(meteorobs) Fire ball in Brazil

[Rosely Gregio]

Star meteors greetings!

Report Fire ball in Brazil to the light of the day

Me, Rosely Gregio reviews you of the Meteorobs list the following reporte
about observation of fire ball in the south of Brazil for my friend Alex
Amorim, amateur astronomer and observer of the sky since many years.

  Report

          The observer's name: Alexandre Amorim
          The observer's e-mail: costeira1 at yahoo.com
          Address: R. Antonio D. Souza, 315 - Florianópolis, SC, Brazil

          Date: 17/18 May 2004

         Universal Time: 11:12:16

          Schedule of Standard or Hourly Time of Summer?
          (x) Standard Schedule - () Schedule of Summer

          Name of the location: Carianos, Florianópolis
          Latitude:  27th 39 ' 37 " S
          Longitude:  48th 32 ' 37 " W

          How much luminous the meteor was?
          Scale of magnitude stellar pattern: ~ -15  more luminous than the
full moon;

          How long did it last?

          Duration: 1 to 2 seconds

          What color was?
          Color: silver white

          In what direction you did see it FIRST?
          Initial azimuth in 90 degrees

          Azimuth type:

          () Magnetic
          (x) True

          If you are not familiarized with determining azimuths, indicate
one of the following ones:

          () Directly on top (zenith)
          () North
          () Northeast
          (x) East
          () Southeast
          () South
          () Southwest
          () West
          () Northwest
          () I am not safe.

          Initial altitude in degrees: 30

          Final azimuth in degrees: 110

          Azimuth type:
          () Magnetic
          (x) True

          If you are not familiarized with determining azimuths, indicate
one of the following ones:

          () Directly on top
          () North
          () Northeast
          () East
          (x) Southeast
          () South
          () Southwest
          () West
          () Northwest
          () I am not safe

          How much distant on the horizon the meteor was when he was seen
the last time?
          Final height in degrees: 15

          Did it pass directly on top?

          () Yes
          (x) Not

          The one what speed you saw the meteor?

          (In relation to the angular speed there is to use two scales, the
first is
          known as subjective scale, and it is indicated as Fast, Moderate,
Slow, etc. THE
          another possibility, that is the one that he/she/it should use,
bases on the estimate of the speed
          in degrees a second.

          Dear angular speed (degrees / seg): 12 to 15

          If you are not familiarized in determining the angular speed,
indicate one of the
          following:

          () Very Fast;
          () Fast;
          (x) Medium;
          () Slow;
          () Very Slow;
          () I am not safe.

          Did the object leave a trace?

          (x) Yes
          () Not

          He/she left a white trace, similar to the contrail of airships to
jet. It was
          observed even to made a mistake with the close clouds, once the
sky was
          partially cloudy.

          How long did it last?
           ~5 minutes

          What color was the trace?
          Color: white

          How much long the trace was?
          Measure in degrees of the size of the trace: 20

          Did you see a terminal flash with this fireball?

          (x) Yes
          () Not

         Possibly it would finish in flash because the observation was
accomplished in full light of the day
          and a slight crack end was noticed.

          Did you hear any simultaneous sound associated with this fireball?

          () Yes
          (x) Not

          It was not possible to detect any sound by virtue of the noise of
automobiles in the
          proximities (it was hourly of I moderated in the main avenue of
the airport of
          Florianópolis).

          Other comments: The sky was partially cloudy, even so exactly in
the direction
          East - Southeast there were parts of visible blue sky. The meteor
crossed this area and yours
          trace was visible up to 5 minutes after the passage. After these 5
minutes it was
          difficult to observe the trace because he made a mistaked with the
close clouds.
          As the dear magnitude, was sensibly more brilliant than the Full
Moon
          possessing a brilliant central area.
         Analyzing the simulation of the sky with SkyMap For 9, the meteor
possibly has radiant
          among the constellations Pisces, Eridanus, Cetus or even Aries.

Alex Amorim

The Colonel-aviator Ricardo Cézar Mannrich, that participated for the
morning
of the training with supersonic airplanes AMX in Santa Catarina,
it informed that there was not any release that could be confused
with the reports described above.

Very thankful for the attention and good skies for everybody!
Celestial hugs


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http://reabrasil.astrodatabase.net


R.Gregio
Mococa/ SP - Br Lat.21.27.54S Long.47.00.21W
rgregio at uol.com.br
http://rgregio.astrodatabase.net
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http://geocities.yahoo.com.br/rgregio2001/
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http://www.geocities.com/alnitack_br/


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