Weekly Information about Bright Comets (2011 Oct. 29: South)

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Updated on October 30, 2011
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.
Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

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* C/2009 P1 ( Garradd )

Now it is 6.5 mag (Oct. 21, Salvador Aguirre). It keeps so bright as 6-8 mag for a long time from 2011 to 2012. In the Southern Hemisphere, it will be unobservable soon. In the Northern Hemisphere, it will be extremely low from late November to late December. But after that, it will be observable in excellent condition again. It will be observable again in 2012 spring also in the Southern Hemisphere, although it locates low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  17 38.66   18 43.4   1.989   1.728    60    6.6  19:58 (115,  3)  
Nov.  5  17 35.33   18 50.2   2.041   1.688    55    6.6  20:07 (110, -5)  

* C/2010 G2 ( Hill )

Now it is 10.0 mag (Oct. 27, Marco Goiato). It keeps 10 mag until November. It will start fading after December. But it keeps observable in excellent condition for a while in the Northern Hemisphere. It is appearing also in the Southern Hemisphere. After this, it keeps observable until 2012 spring when it fades down to 15-16 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   6 30.78   45  3.3   1.450   2.096   116   10.4   3:30 (186,  9)  
Nov.  5   6  3.65   42 13.7   1.359   2.125   128   10.5   3:10 (180, 13)  

* 41P/Tuttle-Giacobini-Kresak

It is not observable at all due to the bad condition in this apparition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  13 19.98   -4 38.4   1.993   1.067    15   11.5   3:30 (286,-14)  
Nov.  5  13 49.25   -7  2.3   1.983   1.054    14   11.2   3:20 (290,-15)  

* 45P/Honda-Mrkos-Pajdusakova

It passed very near by the earth, within 0.1 A.U., and brightened up to 8.0 mag in the southern sky (Aug. 14, Willian Souza). It appeared in the morning sky in the Northern Hemisphere. It brightened up to 6.6 mag in late September (Sept. 25, Juan Jose Gonzalez). Now it is fading, but still bright as 10.2 mag (Oct. 29, Todd Augustyniak). It keeps observable while fading gradually after this. In the Southern Hemisphere, it is not observable until winter when it becomes fainter than 16 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  11 57.47    2  9.5   1.352   0.810    36   11.3   3:30 (268, -1)  
Nov.  5  12 16.60    0 30.0   1.445   0.910    38   12.2   3:20 (270, -1)  

* 78P/Gehrels 2

Now it is very bright as 10.8 mag (Oct. 27, Marco Goiato). It will be observable in good condition at 11-12 mag in autumn and winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  23 35.98    0 57.7   1.244   2.103   139   11.9  21:06 (180, 54)  
Nov.  5  23 37.08    0 27.0   1.282   2.087   132   11.9  20:40 (180, 55)  

* C/2010 X1 ( Elenin )

It has brightened faster than expected, and reached up to 8.1 mag in mid August (Aug. 19, Michael Mattiazzo). However, the nucleus has been disintegrated, and it faded out and got diffuse very rapidly. The necleus has been already fainter than 22.5 mag and unable to be detected (Oct. 23, Jakub Cerny). But the remnant of the comet is still visible westwards from the predicted position, extremely large, diffuse and elongated as 40x5 arcmin. Juan Jose Gonzalez reported the total magnitude of the remnant as 10.2 mag on Oct. 21 visually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   6 16.80   30 54.8   0.284   1.166   121   12.1   3:30 (185, 24)  
Nov.  5   5 11.23   29 46.2   0.350   1.286   142   12.9   2:19 (180, 25)  

* 73P/Schwassmann-Wachmann 3

Now it is so bright as 12.3 mag (Oct. 19, Hidetaka Sato). The condition of this apparition is bad. In the Northern Hemisphere, it is only observable from December to February in the evening very low sky after the perihelion passage. In the Southern Hemisphere, it keeps observable for a long time, although it keeps locating extremely low. The component B was not detected, fainter than 20 mag, on May 14 (Hidetaka Sato).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  16 27.17  -25 43.5   1.600   0.959    34   12.2  19:58 ( 69, 15)  
Nov.  5  17  4.58  -27 46.3   1.595   0.984    35   12.3  20:07 ( 67, 16)  

