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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 08.07 Sastamala Observation number 69382

Visibility IV / V

Not visible

The ball of fire / light fell towards the horizon, eventually disappearing from view. The ball was followed by a vane that was not only bright, but also rippled with greenish tones of light (similar to the northern lights). However, this color clearly followed the ball, disappearing with the ball. I thought the fireball was pretty big. Clearly noticeable and rapidly advancing, appeared as if from scratch. The direction of the air was probably northwest.



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Additional information
  • Accuracy of the given observation time?
    • 5 min difference possible
  • How long time did you see the fireball fly in the sky?
    • 3 seconds
  • How the flight of the fireball ended?
    • The fireball disappeared behind an obstacle (trees, buildings or clouds)
  • In which altitude the bolide disappeared from your sight?
    • Very low near the horizon
  • Brightness of the fireball
    • A fireball in a twilight sky
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