out, although it becomes low in autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 16 45.80 -60 3.3 3.367 2.655 37 12.4 5:23 (324,-32) Dec. 13 17 1.23 -62 3.9 3.353 2.662 39 12.4 5:28 (327,-31) |
C/2006 Q1 ( McNaught )
|
It reached to 10.9 mag in May (May 11, Marco Goiato). Now it is fading slowly. It has faded down to 12.0 mag on July 21 (Alexandre Amorim). Now it is appearing in the morning sky after a long blank. Now it is about 13 mag (Nov. 30, H. Sato). It keeps bright as 12-14 mag for a long time after this until 2009 summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 15 7.65 1 33.0 3.944 3.186 34 12.8 5:23 (280, 16) Dec. 13 15 17.64 2 15.3 3.919 3.221 39 12.8 5:28 (283, 21) |
C/2007 Q3 ( Siding Spring )
|
|
Already bright as 13.5 mag, and visible visually (Oct. 7, Alan Hale). It is extremely low in the Northern Hemisphere now, but observable in good condition in the Southern Hemisphere. It is expected to brighten up to 10 mag from late 2009 to early 2010. Because the comet moves in the southern sky for a long time, it keeps impossible or very hard to observe in the Northern Hemisphere until 2009 September. But after 2009 October, it is observable at 10 mag for a while in good condition. In the Southern Hemisphere, it keeps observable for a long time while brightening until 2009 June when it brightens to 11 mag. But it becomes unobservable around and after the brightest time. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 6 2.53 -54 10.1 3.657 3.978 101 13.1 1:03 ( 0, 1) Dec. 13 5 56.11 -54 17.6 3.594 3.922 102 13.0 0:29 ( 0, 1) |
19P/Borrelly
|
It reached up to 9.6 mag in summer (Aug. 2, Juan Jose Gonzalez). Now it is fading. It has already faded down to 12.5 mag (Nov. 22, Seiichi Yoshida). It keeps observable and fading in the morning sky after this. It keeps brighter than 14 mag and visible visually until the end of 2008. In the Southern Hemisphere, it keeps extremely low, or under the horizon, so it will not be observable. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 12 51.65 26 20.9 2.014 2.012 75 13.5 5:23 (275, 57) Dec. 13 13 3.89 26 36.3 1.996 2.063 79 13.6 5:28 (278, 61) |
29P/Schwassmann-Wachmann 1
|
An large outburst occured on Sept. 21, and it became so bright as 11.3 mag (Juan Antonio Henriquez Santana). The total brightness reached up to 10.3 mag in October (Oct. 11, Maik Meyer). It keeps bright as 11.0 mag still now (Dec. 2, Ken Harikae). Now the diameter is over 5 arcmin, looks very large and diffuse. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 8 18.72 22 59.9 5.377 6.085 132 13.5 3:19 ( 0, 78) Dec. 13 8 16.80 23 4.0 5.301 6.087 139 13.5 2:50 ( 0, 78) |
C/2008 T2 ( Cardinal )
|
Now it is 14.4 mag, and visible visually (Nov. 30, Alan Hale). It locates near by Polaris until December, and observable all night. It will brighten gradually after this, and reach to 9-10 mag in 2009 June. In the Northern Hemisphere, it keeps observable in good condition until May when it becomes brightest. But it will never be observable again after that. In the Southern Hemisphere, it is not observable until 2009 April. But after that, it will be observable while fading gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 1 43.62 89 12.9 2.368 2.898 113 14.0 20:30 (180, 36) Dec. 13 0 21.09 87 41.1 2.278 2.822 113 13.8 18:51 (180, 37) |
116P/Wild 4
|
Now it is 15.3 mag (Nov. 30, Yuji Ohshima). It will brighten rapidly after this. It will be observable at 12-13 mag for a long time from January to July in 2009. But actually, it seems to be fainter than this ephemeris. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 9 54.72 17 17.5 2.163 2.655 109 14.4 4:55 ( 0, 72) Dec. 13 9 58.70 17 6.5 2.055 2.630 115 14.2 4:31 ( 0, 72) |
67P/Churyumov-Gerasimenko
|
