2013-10-05

Comet ISON Viewing in November and December

Below is a chart for viewing Comet ISON during November and December, 2013.  My estimates of the magnitude, or brightness, of the comet is more conservative than other sources - here's hoping I'm the pessimist who is proven wrong by others.



DATE
Estimated MAGNITUDE
ISON rises
DEGREES from Sun
Moon
Notes
November 1, Friday
7-9
4 hours, 9 minutes before Sun
85 WNW
2 days before New Moon 3% illumination in  morning sky
Comet is 1.6 degrees west of Sigma Leonis, a 4 magnitude star
November 2, Saturday
7-9
4 hours 7 minutes
51 WNW
1 day before New Moon, 2 % illumination in morning sky
Comet is less than 1 degree from Sigma Leonis.
November 3 Sunday
7-9
4 hours 4 minutes
51 WNW
New Moon
- if anyone has an extra ticket to Africa, let me know.  The annular-total eclipse will be visible there.  So how cool will this be to see the comet during the eclipse?
November 4 Monday
7-9
4 hours 1 minute
50 WNW
1 day past New Moon, 1 percent illumination

November 5 Tuesday
7-8
3 hours 58 minutes
50 WNW
2 days past New Moon

November 6 Wednesday
6-8
3 hours 53 minutes
49 WNW
3 days past New Moon

November 7 Thursday
6-8
3 hours 49 minutes
48 WNW
3 days before First Quarter, moon is in evening sky and is not relevant
Comet is 2 degrees SE of Beta Virginis (also called Zavijava), a 3.6 magnitude star.
November 8 Friday
6-8
3 hours 44 minutes
47 WNW
moon is in evening sky and is not relevant

November 9 Saturday
6-8
3 hours 39 minutes
46 WNW
moon is in evening sky and is not relevant
Deep sky photo op – close encounters with galaxies NGC 4044 and NGC 4030
November 10 Sunday
6-8
3 hours 33 minutes
45 WNW
moon is in evening sky and is not relevant

November 11 Monday
6-8
3 hours 27 minutes
43 WNW
moon is in evening sky and is not relevant

November 12 Tuesday
6-7
3 hours 20 minutes
42 WNW
moon is in evening sky and is not relevant

November 13 Wednesday
6-7
3 hours 13 minutes
41 WNW
moon is in evening sky and is not relevant
Less than 1.5 degrees from galaxy NGC 4546 and less than 1 degree with NGC 4593
November 14 Thursday
6-7
3 hours 5 minutes
39 WNW
moon is in evening sky and is not relevant

November 15 Friday
6
2 hours 56 minutes
37 WNW
2 days before Full Moon, 95% illumination, visible in morning sky
Moon is the enemy of viewing comet tonight!
November 16 Saturday
6
2 hours 47 minutes
35 WNW
1 day before Full Moon, 99% illumination, morning sky

November 17 Sunday
5-6
2 hours 37 minutes
33 WEST
100 % illumination with the Full Moon visible throughout the evening sky
SHOULD BE EASY TO FIND at about 5am, EST.  About 2 degrees WNW of Spica, a first magnitude star, also known as Alpha Virginis. 
 November 18 Monday
5-6
2 hours 26 minutes
31 WEST
1 day past Full Moon, 99% illumination in morning sky

November 19 Tuesday
5-6
2 hours 15 minutes
29 WEST
2 days past Full Moon, 97% illumination in morning sky

November 20 Wednesday
4-6
2 hours 3 minutes
27 WEST
3 days past Full Moon, 93% illumination in morning sky

November 21 Thursday
4-6
1 hour 50 minutes
24 WEST
4 days past Full Moon, 87% illumination in morning sky
This is a good day to go to the beach and look over the Atlantic.  Comet ISON and Comet 2P/Encke will be about 5 degrees apart (that is about the diameter of three fingers held at arm’s length)
November 22 Friday
4-5
1 hour 37 minutes
22 WEST
3 days before Last Quarter, 80% illumination in morning sky

November 23 Saturday
3-5
1 hour 23 minutes
19 WEST
2 days before Last Quarter, 72% illumination in morning sky
Another day to head for the beach and look across the Atlantic in the predawn hour.  A pair of binoculars with a 7 degree field of view will show Comet ISON, Comet 2p/Encke, Alpha Librae, and the planets Mercury and Saturn.
November 24 Sunday
3-5
1 hour 9 minutes
16 WEST
1 day before Last Quarter, 63% illumination  in morning sky
You will see Comet ISON in the morning twilight.  Only the coma will be visible, the tail being lost in the sunlight.  The coma will form a triangle with Mercury and Saturn.
November 25 Monday
2-3
54 minutes
13 WEST
Last Quarter 54% illumination in morning sky
At this point, and for a few days, one would be very lucky to see ISON.
November 26 Tuesday
1-2
39 minutes
10 WEST
1 day past Last Quarter, 44% illumination in morning sky