* C/2011 Q4 ( SWAN )

New comet discovered in the spacecraft images. It was observed so bright as 9.4 mag (Sept. 22, Chris Wyatt). In the Southern Hemisphere, it must have located high and been observable in excellent condition from spring to summer. Now it is not observable. In the Northern Hemisphere, it will appear in the morning sky at 15 mag in late November, then it will be observable while fading gradually. In the Southern Hemisphere, further observations are very hard.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  14 24.67   -1 46.4   2.221   1.265    11   12.8  19:58 ( 70,-24)  
Nov.  5  14 26.25   -0  4.0   2.248   1.320    15   13.2   3:20 (290,-26)  

* C/2011 Q2 ( McNaught )

Now it is bright as 13.9 mag (Oct. 19, Hidetaka Sato). It will be unobservable in early November also in the Southern Hemisphere. It will brighten up to 11-12 mag in winter, however, it is not observable around the perihelion passage. In the Northern Hemisphere, it is not observable until 2012 summer, when it will be fainter than 15 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  16 18.33  -32  7.5   2.526   1.801    34   13.3  19:58 ( 62, 16)  
Nov.  5  16 38.39  -31  6.1   2.505   1.738    31   13.1  20:07 ( 61, 13)  

* 49P/Arend-Rigaux

It brightened rapidly and reached up to 12.9 mag (Oct. 8, Seiichi Yoshida). It keeps the current brightness until December. Then it starts fading, but it keeps observable in good condition until May when it becomes fainter than 18 mag. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   9 28.61    7 47.0   1.353   1.428    73   13.3   3:30 (240, 24)  
Nov.  5   9 49.08    7 39.0   1.321   1.436    75   13.2   3:20 (241, 24)  

* C/2009 F4 ( McNaught )

Now it is bright as 14.1 mag (Oct. 3, Hidetaka Sato). It keeps bright as 13-14 mag for a long time after this until 2013. It is not observable in the Northern Hemisphere, but it is observable in good condition in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  12 36.69  -80 17.2   5.770   5.475    67   13.5   3:30 (349, 33)  
Nov.  5  12 49.45  -81 27.1   5.782   5.471    66   13.5   3:20 (350, 33)  

* C/2011 A3 ( Gibbs )

Now it is 14.3 mag (Sept. 13, Artyom Novichonok and Vladimir Gerke). It was observed much brighter visually around 10-12 mag. It keeps the current brightness from 2011 summer to 2012 summer. But it is not observable around the perihelion. It is already too low to observe in the Southern Hemisphere. It will be unobservable also in the Northern Hemisphere in November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  16  4.09   -4 27.1   3.224   2.406    29   13.8  19:58 ( 83, -2)  
Nov.  5  16 18.59   -5 49.7   3.237   2.390    26   13.7  20:07 ( 79, -6)  

* 71P/Clark

It brightened up to 17.1 mag in late June (June 24, J. F. Hernandez). It will brighten up to 13 mag in winter. But the condition of this apparition is bad, and it will not be observable around the perihelion passage. It will appear in the morning sky at 14 mag in 2012 April in the Southern Hemisphere. It will not be observable until 2012 June in the Northern Hemisphere, when the comet will be 15.5 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  15 12.13  -17 53.2   2.570   1.634    15   14.0  19:58 ( 65, -4)  
Nov.  5  15 32.30  -19 33.7   2.564   1.616    13   13.9  20:07 ( 61, -6)  

* 29P/Schwassmann-Wachmann 1

Appearing in the morning sky. Now it is bright as 14.2 mag (Oct. 24, Jean-Francois Soulier).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  12  8.72   -7 39.7   7.097   6.262    30   14.2   3:30 (278,  2)  
Nov.  5  12 12.99   -8 13.7   7.034   6.262    36   14.2   3:20 (277,  5)  