Now it is 14.6 mag (Nov. 19, Alan Hale), already visible visually. It will be brightening gradually after this, and reach to 12-13 mag in 2009 winter and spring. In the Northern Hemisphere, it keeps observable for a long time until 2009 May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 21 50.77 -18 42.3 1.651 1.599 69 14.6 18:18 ( 25, 32) Dec. 13 22 4.92 -16 57.1 1.661 1.551 66 14.4 18:19 ( 30, 33) |
7P/Pons-Winnecke
|
An outburst occured in late May and it brightened up to 14.6 mag (May 23, Gustavo Muler), but it faded down to the original brightness in late May. Then it had been reported so faint as 17 mag by CCD observations. However, it suddenly became so bright and visible visually after late August, and it reached up to 11.0 mag visually in September (Sept. 24, Juan Jose Gonzalez). However, it is fading now. It locates extremely low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 19 50.72 -32 49.2 2.109 1.508 40 14.7 18:18 ( 42, 7) Dec. 13 20 17.43 -32 21.1 2.178 1.553 39 14.9 18:19 ( 42, 7) |
C/2007 B2 ( Skiff )
|
It brightened up to 12.7 mag in spring (Apr. 12, Marco Goiato). However, it has already faded down to 14.9 mag (July 22, Mitsunori Tsumura). It will never be observable again in the Northern Hemisphere. It is not observable now also in the Southern Hemisphere, but it will appear again in the morning sky at 15 mag in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 16 9.71 -38 6.4 4.081 3.158 17 14.7 5:23 (304,-18) Dec. 13 16 24.02 -39 5.4 4.088 3.182 20 14.8 5:28 (307,-16) |
C/2005 L3 ( McNaught )
|
It had been bright and visible visually around 13 mag from spring to autumn in 2008. Now it locates extremely low, and hard to observe. But it will locate high again in winter, and will be visible visually at 14 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 15 12.87 19 5.7 6.680 6.066 48 14.8 5:23 (263, 25) Dec. 13 15 14.60 19 30.4 6.630 6.085 52 14.8 5:28 (267, 31) |
22P/Kopff
|
|
An outburst occured in 2008 February, and it brightened up to 16.0 mag (Feb. 28, Mt. Lemmon Survey) although it was predicted to be so faint as 19 mag. It had been reported brighter than predicted until early April. However, it returned to be so faint, fainter than 18 mag, after mid April. Although it has not beeb observable for a while, now it appeared in the morning sky again. Now it is 14.8 mag, brightening as expected (Dec. 2, Ken-ichi Kadota). It will be bright at 9-10 mag for a long time from spring to autumn in 2009. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 14 25.75 -10 41.7 2.962 2.249 36 15.1 5:23 (297, 17) Dec. 13 14 40.13 -11 47.3 2.869 2.208 40 14.8 5:28 (301, 19) |
C/2008 J1 ( Boattini )
|
Diffuse comet, but it brightened up to 9.8 mag on July 7 (Juan Jose Gonzalez). Now it is fading, but still visible visually at 14.1 mag (Nov. 22, Seiichi Yoshida). In the Northern Hemisphere, it keeps observable until 2009 spring when the comet becomes faint. It will move near by the Northern Pole from summer to autumn, and will be observable all night. It will be visible visually for some more time. 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. 6 1 52.43 74 14.6 1.833 2.511 123 14.8 20:51 (180, 51) Dec. 13 2 0.53 70 35.5 1.883 2.571 124 15.2 20:31 (180, 55) |
205P/2008 R6 ( Giacobini )
|
It had been lost for 112 years sincd 1896, but re-discovered by Koichi Itagaki and Hiroshi Kaneda on Sept. 10. It should be bright temporarily in outburst now. However, it became somewhat brighter in November than October. It still keeps bright as 12.6 mag (Nov. 22, Seiichi Yoshida). It keeps locating high in the evening sky for a while after this. It will keep visible visually for some more time. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 23 39.07 -11 33.4 1.362 1.768 96 15.1 18:38 ( 0, 44) Dec. 13 23 54.11 -10 34.2 1.457 1.803 93 15.5 18:25 ( 0, 45) |
C/2006 U6 ( Spacewatch )
|
