- Posts: 470
- Thank you received: 20
fireball in the sky (Sept 21st)
- mjc
- Offline
- Main Sequence
Less
More
12 years 3 months ago #95095
by mjc
Replied by mjc on topic Re: fireball in the sky (Sept 21st)
I also questioned whether this object would be man-made space debris due to
the east-west trajectory.
It certainly does look like multiple pieces of something.
Unless evidence to the contrary comes in I'm assuming that something to be of natural origins.
*If* it was man-made I'd put my money on an Israeli satellite as they launch retrograde to avoid a launch failure causing material falling on their neighbours and the "fall out" that that would entail.
From www.focus.technion.ac.il/Feb11/spaceStory1.htm :
"Israel became the eighth nation in the world to launch a satellite. It was called Ofek 1 (‘Horizon 1’ in Hebrew), weighed 155.5 kg (343 lbs), and like many of Israel’s achievements, it was done the hard way. Every other nation’s satellites, without exception, are launched from west to east — thus using the slingshot effect of the earth, helping rockets gain the speed needed to launch satellites into orbit. For Israel, this would send the launch rocket’s trajectory over hostile Arab territory. So Israel launches satellites from east to west over the Mediterranean, against the spin of the earth. Necessity has spurred invention. With tiny resources and major constraints, Israel has become a world leader in miniaturizing satellites, simply because it had to."
Mark C.
the east-west trajectory.
It certainly does look like multiple pieces of something.
Unless evidence to the contrary comes in I'm assuming that something to be of natural origins.
*If* it was man-made I'd put my money on an Israeli satellite as they launch retrograde to avoid a launch failure causing material falling on their neighbours and the "fall out" that that would entail.
From www.focus.technion.ac.il/Feb11/spaceStory1.htm :
"Israel became the eighth nation in the world to launch a satellite. It was called Ofek 1 (‘Horizon 1’ in Hebrew), weighed 155.5 kg (343 lbs), and like many of Israel’s achievements, it was done the hard way. Every other nation’s satellites, without exception, are launched from west to east — thus using the slingshot effect of the earth, helping rockets gain the speed needed to launch satellites into orbit. For Israel, this would send the launch rocket’s trajectory over hostile Arab territory. So Israel launches satellites from east to west over the Mediterranean, against the spin of the earth. Necessity has spurred invention. With tiny resources and major constraints, Israel has become a world leader in miniaturizing satellites, simply because it had to."
Mark C.
The following user(s) said Thank You: Seanie_Morris
Please Log in or Create an account to join the conversation.
- dave_lillis
- Offline
- Super Giant
12 years 3 months ago #95105
by dave_lillis
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
Replied by dave_lillis on topic Re: fireball in the sky (Sept 21st)
WOW, that is some meteor, we were out observing in the observatory from 9 Friday evening till 2 Saturday morning and didn't catch this. typical!
domes don't make good observing locations for meteor watching .
Does anyone know what constellations it was seen passing through from Ireland.??
Funnily enough, a group of us were out on Tuesday night and at around 11-11.15 we saw a very slow moving north\south meteor below Aquila, it was tumbling, lasted about 5 seconds and left a long duration trail, nothing as spectacular as the Friday event though.
domes don't make good observing locations for meteor watching .
Does anyone know what constellations it was seen passing through from Ireland.??
Funnily enough, a group of us were out on Tuesday night and at around 11-11.15 we saw a very slow moving north\south meteor below Aquila, it was tumbling, lasted about 5 seconds and left a long duration trail, nothing as spectacular as the Friday event though.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
Please Log in or Create an account to join the conversation.
- Seanie_Morris
- Offline
- Administrator
Less
More
- Posts: 9640
- Thank you received: 547
12 years 2 months ago #95120
by Seanie_Morris
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
Replied by Seanie_Morris on topic Re: fireball in the sky (Sept 21st)
Anyone willing to come live on air with me on Midlands 103 this morning (c. 10:30am) to talk about what you saw, text me on 087 6825910 ASAP!
Seanie.
Seanie.
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
Please Log in or Create an account to join the conversation.
- Graham
- Offline
- Main Sequence
Less
More
- Posts: 247
- Thank you received: 32
12 years 2 months ago #95232
by Graham
Replied by Graham on topic Re: fireball in the sky (Sept 21st)
(From Sonataco)
Based on that trajectory, I can now present some very first, very cautious conclusions about the heliocentric orbit of this meteoroid.The solutions strongly favour an identification as an Aten asteroid.
' sattrackcam.blogspot.nl/ '
Selection of Videos
' lunarmeteoritehunters.blogspot.jp/2012/0...e-videos-on-web.html '
Based on that trajectory, I can now present some very first, very cautious conclusions about the heliocentric orbit of this meteoroid.The solutions strongly favour an identification as an Aten asteroid.
' sattrackcam.blogspot.nl/ '
Selection of Videos
' lunarmeteoritehunters.blogspot.jp/2012/0...e-videos-on-web.html '
Please Log in or Create an account to join the conversation.
- flt158
- Away
- Super Giant
Less
More
- Posts: 2535
- Thank you received: 2465
12 years 2 months ago #95250
by flt158
Replied by flt158 on topic Re: fireball in the sky (Sept 21st)
How relieved I am it appears to have been an asteroid. Thank you, Graham for the link. Please keep us informed about any further developments.
Aubrey.
Aubrey.
Please Log in or Create an account to join the conversation.
- dave_lillis
- Offline
- Super Giant
12 years 2 months ago #95251
by dave_lillis
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
Replied by dave_lillis on topic Re: fireball in the sky (Sept 21st)
well, there is even more to this story then we thought, have a look at
www.skyandtelescope.com/news/Amazing-Met...Earth-172332451.html
www.skyandtelescope.com/news/Amazing-Met...Earth-172332451.html
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
Please Log in or Create an account to join the conversation.
Moderators: Neill
Time to create page: 0.129 seconds