* (596) Scheila

Big asteroid discovered in 1906. It suddenly showed the cometary activity on Dec. 11, probably due to an impact of a small object. It was very bright as 11.5 mag visually (Dec. 17, Juan Jose Gonzalez). It had a dust coma still on Jan. 9 (Joseph Brimacombe). Then it turned to be stellar at 13.8 mag (Apr. 5, Juan Jose Gonzalez). Now it is not observable.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  13 25.00    0 55.4   3.522   2.597    18   14.2   3:30 (282,-18)  
Nov.  5  13 36.55   -0 21.1   3.485   2.588    21   14.2   3:20 (282,-16)  

* C/2006 S3 ( LONEOS )

Now it is 14.3 mag and visible visually (Oct. 1, Jakub Cerny). It will be observable at 13-14 mag for a long time from 2011 to 2012. However, it will be unobservable temporarily from November to January.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  17 54.50  -12 28.0   5.809   5.291    54   14.2  19:58 ( 92, 25)  
Nov.  5  17 54.73  -12 44.9   5.897   5.279    47   14.3  20:07 ( 87, 18)  

* 213P/2009 B3 ( Van Ness )

First return of a new periodic comet which brightened up to 13 mag in a major outburst in 2005. In this apparition, it brightened up to 12 mag in 2011 summer and autumn. It will be fading after this, but it is still bright as 12.2 mag (Oct. 16, Uwe Pilz). It keeps observable in good condition until February when it fades out down to 17-18 mag. The fragment B is also observed at 20 mag. Another fragments C and D are also observed at 21-22 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  22 39.72    4  4.0   1.591   2.329   127   14.5  20:10 (180, 51)  
Nov.  5  22 42.68    4 10.6   1.679   2.349   121   14.8  20:07 (172, 50)  

* 21P/Giacobini-Zinner

Now it is 13.9 mag and visible visually (Oct. 21, Jakub Cerny). It will reach up to 10 mag from January to March, but it will be too low to observe. It will be getting lower in the evening sky. In the Northern Hemisphere, it keeps observable until December when it brightens up to 12 mag. In the Southern Hemisphere, it will be unobservable soon.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  16 59.95    0 42.4   2.294   1.725    44   14.9  19:58 ( 95,  7)  
Nov.  5  17 15.73   -0 11.6   2.264   1.661    41   14.5  20:07 ( 92,  3)  

* C/2010 S1 ( LINEAR )

Now it is visible visually at 13.8 mag (Oct. 21, Jakub Cerny). It is expected to be 13 mag and will be observable in good condition in 2013. In the Northern Hemisphere, it keeps observable for a long time after this. It is not observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  23 40.78   63 31.0   6.515   7.108   123   14.8  21:10 (180, -9)  
Nov.  5  23 30.39   62 31.4   6.498   7.082   122   14.8  20:32 (180, -8)  

* C/2010 M1 ( Gibbs )

It was expected to keep 14-15 mag for a long time from 2011 summer to 2012 summer. However, it is lost. It was observed only during two days in 2010 June. So the orbital elements are extremely uncertain. The condition is good in the Southern Hemisphere. But in the Northern Hemisphere, it is not observable until 2012 August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  16 18.02  -59 20.7   3.061   2.568    51   15.0  19:58 ( 35, 29)  
Nov.  5  16 30.40  -60 36.5   3.064   2.534    49   15.0  20:07 ( 33, 26)  

* 37P/Forbes

Now it is 16.6 mag (Oct. 12, Hidetaka Sato). It is already unobservable in the Northern Hemisphere. It will be unobservable soon also in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  15 56.92  -25 31.0   2.446   1.633    27   15.2  19:58 ( 65,  9)  
Nov.  5  16 19.23  -26  9.8   2.450   1.616    25   15.1  20:07 ( 63,  7)  

* C/2011 R1 ( McNaught )

Now it is 15.7 mag (Oct. 20, Catalina Sky Survey). It is expected to be observable at 13 mag for a long time from 2012 summer to 2013 summer. It will be observable in excellent condition in the Southern Hemisphere. But it is not observable at brightest time in the Northern Hemisphere. It keeps observable for a while at 16 mag while brightening gradually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   2 16.91  -28 54.4   3.608   4.396   137   15.7  23:46 (180, 84)  
Nov.  5   2  7.89  -30 18.4   3.593   4.337   133   15.6  23:09 (180, 85)  