Now it is 15.8 mag (Dec. 5, Ken-ichi Kadota). It should have reached up to 13.5 mag in summer in the southern sky, but it is already fading. In the Southern Hemisphere, it keeps observable for a long time after this. It is finally appearing in the morning sky also in the Northern Hemisphere soon. It keeps observable while the comet will be fading slowly after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 12 11.46 -29 14.8 3.504 3.170 62 15.2 5:23 (335, 21) Dec. 13 12 15.34 -29 1.0 3.453 3.214 67 15.3 5:28 (341, 23) |
68P/Klemola
|
Now it is 15.2 mag (Nov. 23, J. F. Hernandez). It will be getting lower in the evening sky, and it will be unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 19 14.05 -16 11.8 2.550 1.822 34 15.3 18:18 ( 60, 13) Dec. 13 19 33.31 -15 57.2 2.566 1.805 31 15.3 18:19 ( 61, 11) |
74P/Smirnova-Chernykh
|
Now it is 16.5 mag (Nov. 26, Ken-ichi Kadota). It will be observable at 15 mag in good condition in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 9 46.25 19 43.1 3.167 3.650 111 15.7 4:46 ( 0, 75) Dec. 13 9 47.58 19 53.8 3.069 3.645 118 15.7 4:20 ( 0, 75) |
C/2007 U1 ( LINEAR )
|
Now it is 14.2 mag and visible visually (Nov. 22, Seiichi Yoshida). But it starts fading in December, and will get lower in the evening sky in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 0 14.59 14 34.6 2.992 3.517 114 15.8 19:12 ( 0, 70) Dec. 13 0 6.29 13 42.2 3.148 3.539 105 16.0 18:36 ( 0, 69) |
P/2008 Q2 ( Ory )
|
It passed near by earth in October. It brightened more rapidly than expected, and then it continues brightening more. Now it is bright as 13.7 mag and visible visually (Nov. 24, Marco Goiato). However, it will fade out rapidly after this. It will be fainter than 18 mag in late December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 3 2.61 17 51.1 0.529 1.479 154 15.8 22:00 ( 0, 73) Dec. 13 3 8.24 18 47.0 0.577 1.507 148 16.3 21:38 ( 0, 74) |
59P/Kearns-Kwee
|
Now it is 16.2 mag (Oct. 27, Gustavo Muler). It will be observable at 16 mag in good condition from autumn to winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 1 57.99 27 9.6 1.616 2.458 140 15.9 20:55 ( 0, 82) Dec. 13 1 57.74 26 35.0 1.656 2.444 133 15.9 20:28 ( 0, 82) |
65P/Gunn
|
Now it is 16.0 mag (Nov. 21, Ken-ichi Kadota). It will brighten up to 12-13 mag in 2010 summer. It reaches to 14.5 mag in 2009 spring, and keeps observable in good condition until 2009 summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 12 11.67 9 40.7 3.571 3.460 75 16.0 5:23 (309, 55) Dec. 13 12 17.58 9 20.2 3.451 3.439 81 15.9 5:28 (319, 58) |
C/2008 P1 ( Garradd )
|
Now it is 15.5 mag (Oct. 18, Yasukazu Ikari). It will be too low in the evening sky in January. In 2009, it will be observable at 15 mag in good condition for a long time from summer to autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 22 52.59 -32 25.1 4.458 4.369 78 16.1 18:18 ( 6, 22) Dec. 13 22 53.68 -30 46.4 4.533 4.342 72 16.2 18:19 ( 13, 23) |
47P/Ashbrook-Jackson
|
Now it is 14.6 mag and visible visually (Aug. 6, Juan Jose Gonzalez). It locates somewhat low in the Northern Hemisphere, but it keeps observable around 15-16 mag until winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 21 43.41 -17 11.9 3.030 2.819 68 16.2 18:18 ( 28, 33) Dec. 13 21 52.04 -16 1.1 3.111 2.814 63 16.2 18:19 ( 34, 32) |
61P/Shajn-Schaldach
|
Now it is 13.9 mag and visible visually (Nov. 1, Seiichi Yoshida). It will be fading slowly after this. But it keeps observable in good condition until February when it becomes fainter than 18 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 3 7.39 7 15.4 1.307 2.220 150 16.2 22:04 ( 0, 62) Dec. 13 3 5.64 7 24.1 1.366 2.237 143 16.3 21:35 ( 0, 62) |
C/2008 R3 ( LINEAR )
|
Now it is 15.8 mag (Nov. 23, I. Almendros). It will be fading slowly after this, and will be fainter than 18 mag in March. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 20 39.61 25 45.9 1.948 1.915 73 16.3 18:18 ( 86, 55) Dec. 13 20 58.70 26 34.0 1.980 1.924 72 16.3 18:19 ( 89, 53) |
204P/2008 R5 ( LINEAR-NEAT )
|
|
