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North Yorkshire - Iridium Flares


Tyneside, UK
2014 Dec 23
Tuesday, Day 357

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Iridium Flares
Pick the Closest:















Astronomy in Yorkshire:


Very Much an "Identified Flying Object"

Occasionally something in the sky will catch your eye, like a slowly moving light that gets very bright and then fades away, all in the space of about five seconds. The chances are that you have spotted one of the sixty or so "Iridium" satellites in orbit.

iridium panelIridiums are fitted with a large, flat and highly polished panel behind behind each of their three aerials. They can occasionally produce glints that nearly rival the Full Moon in brightness.

Because of the very controlled way in which way the satellites orient themselves in space, Iridium 'flares' are highly predictable. Those in the know can wait for them and can be looking in the right direction when they occur.

The table tells you which direction to look and the maximum brightness (Visual Magnitude) to expect. The more negative the figure, the brighter it will be. For comparison, the brightest stars in the Sky are magnitude -1, Venus at its most brilliant is -4 and a Full Moon is -11.

Sometimes the flare will be a little brighter or dimmer than expected because of minor deviations in the satellite's orientation.


All Locations

One thing you can do is see how different the same flare appears from a location a few miles away. It might be dimmer, brighter, and it might happen a few seconds earlier or later as the satellite travels round its orbit. It takes nearly 15 seconds for a flare event to travel across Yorkshire.

Times are local UK so will show Summer Time when it is in force.