November 27 Wednesday
1-2
22 minutes
7 WEST
2 days past Last Quarter, 34% illumination in morning sky
Comet ISON is NOT visible at all this morning.
November 28 Thursday
-8 TO 1
2 minutes before the sun!
3 degrees WEST !!!
3 days past Last Quarter, 25% illumination in morning sky
At 2:40 pm EST, the Comet ISON reaches perihelion.  This means it is at its closest to the sun.  Some believe there is a chance that the comet will be visible.  Slim chance.
November 29 Friday
-2 to 1
10 minutes before the sun
3 degrees NORTH
3 days before New Moon, 16% illumination in morning sky
Comet is not visible.
November 30 Saturday
0-1
26 minutes before the sun
6 NORTH
2 days before New Moon, 9% illumination morning sky

December 1 Sunday
1-2
41 minutes
9 NNW
New Moon

December 2 Monday
2-3
51 minutes
11 NNW
1 day past New Moon

December 3 Tuesday
3-4
1 hour 3 minutes
14 NNW
2 days past New Moon
The comet will rise an hour before sunrise, and this may be the best viewing since perihelion.
December 4 Wednesday
3-4
1 hour 14 minutes
16 NNW
Moon is in evening sky

December 5 Thursday
3-4
1 hour 25 minutes
18 NNW
Moon is in evening sky

December 6 Friday
3-4
1 hour 36 minutes
21 NNW
Moon is in evening sky

December 7 Saturday
3-4
1 hour 46 minutes
23 NNW
Moon is in evening sky

December 8 Sunday
3-5
1 hour 57 minutes
25 NNW
Moon is in evening sky

December 9 Monday
4-5
2 hours 8 minutes
28 NNW
Moon is in evening sky
The comet is now rising 2 hours before sunrise, and should be easier to spot.
December 10 Tuesday
4-5
2 hours 19 minutes
30 NNW
Moon is in evening sky

December 11 Wednesday
4-5
2 hours 30 minutes
33 NNW
Moon is in evening sky

December 12 Thursday
4-5
2 hours 41 minutes
35 NNW
Moon is in evening sky

December 13 Friday
4-5
2 hours 52 minutes
38 NNW
Moon is in evening sky

December 14 Saturday
4-5
3 hours 7 minutes
40 NNW
Moon is in evening sky

December 15 Sunday
4.5 to 5
3 hours 19 minutes
43 NNW
Moon is in evening sky

December 16 Monday
5
3 hours 32 minutes
46 NNW
Moon is in evening sky

December 17 Tuesday
5
3 hours 42 minutes
49 NNW
Full Moon, 100% illumination all night
The moon will interfere from now until Christmas.
December 18 Wednesday
5-6
3 hours 56 minutes
52 NNW
1 day past Full Moon, 99% illumination in morning sky

December 19 Thursday
5-6
4 hours 11 minutes
55 NNW
2 days past Full Moon, 96% illumination morning sky

December 20  Friday
5-6
4 hours 27 minutes
58 NNW
3 days past Full Moon, 92% illumination, morning sky

December 21 Saturday
5-6
4 hours 45 minutes
61 NNW
4 days past Full Moon, 86% illumination, morning sky

December 22  Sunday
5-6
5 hours 4 minutes
65 NNW
3 days before Last Quarter, 79% illumination, morning sky

December 23  Monday
5-6
5 hours 27 minutes
68 NNW
2 days before Last Quarter 71% illumination in morning sky

December 24  Tuesday
5-7
5 hours 54 minutes
72 NNW
1 day before Last Quarter, 62% illumination in morning sky

December 25 Wednesday
5-7
6 hours 28 minutes
75 NNW
Last Quarter, 53% illumination in morning sky

December 26  Thursday
5-7
7 hours 19 minutes
78 NNW
1 day past Last Quarter, 42% illumination in morning sky

December 27 Friday
5-7
always in nighttime sky
82 NNW
2 days past Last Quarter, 31% illumination in morning sky

December 28 Saturday
5-7
always in nighttime sky
85 NNW
3 days past Last Quarter, 22% illumination in morning sky

December 29 Sunday
5-7
always in nighttime sky
88 NNW
3 days before New Moon, 13% illumination in morning sky

December 30 Monday
6-7
always in nighttime sky
91 NNW
2 days before New Moon

December 31 Tuesday
6-7
always in nighttime sky
94 NNW
New Moon
The comet will be 19 degrees from the North Star. 




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