At the discovery in 2001, it became much brighter after the perihelion passage. In this apparition, although it was so faint as 20 mag in early September, it has already brightened rapidly up to 17.9 mag (Nov. 23, D. T. Durig, M. H. McManus). It will reach up to 16 mag in January, and will be observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 8 34.01 17 29.6 1.175 1.940 127 16.8 3:34 ( 0, 72) Dec. 13 8 37.74 17 50.2 1.123 1.940 134 16.6 3:10 ( 0, 73) |
207P/2008 T5 ( NEAT )
|
It recovered as bright as expected, 16.4 mag on Oct. 15 (Ken-ichi Kadota). It is already fading now. It keeps observable in the morning sky until January when it will be fainter than 18 mag. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 13 8.26 -14 3.6 1.276 1.047 53 16.7 5:23 (314, 27) Dec. 13 13 31.32 -15 33.2 1.317 1.096 54 17.0 5:28 (317, 27) |
51P/Harrington
|
It was visible visually at 14.0 mag in autumn (Sept. 7, Juan Jose Gonzalez). Now it is fading, but it keeps observable in good condition until it fades out in winter. Now it is 15.0 mag (Nov. 1, Ken-ichi Kadota), still bright unexpectedly. Maybe a small outburst occured. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 4 15.35 18 49.4 1.326 2.304 170 16.9 23:12 ( 0, 74) Dec. 13 4 9.42 18 57.5 1.386 2.344 162 17.1 22:39 ( 0, 74) |
P/2008 L2 ( Hill )
|
It brightened rapidly, and reached to the maximum after the perihelion passage. It was visible visually at 14.8 mag on Sept. 29 (Juan Jose Gonzalez). Now it is fading. It will be fainter than 18 mag in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 1 1.02 7 43.5 1.832 2.507 122 16.9 19:59 ( 0, 63) Dec. 13 1 5.95 6 52.7 1.932 2.531 116 17.1 19:36 ( 0, 62) |
P/2008 QP20 ( LINEAR-Hill )
|
Now it is 16.4 mag (Nov. 2, L. Montoro). It brightened rapidly and became brighter than expected. However, it will start fading after December, and will be fainter than 18 mag in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 1 39.16 26 38.7 0.900 1.751 136 17.0 20:37 ( 0, 82) Dec. 13 1 45.48 26 22.5 0.952 1.763 131 17.1 20:16 ( 0, 81) |
C/2006 S3 ( LONEOS )
|
|
Now it is 17.4 mag (Sept. 9, Ken-ichi Kadota). It will brighten up to 12 mag in 2012. It is faint still in 2008, but observable at 17 mag in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 22 36.65 2 59.7 10.005 10.016 87 17.0 18:18 ( 20, 56) Dec. 13 22 36.20 2 50.4 10.090 9.978 80 17.0 18:19 ( 32, 54) |
77P/Longmore
|
|
Now it is 17.6 mag (Nov. 23, Catalina Sky Survey). It will be observable at 15 mag in good condition in 2009 spring. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 12 5.66 18 29.6 2.671 2.696 80 17.2 5:23 (300, 62) Dec. 13 12 13.27 17 45.0 2.562 2.674 85 17.1 5:28 (310, 66) |
2001 TX16
|
|
Peculiar asteroid moving along a cometary orbit. It will be observable around 17 mag in good condition for a long time until May. It will fade out very rapidly after May. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 12 31.16 5 5.4 1.528 1.495 69 17.4 5:23 (308, 48) Dec. 13 12 48.86 3 34.2 1.505 1.516 71 17.4 5:28 (314, 49) |
188P/2007 J7 ( LINEAR-Mueller )
|
It was observed as bright as 14-15 mag in 2007 autumn. Now it is 17.8 mag (Oct. 26, Catalina Sky Survey). It keeps observable in good condition for a while. It will be fainter than 18 mag in Feburary. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 8 24.16 32 26.8 2.687 3.428 132 17.5 3:25 ( 0, 87) Dec. 13 8 21.37 32 48.7 2.646 3.454 139 17.5 2:54 ( 0, 88) |
44P/Reinmuth 2
|
It was observed at 16.5-17 mag in 2007 autumn. Now it is 17.3 mag (July 2, J. F. Hernandez). It will be fading after this, and will be fainter than 18 mag at the end of 2008. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 4 36.37 27 6.0 1.971 2.953 174 17.5 23:33 ( 0, 82) Dec. 13 4 30.16 26 39.7 2.014 2.983 167 17.6 22:59 ( 0, 82) |
200P/2008 L1 ( Larsen )
|