Date Location Iridium
Number
Time
GMT
Visual
Mag
Azimuth Elevation Reflector
December 22, MonYork 50 05:58:45
-1
158° (SSE)
15°
LH aerial
Sutton Bank 18 07:38:59
-3
59° (ENE)
39°
Middle aerial
Dalby Forest 18 07:39:01
-3
59° (ENE)
40°
Middle aerial
Scarborough 18 07:39:03
-2
60° (ENE)
41°
Middle aerial
York 18 07:39:05
-3
60° (ENE)
39°
Middle aerial
York 7 16:36:28
-5
74° (ENE)
68°
LH aerial
Malton 7 16:36:31
-2
74° (ENE)
70°
LH aerial
Sutton Bank 7 16:36:33
-7
75° (ENE)
68°
LH aerial
Dalby Forest 7 16:36:34
-1
72° (ENE)
70°
LH aerial
York 4 16:36:35
-1
75° (ENE)
71°
LH aerial
Whitby 7 16:36:37
-1
73° (ENE)
70°
LH aerial
Sutton Bank 4 16:36:40
-1
76° (ENE)
71°
LH aerial
December 23, TueWhitby 53 05:52:36
-5
159° (SSE)
14°
LH aerial
Bridlington 53 05:52:36
-2
160° (SSE)
15°
LH aerial
Scarborough 53 05:52:37
-3
159° (SSE)
15°
LH aerial
Dalby Forest 53 05:52:41
-6
159° (SSE)
14°
LH aerial
Malton 53 05:52:45
-7
159° (SSE)
14°
LH aerial
Sutton Bank 53 05:52:50
-2
158° (SSE)
13°
LH aerial
York 53 05:52:53
-3
158° (SSE)
13°
LH aerial
Scarborough 40 07:23:36
-1
57° (ENE)
35°
Middle aerial
Bridlington 40 07:23:41
-1
58° (ENE)
36°
Middle aerial
Whitby 39 07:32:51
-1
59° (ENE)
40°
Middle aerial
Sutton Bank 39 07:32:52
-5
58° (ENE)
38°
Middle aerial
Dalby Forest 39 07:32:54
-1
59° (ENE)
40°
Middle aerial
Scarborough 39 07:32:55
-1
59° (ENE)
40°
Middle aerial
Malton 39 07:32:56
-2
59° (ENE)
39°
Middle aerial
York 39 07:32:58
-6
59° (ENE)
38°
Middle aerial
York 37 16:30:23
-7
79° (E)
68°
LH aerial
Malton 37 16:30:26
-2
79° (E)
70°
LH aerial
Scarborough 37 16:30:29
-1
77° (ENE)
72°
LH aerial
Dalby Forest 37 16:30:28
-2
79° (E)
70°
LH aerial
Sutton Bank 37 16:30:29
-5
78° (ENE)
68°
LH aerial
Whitby 37 16:30:32
-1
78° (ENE)
71°
LH aerial
December 24, WedScarborough 54 05:46:44
-1
160° (SSE)
13°
LH aerial
Bridlington 54 05:46:44
-2
160° (SSE)
14°
LH aerial
Sutton Bank 12 05:55:27
-1
163° (SSE)
17°
LH aerial
Whitby 77 07:17:26
-6
56° (NE)
35°
Middle aerial
Sutton Bank 77 07:17:27
-1
56° (NE)
33°
Middle aerial
Scarborough 77 07:17:31
-8
57° (ENE)
35°
Middle aerial
Dalby Forest 77 07:17:30
-3
56° (NE)
35°
Middle aerial
Malton 77 07:17:32
-2
57° (ENE)
34°
Middle aerial
York 77 07:17:33
-1
56° (NE)
33°
Middle aerial
Bridlington 77 07:17:36
-6
57° (ENE)
36°
Middle aerial
York 34 16:24:13
-4
83° (E)
68°
LH aerial
Malton 34 16:24:16
-4
83° (E)
70°
LH aerial
Scarborough 34 16:24:18
-1
83° (E)
72°
LH aerial
Dalby Forest 34 16:24:19
-3
82° (E)
70°
LH aerial
Sutton Bank 34 16:24:18
-3
83° (E)
68°
LH aerial
Whitby 34 16:24:22
-2
83° (E)
71°
LH aerial
Bridlington 53 18:20:11
-7
33° (NNE)
43°
LH aerial
Scarborough 53 18:20:15
-4
33° (NNE)
42°
LH aerial
Malton 53 18:20:15
-1
34° (NE)
41°
LH aerial
Dalby Forest 53 18:20:17
-2
34° (NE)
41°
LH aerial
Whitby 53 18:20:20
-2
34° (NE)
42°
LH aerial
December 25, ThuScarborough 86 05:49:17
-1
166° (SSE)
18°
LH aerial
Whitby 86 05:49:17
-2
165° (SSE)
17°
LH aerial
Dalby Forest 86 05:49:21
-2
165° (SSE)
17°
LH aerial
Malton 86 05:49:25
-3
165° (SSE)
17°
LH aerial
Sutton Bank 86 05:49:30
-4
164° (SSE)
16°
LH aerial
York 86 05:49:33
-7
164° (SSE)
16°
LH aerial
Whitby 82 07:11:19
-7
55° (NE)
34°
Middle aerial
Sutton Bank 82 07:11:20
-1
55° (NE)
32°
Middle aerial
Dalby Forest 82 07:11:23
-4
56° (NE)
33°
Middle aerial
Scarborough 82 07:11:24
-6
56° (NE)
34°
Middle aerial
Malton 82 07:11:25
-3
56° (NE)
33°
Middle aerial
York 82 07:11:26
-1
55° (NE)
32°
Middle aerial
Bridlington 82 07:11:29
-4
56° (NE)
34°
Middle aerial
York 5 16:18:05
-1
87° (E)
67°
LH aerial
Bridlington 5 16:18:07
-2
87° (E)
71°
LH aerial
Malton 5 16:18:08
-4
87° (E)
69°
LH aerial
Scarborough 5 16:18:11
-3
86° (E)
70°
LH aerial
Sutton Bank 5 16:18:10
-1
87° (E)
67°
LH aerial
Dalby Forest 5 16:18:11
-6
86° (E)
69°
LH aerial
Whitby 5 16:18:14
-7
87° (E)
69°
LH aerial
Bridlington 54 18:14:01
-3
35° (NE)
44°
LH aerial
Scarborough 54 18:14:05
-2
35° (NE)
43°
LH aerial
Dalby Forest 54 18:14:07
-1
36° (NE)
42°
LH aerial
Whitby 54 18:14:10
-1
35° (NE)
42°
LH aerial
December 26, FriScarborough 52 05:43:29
-1
165° (SSE)
16°
LH aerial
Bridlington 52 05:43:29
-3
165° (SSE)
16°
LH aerial
Whitby 52 05:43:30
-1
164° (SSE)
15°
LH aerial
Bridlington 43 06:56:02
-1
53° (NE)
29°
Middle aerial
Whitby 18 07:05:10
-1
55° (NE)
33°
Middle aerial
Sutton Bank 18 07:05:10
-5
54° (NE)
32°
Middle aerial
Dalby Forest 18 07:05:13
-2
55° (NE)
33°
Middle aerial
Scarborough 18 07:05:15
-1
55° (NE)
34°
Middle aerial
Malton 18 07:05:15
-3
55° (NE)
33°
Middle aerial
York 18 07:05:16
-7
55° (NE)
32°
Middle aerial
Bridlington 18 07:05:20
-1
56° (NE)
34°
Middle aerial
York 8 16:11:59
-2
92° (E)
68°
LH aerial
Bridlington 8 16:12:01
-1
94° (E)
72°
LH aerial
Malton 8 16:12:02
-5
93° (E)
69°
LH aerial
Scarborough 8 16:12:05
-3
92° (E)
71°
LH aerial
Dalby Forest 8 16:12:05
-8
92° (E)
70°
LH aerial
Sutton Bank 8 16:12:05
-1
91° (E)
67°
LH aerial
Whitby 8 16:12:08
-4
93° (E)
70°
LH aerial
Bridlington 83 18:07:49
-3
37° (NE)
46°
LH aerial
Scarborough 83 18:07:54
-1
37° (NE)
45°
LH aerial
Dalby Forest 83 18:07:55
-1
37° (NE)
44°
LH aerial
Whitby 83 18:07:58
-1
37° (NE)
44°
LH aerial
December 27, SatWhitby 54 05:46:04
-1
170° (S)
19°
LH aerial
Dalby Forest 54 05:46:08
-1
170° (S)
19°
LH aerial
Malton 54 05:46:13
-2
169° (S)
19°
LH aerial
Sutton Bank 54 05:46:16
-7
168° (SSE)
18°
LH aerial
York 54 05:46:20
-4
168° (SSE)
18°
LH aerial
Whitby 40 06:49:43
-4
52° (NE)
29°
Middle aerial
Dalby Forest 40 06:49:46
-3
52° (NE)
28°
Middle aerial
Malton 40 06:49:47
-2
52° (NE)
28°
Middle aerial
Scarborough 40 06:49:48
-5
52° (NE)
29°
Middle aerial
Bridlington 40 06:49:53
-6
53° (NE)
29°
Middle aerial
Malton 39 06:59:07
-1
54° (NE)
32°
Middle aerial

The data for these predictions are provided by Simone Corbellini, a mathematician and satellite observer who lives in Italy. His own website covers satellite observing and flares in more depth. You can get there from the left hand menu.

Copyright © Robert Christy, all rights reserved
Reproduction in whole or in part without permission is prohibited