Solved: Portsmouth UK, "Alien Flight Path" UFO Contrail [Private Jet + Perspective]

Mick West

Administrator
Staff member




A supposedly unusual contrail turns out to just be a business jet making a slight course correction. This seems much more dramatic than it actually was, because of the forced perspective.

http://www.express.co.uk/news/weird/514401/Second-Portsmouth-UFO-Sighting-Contrail-Alien-Flight-Path

Looks like a normal flight that was vectored (directed by air traffic control) away from its course for normal traffic avoidance

UK is on BST right now, so 7:20AM is 06:20 UTC. The photo was taken Monday Sept 22, 2014

UPDATE: Solved! See the following posts.
 
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Trailspotter

Senior Member
I think that it was this private jet:
Screen shot 2014-09-23 at 19.55.49.png

The flight was from Guernsey (EGJB) to Copenhagen (EKCH) or Malmö (ESMS).

A quick photo fit of the above flight route on Google Earth:
Portsmouth contrail.jpg
 
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Pete Tar

Senior Member
As far as the 'swerve' manoeuvre goes, how long would it take over that distance? Does it represent several seconds, or several minutes?
 

Mick West

Administrator
Staff member
Very good, and the difference between the trail and the track can easily be accounted for by wind. I'd say this one is solved.
 

Trailblazer

Moderator
Staff member
I just logged on to try and track this one down and see I have missed the boat (or the plane!)

It amazes me that nobody in a newspaper office anywhere thought to fire up FR24 to identify this.

I suppose having a "mystery" is more of a story than having facts. Depressing but true.
 
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Trailblazer

Moderator
Staff member
It is a good illustration of how perspective can make a gentle turn look much sharper. Over in the "photos of planes and contrails" thread I posted another example a few weeks ago:

upload_2014-9-24_10-18-42.png

That looks like quite a sharp dog-leg but was actually a rather gentle turn:



(Photo was taken from just off the top of that screenshot - you can see the edge of the blue location circle on the word "Fleet")
 

derrick06

Active Member
I just don't get how people have to assume that just because its a turning contrails its "UFO Sourced." It cant just be a contrail from an aircraft? Jeez.... When I was on an aircraft carrier watching a flight demonstration of jets I watched their contrails practically make figure 8's! Its not unusual for them to turn with the craft. Good article!
 

Trailblazer

Moderator
Staff member
Another example I took earlier today showing how a very minor turn can appear like a sharp curve from the right perspective:

image.jpg

It's a bit hidden in the clouds but this "sharp turn" was produced by this plane: the gentle course correction just before crossing the south coast.

image.jpg
 

Mick West

Administrator
Staff member
Another example I took earlier today showing how a very minor turn can appear like a sharp curve from the right perspective:

View attachment 9444

It's a bit hidden in the clouds but this "sharp turn" was produced by this plane: the gentle course correction just before crossing the south coast.

View attachment 9445
Printed it out, put it on the ground:


Viewed from an angle a long distance away:


Looks like a "right angle" turn:
 
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