Although it was extremely faint as 20 mag in June, it brightened much faster than expected and reached up to 17.1 mag (Oct. 30, P. C. Sherrod). However, it will fade out rapidly after this, and will be fainter than 18 mag in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 0 39.60 11 26.3 2.725 3.320 119 17.6 19:37 ( 0, 66) Dec. 13 0 42.01 11 8.7 2.821 3.327 112 17.6 19:12 ( 0, 66) |
(3200) Phaethon
|
Origin of Geminids meteor shower. It is observable in good condition at 17.5 mag from November to December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 2 10.21 33 3.7 1.438 2.304 143 17.7 21:07 ( 0, 88) Dec. 13 1 58.69 30 57.6 1.480 2.281 134 17.9 20:28 ( 0, 86) |
P/1999 XN120 ( Catalina )
|
|
Now it should be brightest. But it has not been recovered yet. It was observed only around the perihelion at the discovery in 1999. If it was bright temporarily in outburst, it can be much fainter than this ephemeris in this apparition. Josef Mueller reported it was 19.2 mag on Dec. 16, 2007, but it was not confirmed. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 6 37.00 24 52.4 2.383 3.306 155 17.8 1:38 ( 0, 80) Dec. 13 6 32.40 24 48.6 2.350 3.307 163 17.7 1:06 ( 0, 80) |
C/2006 K1 ( McNaught )
|
|
It reached up to 16 mag last winter. Now it is 17.7 mag (Nov. 19, Ken-ichi Kadota). It will be fainter than 18 mag in late December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 4 34.93 19 37.6 4.988 5.971 175 17.8 23:32 ( 0, 75) Dec. 13 4 30.52 20 2.3 5.041 6.007 167 17.8 23:00 ( 0, 75) |
P/2008 T4 ( Hill )
|
Now it is 17.5 mag (Nov. 5, Ken-ichi Kadota). It will be fainter than 18 mag in late December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 1 25.49 8 17.9 1.778 2.515 128 17.8 20:23 ( 0, 63) Dec. 13 1 26.77 8 47.0 1.848 2.513 122 17.8 19:57 ( 0, 64) |
33P/Daniel
|
Now it is 17.5-18.0 mag (Nov. 9, Michael Jager). It keeps observable at 18 mag in good condition until February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 11 16.21 30 36.6 2.109 2.422 96 17.9 5:23 (288, 78) Dec. 13 11 24.62 31 10.8 2.056 2.446 101 17.9 5:28 (301, 83) |
17P/Holmes
|
Great outburst occured in 2007 October, and it bacame a naked eye comet of 2 mag. It kept so bright as 5.5 mag still in 2008 spring (Apr. 30, Carlos Labordena), but it was extremely faint and difficult to see. The size was so large, the diameter was larger than 60 arcmin. It will become observable in good condition in this autumn and winter again. The extremely faint large diffuse glow may be detected with a best sky condition, around 5-6 mag with a diameter of 1 or 2 degrees. Mitsunori Tsumura detected a possible glow of Comet Holmes on Nov. 4. Current brightness of the central core is 17.8 mag (Oct. 31, Ken-ichi Kadota), much brighter than pre-outburst brightness still now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 9 20.86 25 29.3 3.506 4.075 118 18.4 4:21 ( 0, 80) Dec. 13 9 19.08 25 36.7 3.437 4.099 126 18.4 3:52 ( 0, 81) |
173P/2005 T1 ( Mueller 5 )
|
It was observed bright at 16.5-17 mag from late 2006 to early 2007. However, it is fading after that, although it is getting closer to the sun. It was so faint as 19.4 mag around the perihelion passage in 2008 spring (Mar. 10, Mitsunori Tsumura). This comet was observed so faint around the perihelion passage in the previous apparition at the discovery. It faded out before the perihelion passage again in this apparition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 11 39.03 17 8.8 4.256 4.301 85 21.6 5:23 (312, 65) Dec. 13 11 43.13 17 15.0 4.158 4.307 92 21.6 5:28 (326, 69) |
C/2007 K3 ( Siding Spring )
|
It was predicted to be so bright as 14 mag from spring to summer in 2008. But actually, it was extremely faint as 19.5 mag (Aug. 4, Gustavo Muler). Although it locates in good condition, it will be hard to observe. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Dec. 6 22 40.14 9 54.5 3.143 3.315 91 21.6 18:18 ( 22, 63) Dec. 13 22 47.08 10 0.7 3.294 3.372 86 21.8 18:19 ( 33, 61) |