Author Topic: Fireballs, comets, meteorites, meteors and asteroids  (Read 65805 times)

Yowbarb

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Fireballs, comets, meteorites, meteors and asteroids
« on: August 07, 2013, 12:04:29 PM »
This is our new Topic for Fireballs, comets, meteorites, meteors and asteroids -
The older one will always be available to read but is now locked.
The older Topic is still in Planet X Astronomy. The MOVE Function no longer works that is why I didn't move the older topic here.  ;)
This is due to changes to the Board ... re-org requested by Marshall.  :)
We now have to put the main EARTH, SOLAR and COSMIC events toward the top of the Planet X Town Hall page, since this is our main emphasis now, in preparation for what we feel is occurring already...

- Yowbarb
« Last Edit: January 24, 2014, 03:07:17 PM by Yowbarb »

Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #1 on: August 07, 2013, 12:12:02 PM »
Here are a couple of the links for sources we have used on the Town Hall for years...more will be posted soon...


http://www.amsmeteors.org/                                        American Meteor Society

http://www.amsmeteors.org/fireballs/fireball-report/    Fireball Logs

http://neo.jpl.nasa.gov/                                                 Near Earth Objects Program

http://neo.jpl.nasa.gov/ca/                                             Near Earth Objects Close Approach Tables


Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #2 on: August 22, 2013, 06:49:07 AM »
Marshall's main researcher, Bill put together a really great Fireballs chart.
This can be seen in Marshall's video of July 28, 2013.

Planet X System Observations and Orbital Analysis  1:30:57   57,736 Views

LINK:  http://youtu.be/K9szmVIqhV8

Your Own World Books·82 videos
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Published on Jul 28, 2013 
"For those of you who've been following and supporting our work at
yowusa.com over the years,
this is the video you've been waiting for." ...
[continued]

Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #3 on: August 23, 2013, 08:32:56 AM »
I went cross eyed trying to count them, but -
there have been approximately FIFTY fireball events
reported to the AMs in the past week. August 14 through August 21 2013.
- Yowbarb

http://www.amsmeteors.org/fireball_event/2013/

Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #4 on: August 28, 2013, 03:30:20 PM »
http://www.spaceweather.com/

DAYTIME METEOR OUTBURST:  Peter Brown of the University of Western Ontario reports an ourburst of Daytime Craterid meteors on August 28th. "The Canadian Meteor Orbit Radar is detecting about 20 meteors per hour (ZHR)," he says. "This is the first time in five years this has happened." The source of the shower is Comet Boattini (C/2007 W1). Because the comet's debris stream comes close to Earth, Jupiter and Saturn, it experiences gravitational perturbations which make the shower highly variable.

Try listening to the Daytime Craterids on Space Weather Radio:  http://spaceweatherradio.com/

..........................

Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #5 on: August 29, 2013, 08:33:49 AM »
Yowbarb Note: Please go to the Spaceweather page and click the link to see the movie.
=============================================================


http://www.spaceweather.com/

MAJOR FIREBALL EVENT:  Bill Cooke of NASA Meteoroid Environment Office reports that a major fireball event occurred over the southeastern USA on August 28th. The explosion was brighter than the Moon and it might have scattered meteorites on the ground.
Watch the movie, then read Cooke's full report below
"On August 28 at 07:27 UTC (2:27 AM local time in Alabama), all six NASA all-sky cameras in the southeast picked up a very bright fireball," he says. "Its peak magnitude was approximately -11, or six times brighter than the Last Quarter Moon. This may very well
be the brightest event our network has observed in 5 years of operation."

"The cameras were completely saturated, necessitating a manual solution of the fireball's trajectory and orbit," he adds. Initial results indicate that the meteoroid massed 45 kg (roughly 0.3 to 0.4 meters in diameter) and hit the top of Earth's atmosphere traveling
23.7 km/s (53,000 mph).

Cooke is currently examining doppler radar records and other data to determine where the fall zone is located.

Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #6 on: August 29, 2013, 10:12:36 PM »
Click link on page...  http://www.spaceweather.com/

MAJOR FIREBALL EVENT, UPGRADED: NASA's Meteoroid Environment Office has upgraded its estimates of a major fireball that exploded over the southeastern USA on August 28th. Lead researcher Bill Cooke says " the fireball reached a peak magnitude of -13, brighter than a Full Moon, and cast shadows on the ground. This indicates that the meteoroid had a mass of over 50 kg (110 lbs) and was about 40 cm (16 inches) in diameter. It hit the top of Earth's atmosphere traveling 23.7 km/s (53,000 mph)." Watch the movie, then read more about the fireball below:

"As far as I know, this is the brightest event our network has observed in 5 years of operation," he continues. "There are reports of sonic booms reaching the ground, and data from 4 doppler radars indicate that some meteorites may have fallen along the fireball's ground track." (Note: The city in the ground track map is Cleveland, Tennessee, not Cleveland, Ohio.)
Using data from multiple cameras, Cooke has calculated a preliminary orbit for the meteoroid. The shape and dimensions of the orbit are similar those of a Jupiter-family comet. If meteorites are recovered from the Tennessee countryside, their chemical composition will tell researchers more about the origin of the fireball.

Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #7 on: August 30, 2013, 05:42:50 PM »
Yowbarb Note:   :o
...
Watch the movie, at the link, below:


http://www.spaceweather.com/

MAJOR FIREBALL EVENT, UPGRADED (AGAIN):  

NASA's Meteoroid Environment Office has upgraded its estimates of a major fireball that exploded over the southeastern USA around 2:30 AM on August 28th. Lead researcher Bill Cooke says "the fireball reached a peak apparent magnitude of -16, about 20 times brighter than a Full Moon, and cast shadows on the ground. This indicates that the meteoroid had a mass of more than 110 kg (240 lbs) and was up to a meter in diameter. It hit the top of Earth's atmosphere traveling 25 km/s (56,000 mph)."

"This is the brightest event our network has observed in 5 years of operation," he continues. "There are reports of sonic booms reaching the ground, and data from 4 doppler radars indicate that some meteorites may have fallen along the fireball's ground track." (Note: The city in the ground track map is Cleveland, Tennessee, not Cleveland, Ohio.)

An initial calculation of the fireball's orbit suggested it might be a fragment from a Jupiter family comet. Improved estimates of the orbital parameters point to a different kind of object: a main belt asteroid. If meteorites are recovered from the Tennessee countryside, their chemical composition will tell researchers more about the origin of the fireball.

http://www.spaceweather.com/

...........................

Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #8 on: September 05, 2013, 03:39:22 AM »
I've been looking at the Close Approaches table posted on Spaceweather (just glancing at it) and never saw these listed.
I'm wondering if they were listed just before they went by...
- Yowbarb

Willsorr75

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #9 on: September 05, 2013, 06:44:51 AM »
It wouldn't surprise me if they were...
Stay informed, information is our first line of defense!
-Will

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #10 on: September 05, 2013, 09:51:26 AM »
It wouldn't surprise me if they were...

Back in the summer of 2005 I was watching asteroids closely. I mean I had an eagle eye on the neo jpl site. I swear there were times when they got posted after they whizzed on past. I mean there were some close calls that summer... 
•   Recent Close Approaches to Earth chart is below.
•   Portion of an Upcoming Close Approaches chart below
   
http://neo.jpl.nasa.gov/ca/

Yowbarb

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #11 on: September 10, 2013, 03:01:26 AM »
These two passed by and I am pretty sure they were not displayed on the little list of close approaches on Spaceweather, 'til they passed by.

2013 RO30...............0.8 LDs   Lunar Distances   

2013 RF32............... 0.4

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #12 on: September 11, 2013, 03:36:33 AM »
http://www.spaceweather.com/     http://fireballs.ndc.nasa.gov/

BUSY INTERSECTION:  Last night, NASA's all-sky fireball network recorded nearly two dozen fireballs streaking over the southern USA

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #13 on: September 21, 2013, 12:17:57 AM »
An ISON reference from Wikipedia
...
.....Around September 2013, it should become bright enough to be visible through small telescopes or binoculars.[10][18] However, C/2012 S1 is not expected to reach the naked eye magnitude of 6 until November.[19][21] Assuming it survives perihelion passage, it may be visible to the naked eye until early January 2014

http://en.wikipedia.org/wiki/C/2012_S1

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Re: Fireballs, comets, meteorites, meteors and asteroids
« Reply #14 on: September 28, 2013, 12:51:27 PM »
Since my post, Spaceweather updated their site and have a video of the fireball event.
Here are a couple of a captures of their video.
- Yowbarb
...
http://spaceweather.com/