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Astronomy & Near Earth Phenomena

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Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

I will be posting here randomly as I spot any Near Earth Orbit (NEO) Potentially Hazardous Asteroids (PHAs) that get between us and the moon. i.e. less than 1 LD (lunar distance).

I get this info from Space Weather (list is near the bottom)

The asteroid 2011 AN52 will get to 0.8 LD but is only 8 metres across. On Jan 17 2011 . Link here for longer list.

Posted January 16, 2011, 22:40:51 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

Offline Data
United Kingdom Administrator
Posts: 5198
Rank: Certified

That’s a neat idea Snowy, you can inform us of our pending doom  Shocked.

Hopefully there won’t be many posts made in this topic, but lets see.
Posted January 17, 2011, 12:30:10 PM Logged

Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

A new PHA coming up and I missed one on the 9th of FEB.

Name          Date of          Distance (LD = Lunar Distance)
                  closest               and Size
                  approach

2011 CA7   Feb 9       0.3 LD and only 4 meters across.

2009 BD     Jun 2       0.9 LD and only 9 meters across.
Posted February 12, 2011, 11:02:47 AM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

New one found.

2011 EB74     Mar 16     0.9 LD        18 m

Click here for more complete list.
Posted March 16, 2011, 18:04:47 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

I missed 2.

2011 GW9      Apr 6       0.5 LD        10 m
2011 GP28     Apr 6       0.2 LD        6 m

And this one is still to come.

2009 BD     Jun 2       0.9 LD        9 m.

Spaceweather has a meteor video today (08/04/2011). It was clocked travelling at 32,400 mph and parts landed close to the Kentucky border.
Posted April 08, 2011, 18:10:21 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

Not been any close PHAs for a while.

June 27th the asteroid 2011 MD will pass at 0.05 LD from us. It's only 13 meters across so is nowhere near a planet buster.

Info from Space Weather site.
Here is a list of NEOs.
Posted June 24, 2011, 18:00:52 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

Missed one from Spaceweather.

2011 OD18     July 28     0.4 LD     22m

And another still to come.

2005 YU55      Nov 9       0.8 LD     175m
Posted August 07, 2011, 10:44:18 AM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

Offline DD1975
England Posts: 1615
Rank: Certified

NEO


A new study into Near Earth Objects annouced:

http://www.bbc.co.uk/news/science-environment-16651642

So, what do we think is the best method guys?

I'm with the Kinetic Impactor myself  Smiley
Posted January 21, 2012, 15:04:09 PM Logged
Smoke me a Kipper I'll be back for breakfast - Ace Rimmer

Offline DD1975
England Posts: 1615
Rank: Certified

And I actually mean the ones in space too  Tongue

Looks like we had a near miss recently

http://www.bbc.co.uk/news/science-environment-16756450

DD
Posted January 29, 2012, 22:02:00 PM Logged
Smoke me a Kipper I'll be back for breakfast - Ace Rimmer

Offline Data
United Kingdom Administrator
Posts: 5198
Rank: Certified

DD I merged two of your topics with Snowys PHA watch. 
Posted January 30, 2012, 13:42:09 PM Logged

Offline DD1975
England Posts: 1615
Rank: Certified

NO problem, makes sense to me  thumbsup
Posted January 30, 2012, 18:42:42 PM Logged
Smoke me a Kipper I'll be back for breakfast - Ace Rimmer

Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

For those not wanting to read the PHA was named "2012 BX34" and passed by at 0.2 LD (Lunar Distance) on 27th Jan.

It was only spotted about 7 days before its closest approach.
Posted January 31, 2012, 17:40:22 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

Offline DD1975
England Posts: 1615
Rank: Certified

Which could be considered a little bit scary!!!
Posted January 31, 2012, 22:34:59 PM Logged
Smoke me a Kipper I'll be back for breakfast - Ace Rimmer

Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

It was only 13 meters accross. Some would've got through but most would've burnt up.

Likely damage would be 1 car or 1 roof with what was left. Most likely to hit sea.
Posted February 02, 2012, 17:22:45 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson

Offline Snowcrash Topic starter
England Global Moderator
Posts: 2790
Rank: Certified

Just watched Horizon: The good, the bad, and the ugly. It was about asteroids

The Tunguska event in 1908 was estimated at 1-10 mega ton explosion and estimated to be about 30-50 meter asteroid.

I revise my blasé comment in the previous post about a 13m asteroid.
Posted February 02, 2012, 21:10:19 PM Logged
“I cannot remember the books I've read any more than the meals I have eaten; even so, they have made me.”

Ralph Waldo Emerson
Astronomy & Near Earth Phenomena
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