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

Ursa Astronomical Association

A fireball at night, as bright as a cresent moon - 12.9.2012 at 23.14 Helsinki, Pukinmäki Observation number 7822

Visibility IV / V

Esko Lyytinen, Ursa (Helsinki)

I got this final explosive "car" from my fireball camera, I didn't see it myself. Visual observation also appears to be the same:

http://www.taivaanvahti.fi/observations/show/7805

Also came to another fireball camera. The entry speed of the sporadic meteor was about 30 km / s and ignited with an 86-kilometer test and exploded at 75 km, which is high relative to the speed. Apparently there was quite weak material.

The exact time was 23.14.02.

The duration in the detection was 0.67 s.

EDIT: I still see an image observation.

http://www.taivaanvahti.fi/observations/show/7817

This is not the one I used for the second two station configurations.



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Additional information
  • Accuracy of the given observation time?
    • Maximum of 1 minutes 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 suddenly
  • 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 in magnitudes
    • -8
  • Brightness of the fireball
    • A fireball at night, as bright as a crescent moon
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