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Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

A fireball in a twilight sky - 9.1.2018 at 08.09 Tampere Observation number 69359

Visibility IV / V


A green flash coming at a steep angle towards the ground, which was clearly brighter than the street lights. I saw the flash for less than a second, but I didn’t see the extinction because of the bridge in front.

If the cars driving north on the Hervanta Highway had dashboard cameras on, then you might find footage of the flash.



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Additional information
  • Accuracy of the given observation time?
    • 2 min difference possible
  • How long time did you see the fireball fly in the sky?
    • Less than a second
  • How the flight of the fireball ended?
    • The fireball disappeared behind an obstacle (trees, buildings or clouds)
  • In which direction the fireball disappeared out of sight?
    • North
  • In which altitude the bolide disappeared from your sight?
    • About 1/3 from the horizon towards the zenith
  • Brightness of the fireball
    • A fireball in a twilight sky
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