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Ursa Astronomical Association

A fireball at night, brigter than the venus - 19.1.2017 at 18.00 Helsinki 72 Observation number 60257

Visibility III / V

Esko Lyytinen, Ursa (Helsinki)

I got a fireball camera, I didn’t see myself.

Has been linked to the observation of the Kyyjärvi spring chamber. Came from about 30 degrees with a steepness, just under 10 degrees.

The entry speed was 44 km / s, which means it was fast and burned out.

The flight altitude was about 100 -> 80 km.

The (apparent) radiant in the sky was (RA, Dec) 168, +33, i.e. it was a sporadic meteor.

The camera window was partly in frost (middle area), but the fireball flew in a frost-free spot.

EDIT: It turned out to be apparently a meteor from the IAU working list flock Xi Ursae Majoris (XUM).

To fix, the right loft is the January Xi Ursae Majorids (XUM yes), which is an "established shower."

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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?
    • 3 seconds
  • How the flight of the fireball ended?
    • The fireball faded away
  • In which direction the fireball disappeared out of sight?
    • Northwest
  • In which altitude the bolide disappeared from your sight?
    • About 1/3 from the horizon towards the zenith
  • Brightness of the fireball
    • A fireball at night, brighter than the Venus
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