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That to me looks like an iridium satellite flare.
Well spotted!
So Iridium is a communications system that uses low orbit satellites for a communications system. I’ve used it in the Antarctic – it’s not too expensive.
The satellites have a funny shaped reflective antenna and under certain conditions they act as a mirror and reflect the sun down to earth.
Now the good bit…
The reflection is predictable, and so when I go to http://www.heavens-above.com/IridiumFlares.aspx?lat=51.5824&lng... and enter the location for Harringay (I did that for the link).
Go back to 29 November and you see
So only 1 km from Harringay Iridium 29 had a flare which was magnitude -8.5, and the time seems to match up with what you say too.
I know that -8.5 probably doesn’t mean much but trust me that is special. The magnitude scale works backwards and Wikipedia has good link on it.
The -8.5 means that the brightness of the flare was approaching the brightness of a full moon – but concentrated into a small area of only a few metres across. It’s no wonder it caught your eye!
The great thing about iridium flares is they are totally predictable. So using the heavens above www site you can easily get the date, time, direction and height of the very bright flares.
And then point them out to people
“If you look that way in about 10 seconds ……….. “
“WOW”
But surely only a total bore would do something like that.
Not me. Oh no…
(The link from AndA looks to me like a plane rather than flare as it has 2 trails not one)
I gave a talk about it once at the library
http://www.harringayonline.com/events/frozen-planet-at-stroud-green...
and wrote something
http://www.harringayonline.com/profiles/blogs/more-lonely-than-lond...
Work blog here http://mallemaroking.org/
Harringay is full of people who do things some would think weird, and its stuffed with academics too.
cheers, Mark
Stirling work, Mark. Thanks for clearing that up.
Hi Mark, thanks for your reply.
The iridium satellite flare is very interesting and the day and the time seem to match.
I just have a doubt: you wrote that from the link I added it looks like a plane as it has 2 trails. Actually the object in my picture has 2 trails as well and not one.
Oh yes! My eyesight is appalling!
could it be both wings? -8.5 is almost as bright as the flares can get so with clear sky could be able to see both?
pic from REDORBIT
Hi Mark,
Can you explain why the flare in the photo appears to have a distinct "head" (pointing down in the photo) and a long & more faded "tail" .. a little like a comet? If it was reflected light from a panel wouldn't the flare be more regular and distinct?
(having thought as I type ....) Maybe its due to the camera exposure - the satellite moved downwards as the shutter was open?
I can't I'm afraid - but my guess is that the satellite is moving, and orbiting so throw that in with the was the sensor in the camera works....
See a scientist at heart - just trying to figure out what could be likely!
cheers, Mark
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