* C/2011 M1 ( LINEAR )

Extremely diffuse and hardly detected by CCD images. The nucleus is already fainter than 18 mag (Oct. 15, Jean-Francois Soulier). The comet can be already disintegrated. However, Juan Jose Gonzalez reported it so bright as 9.5 mag visually on Sept. 25. In the Northern Hemisphere, it keeps locating higher than 20 degree from November to December. In the Southern Hemisphere, it will be observable in early November, then it will be getting higher rapidly.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  11 40.38   -1 38.2   1.879   1.272    39   15.7   3:30 (269,  4)  
Nov.  5  11 44.69   -6 15.1   1.889   1.356    43   15.9   3:20 (271, 10)  

* P/2010 JC81 ( WISE )

It was revealed to be a comet when appearing in the morning sky in early August. It has already passed the perihelion in April, and it will be fading after this. But it is still visible visually at 14.8 mag (Oct. 2, Jakub Cerny). In the Northern Hemisphere, it keeps observable in excellent condition for a long time until 2012 summer. It is not observable at all in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  10 56.42   47 42.9   2.768   2.683    74   15.7   3:30 (223,-16)  
Nov.  5  11  9.15   47 48.7   2.752   2.734    78   15.8   3:20 (222,-16)  

* 48P/Johnson

It brightened rapidly. Now it is bright and visible visually at 14.6 mag (Sept. 30, Sandor Szabo). It will be fading slowly after this. It keeps observable until winter when it fades out down to 17-18 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  20 54.77  -27 16.1   2.028   2.310    93   15.7  19:58 (105, 69)  
Nov.  5  21  4.69  -26 42.8   2.113   2.315    88   15.9  20:07 (100, 63)  

* C/2011 F1 ( LINEAR )

It is expected to be bright as 9 mag from 2012 to 2013. Now it is 15.8 mag (Oct. 22, Erik Bryssinck). It is already visible visually at 14.6 mag (Oct. 1, Jakub Cerny). In the Northern Hemisphere, although it becomes low temporarily in 2011 autumn, it keeps observable in good condition for a long time until 2012 autumn when the comet brightens up to 10 mag. In the Southern Hemisphere, it is hardly observble before the perihelion passage. But it becomes observable in good condition since 2013 after the perihelion passage.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  13 38.76   44 57.6   5.576   5.129    58   15.8   3:30 (238,-41)  
Nov.  5  13 47.42   44 32.0   5.473   5.068    61   15.7   3:20 (238,-39)  

* C/2011 S2

Bright new comet. Now it is 16.1 mag (Oct. 19, Hidetaka Sato). It keeps 16 mag from October to November, but it will be fainter than 18 mag in winter. In the Northern Hemisphere, it keeps locating the same altitude in the morning sky. In the Southern Hemisphere, it locates extremely low now, but it will be getting higher gradually. Juan Jose Gonzalez reported that it was visible as a 11.3-mag diffuse comet visually on Oct. 9. The orbital elements are similar to P/2006 T1 (Levy), but they seem to be different objects.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  11  1.17    2 31.0   1.463   1.116    49   15.8   3:30 (260, 10)  
Nov.  5  11 25.07   -1 54.9   1.479   1.125    49   15.9   3:20 (264, 11)  

* C/2011 L3 ( McNaught )

It was very bright and visible visually as 12.4 mag in July and early August (Aug. 2, Jakub Koukal). Now it is fading rapidly. It has already faded down to 17.0 mag (Oct. 11, Artyom Novichonok and Vladimir Gerke). In the Northern Hemisphere, it keeps observable until the end of 2011 when it becomes fainter than 18 mag. It will never be observable again in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  17 35.74   35  3.9   2.316   2.157    68   16.0  19:58 (128, -8)  
Nov.  5  17 39.66   35 35.4   2.392   2.196    66   16.2  20:07 (124,-13)  

