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Originally posted by gortex
reply to post by fockewulf190
Its caused by Sunlight reflecting off the reflective surfaces on satellites mate .
Satellite flare
Originally posted by fockewulf190
The only question that still nags at me regards the time of the incident. At 01:25 AM CET, are iridium flares still possible to visualize? According to the diagram posted, my sighting happened during the middle of the night and not within the range of darkness near either the twilight or pre-dawn margins of visualization.
> I'm not aware of anything "special" about the month of May in terms of
> watching satellites. Many low earth orbit (LEO) satellites can be seen
> both morning and evening, every day of the year, in the middle latitudes.
> However, the late spring to early autumn months do afford longer periods
> after twilight for viewing satellites, compared to the winter months,
> with the maximum viewing period occurring at summer solstice. Perhaps
> this is what the Old Farmer's Almanac is referring to.
> This seasonal effect, caused by the tilt of the Earth's axis of rotation,
> is due to the rate at which the Earth's shadow climbs into the sky after
> sunset. As long as satellites remain outside the Earth's shadow, they
> are illuminated by sunlight and can reflect that sunlight back to your
> eyes and thus be visible to you. We often think of this in terms of the
> "shadow height", how high the shadow extends above your location, versus
> the satellite's height above you in its orbit. If a satellite is "above"
> shadow height, it can be visible. If the satellite is "below" shadow
> height, it is being eclipsed by the Earth and cannot be visible.
Originally posted by fockewulf190
And, not to be a stickler but, there was almost no movement of the object at all until the very end. I just want to know if that is possible with an iridium flare or not.
To the naked-eye they appear as a momentary flash, similar to the appearance of a satellite tumbling in orbit. On photographs, however, they often occur as new stars in familiar constellations. So if you think you've accidentally discovered a supernova, check the sky again - it was probably a point-source meteor!
Disk and point-source meteors are due either to a meteor heading directly towards the observer, or because the meteor is below naked-eye visibility for most of its flight but suddenly flares towards the end, thus becoming visible. They are probably more common than most people realize but their small angular size makes them difficult to observe.