* 65P/Gunn

It became bright as 12 mag in 2010. Now it is fading. It has already faded down to 17.1 mag (Oct. 26, S. Shurpakov).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   1 49.14    1 37.7   2.920   3.895   167   16.2  23:19 (180, 53)  
Nov.  5   1 44.30    1 25.3   2.964   3.913   160   16.3  22:46 (180, 54)  

* C/2008 FK75 ( Lemmon-Siding Spring )

Now it is 16.9 mag (Oct. 13, P. Dupouy). It will be fading very slowly after this. In the Northern Hemisphere, it keeps observable for a long time until 2012 spring when it fades down to 17-18 mag. It will not be observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  22 26.39   43 47.4   4.888   5.497   123   16.3  19:58 (180, 11)  
Nov.  5  22 27.65   42 29.2   4.960   5.528   120   16.4  20:07 (173, 12)  

* C/2010 B1 ( Cardinal )

It reached up to 14 mag in 2010 autumn and winter. Now it is fading. It has already faded down to 16.6 mag (Sept. 14, Hidetaka Sato). In the Southern Hemisphere, it keeps observable in good condition while fading gradually. In the Northern Hemisphere, it will never be observable again.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   5 59.73  -74 44.0   3.861   3.908    85   16.6   3:30 (  0, 50)  
Nov.  5   5 35.04  -76 59.7   3.929   3.951    84   16.6   2:41 (  0, 48)  

* C/2009 Y1 ( Catalina )

It was bright as 13.5 mag and visible visually still in 2011 summer. But it is fading now. It has already faded down to 16.2 mag (Oct. 16, P. Dupouy). It will be fainter than 18 mag in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  21 54.78  -33  8.1   3.430   3.786   103   16.7  19:58 (103, 83)  
Nov.  5  21 52.99  -33 42.4   3.600   3.836    96   16.9  20:07 ( 90, 75)  

* C/2010 FB87 ( WISE-Garradd )

Although it has passed the perihelion in last November, it is uxexpectedly bright as 16.5 mag still now (Oct. 25, C. Bell). It keeps observable in excellent condition until winter. It will keep 16-17 mag for a while after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   7 12.80    0 45.5   4.110   4.461   104   16.7   3:30 (211, 50)  
Nov.  5   7  8.65    1  9.5   4.044   4.510   111   16.8   3:20 (202, 52)  

* 130P/McNaught-Hughes

It brightened up to 14.0 mag and became visible visually in August (Aug. 1, Juan Jose Gonzalez). Now it is fading. It has already faded down to 16.5 mag (Oct. 15, F. Garcia).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  22 56.81  -18  6.8   1.603   2.298   122   16.8  20:27 (180, 73)  
Nov.  5  23  0.19  -17 15.0   1.693   2.318   117   17.0  20:07 (177, 72)  

* C/2008 S3 ( Boattini )

Now it is 17.0 mag (Oct. 16, Catalina Sky Survey). It keeps observable at 17 mag for a long time from 2011 to 2012.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  23 50.24   14 43.3   7.224   8.065   145   16.9  21:20 (180, 40)  
Nov.  5  23 45.70   14 10.0   7.303   8.070   138   16.9  20:48 (180, 41)  

* 164P/Christensen

Now it is 17.3 mag (Oct. 19, Hidetaka Sato). It tends to be brightest after the perihelion passage. In the Northern Hemisphere, it keeps observable at 17 mag in good condition from autumn to winter. In the Southern Hemisphere, it locates low and will be hard to observe.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  10 13.32   20 15.5   2.353   2.173    67   17.1   3:30 (238,  8)  
Nov.  5  10 24.73   20  5.2   2.312   2.212    71   17.1   3:20 (238,  9)  

* C/2005 L3 ( McNaught )

It brightened up to 13-14 mag and became visible visually from 2007 to 2009. Now it is fading. But it is still bright as 16.4 mag (Oct. 9, Artyom Novichonok and Vladimir Gerke). In the Northern Hemisphere, it keeps observable in excellent condition until early summer in 2012. In the Southern Hemisphere, it locates extremely low only.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  10 56.69   35 23.2  11.188  10.837    66   17.1   3:30 (233, -9)  
Nov.  5  10 57.26   35 31.1  11.121  10.873    73   17.1   3:20 (231, -6)  

* 253P/2011 R2 ( PanSTARRS )

Now it is 17.0 mag (Oct. 18, Toshiyuki Takahashi). It will be observable in good condition for a while. But it will be fainter than 18 mag in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  23 15.80  -10 25.4   1.260   2.049   130   17.2  20:46 (180, 65)  
Nov.  5  23 18.80  -10  9.7   1.315   2.045   124   17.3  20:22 (180, 65)  

* P/2011 N1 ( ASH )

Now it is 17.2 mag (Oct. 7, IAA-AI Atacama). It keeps 17-18 mag until early 2013. It keeps observable in good condition until early 2012 in the Southern Hemisphere, although it locates low in the Northern Hemisphere. In the Northern Hemisphere, it will be observable in good condition from 2012 autumn to early 2013.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   0 34.36  -45 25.2   2.688   3.267   117   17.3  22:04 (  0, 80)  
Nov.  5   0 30.37  -44 21.3   2.718   3.243   113   17.3  21:33 (  0, 81)  

* P/2006 T1 ( Levy )

First return of a new comet which brightened up to 9.5 mag in a major outburst in 2006. It will approach to the earth down to 0.2 A.U. in January, and will be observable in excellent condition. However, the brightness will be quite uncertain. The comet has not been recovered yet. It was fainter than 20 mag on Oct. 2 (Jean-Francois Soulier).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  22 38.91   43  5.6   0.590   1.421   125   18.5  20:09 (180, 12)  
Nov.  5  22 30.56   41 48.1   0.553   1.362   121   17.4  20:07 (174, 13)  

* (3200) Phaethon

Now it is 18.6 mag (Sept. 3, Jean-Francois Soulier). It keeps observable in good condition at 17-18 mag until March. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   4 27.56   40  8.6   1.420   2.271   139   17.7   2:02 (180, 15)  
Nov.  5   4 11.36   40  4.5   1.340   2.244   148   17.5   1:18 (180, 15)  

* 244P/2010 Q1 ( Scotti )

Now it is 17.8 mag (Oct. 22, C. Bell). It keeps observable at 18 mag for a long time until 2013.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   5 44.82   26  6.3   3.236   3.931   128   17.6   3:18 (180, 29)  
Nov.  5   5 43.45   26 10.2   3.158   3.929   135   17.5   2:49 (180, 29)  

* 2000 EJ37

Peculiar asteroid moving along a cometary orbit. Now it is 17.5 mag (Aug. 1, Siding Spring Survey)。It is observable at 17-18 mag in good condition from September to November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   2 45.21    6 22.5   1.873   2.855   169   17.6   0:19 (180, 49)  
Nov.  5   2 38.74    5 39.3   1.926   2.908   170   17.7  23:40 (180, 49)  

* 242P/2010 P3 ( Spahr )

Now it is 17.8 mag (Oct. 21, C. Bell). It will be observable in good condition at 18 mag from autumn to winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   3 21.06  -12 11.8   3.158   4.044   149   17.6   0:55 (180, 67)  
Nov.  5   3 17.55  -13  3.4   3.149   4.038   149   17.6   0:24 (180, 68)  

* 2008 YB3

Peculiar asteroid moving along a cometary orbit. Now it is 18.4 mag (Oct. 26, Hidetaka Sato). It keeps observable at 18 mag for a long time from 2008 to 2014.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29   8 16.27    7 23.2   6.493   6.576    90   17.7   3:30 (225, 36)  
Nov.  5   8 15.54    7 41.4   6.378   6.582    97   17.7   3:20 (220, 39)  

* 9P/Tempel 1

Although the condition is bad in this apparition, it brightened up to 12.8 mag in last winter (Dec. 24, Ken-ichi Kadota). Now it is fading, but it is still bright as 16.9 mag (Oct. 14, P. Dupouy). It can be observable at 17-18 mag for some more time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Oct. 29  23 28.62  -17 44.0   2.135   2.869   129   19.1  20:59 (180, 73)  
Nov.  5  23 27.48  -17 10.0   2.249   2.907   122   19.2  20:30 (180, 72)  

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