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Author Topic: Asteroid pass  (Read 10160 times)
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W7TFO
WTF-OVER in 7 land Dennis
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IN A TRIODE NO ONE CAN HEAR YOUR SCREEN


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« on: November 09, 2011, 01:28:33 PM »

Any astronomers in the group with a take on this?

73DG
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KA2DZT
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« Reply #1 on: November 09, 2011, 01:37:49 PM »

Sure, the big rock came flying by around 6:30 last night.  Did you see it??  The thing even had blinking lights on it as it past over head.

Let me know

Fred
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W7TFO
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« Reply #2 on: November 09, 2011, 01:49:57 PM »

What?

No "earth-asteroid-earth" radio?

Well! Wink

73DG
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KA2DZT
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« Reply #3 on: November 09, 2011, 02:08:58 PM »

Dennis,

You can always count on me for accurate up-to-minute information.

Let me know if there is anything else.

Roger Wilco, Over and Out

Fred
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Steve - K4HX
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« Reply #4 on: November 09, 2011, 08:24:22 PM »

Did anyone make a meteor bounce contact?
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K1JJ
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« Reply #5 on: November 09, 2011, 08:55:31 PM »

SETI picked up a report of a near-asteroid planet.  Evidently the natives were rather nervous as they passed by.   Shocked


Actually, I understand it was very difficult to see without a moderately-sized telescope and even then probably looked like a faint star.  Being only a few hundred yards in diameter makes it a small target 200K miles out.

I know this cuz I've observed the three moon craters, Armstrong, Aldrin and Collins that are near the Apollo 9 landing site. They are between 1-3 miles in diameter and I could barely pick them out using my 22" mirrored scope.

Imagine viewing the LA coliseum from the east coast, 2500 miles away. Now move it out to 240,000 miles, X100. Same thing, more or less.


There are some pictures on the web of the asteroid taken by an astro-satelite which shows a grainy looking oval rock.

T
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N4LTA
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« Reply #6 on: November 09, 2011, 09:54:55 PM »

It was a 13th magnitude object that several amateurs observed, but many missed it because one of the services that provided tracking info gave out bad info and many were looking for it at the wrong place. One guy had a nice video on it Cloudy Nights.
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K1JJ
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« Reply #7 on: November 09, 2011, 10:18:11 PM »

Yep, 13th magnitude is pretty faint.  Must have looked like a star.   Since the naked eye can detect 6-7th magnitude at best, there was no chance without a telescope.

I remember searching for Pluto once.  Pluto's visual apparent magnitude averages 15.1, brightening to 13.65 at perihelion.  I was amazed at how distant and faint it really was once finding it.  2.75 billion miles from Earth will do that... Wink

T

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Ed/KB1HYS
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« Reply #8 on: November 09, 2011, 10:53:28 PM »

Supposedly a REALLY close one will be June 6th, 2028.  They said (JPL) that it would be even closer than this one... which is pretty dang close!
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73 de Ed/KB1HYS
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« Reply #9 on: November 10, 2011, 09:42:23 AM »

2028?

Can't wait.
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N4LTA
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« Reply #10 on: November 10, 2011, 10:40:57 AM »

Heres a picture of the asteroids pass - very faint.

The guy who took it is a very good amateur astronomer

http://www.astropix.com/HTML/SHOW_DIG/Asteroid_2005_YU55.HTM
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KA2DZT
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« Reply #11 on: November 10, 2011, 11:44:17 AM »

Can't really see anything but the stars.
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N4LTA
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« Reply #12 on: November 10, 2011, 11:58:59 AM »

there is a very fine set of streaks - one for each exposure - all in a line.

Pat
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KA2DZT
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« Reply #13 on: November 10, 2011, 12:53:59 PM »

Pat,

OK, now I think I understand what I'm seeing.  I saw the streaks but didn't see any object.

The lines are the Sun light reflected off the moving asteroid over the span of exposure time.  Then there are multiple exposures.

Do I have this correct??

If you read my first post on this thread, the asteroid I saw had blinking lights on it.  At least, that's what I told DG (W7TFO) in an attempt to confuse him.  Seems Dennis didn't get too confused.

Fred
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N4LTA
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« Reply #14 on: November 10, 2011, 02:59:16 PM »

Yes - I think he made eleven 10 second exposures - The telescope was tracking the stars so they are points but the asteroid moved across the field faster than the stars and made the streaks.

In order to find the thing - most went to a certain area near a known star that the asteroid was supposed to pass and waited. Unfortunately  - someone made a mistake in calculating the position and a large percentage of people were waiting at the wrong spot. (about a degree away)

I am pretty sure that the blinking lights were on the alien vessel trying to hide behind the asteroid and record 75 meter am signals from the Northeast.
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W7TFO
WTF-OVER in 7 land Dennis
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IN A TRIODE NO ONE CAN HEAR YOUR SCREEN


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« Reply #15 on: November 10, 2011, 06:18:30 PM »

If you read my first post on this thread, the asteroid I saw had blinking lights on it.  At least, that's what I told DG (W7TFO) in an attempt to confuse him.  Seems Dennis didn't get too confused.
Fred

Aw, come on, Fred.  I was THOUROUGHLY confused before you were born.  Huh

At least I've never called you Frank Cool.

Some people pay big money for an altered state, mine came as original equipment!

73DG  aka Prince O' Weird

ps...My sister here says she saw a shadow cross the moon that night...Hmmmm.
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W1ATR
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« Reply #16 on: November 11, 2011, 09:07:46 AM »

Hey Fred, here's an actual video where you can see it much more clearly.

http://www.youtube.com/watch?v=AK2iwJfcsok
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Rick & "Roosevelt"


« Reply #17 on: November 12, 2011, 08:30:06 AM »

Pretty funny.   

But the background shot of the moon throughout the vid actually displayed a good example of astronomical 'seeing' changes.   Notice the moon going into and out of focus because of variable atmospheric refraction, etc. 

The seeing effects were so broad (over the whole moon) that I suspect it was a very bad night.   Halloween?  Grin
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RICK  *W3RSW*
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« Reply #18 on: November 12, 2011, 10:22:36 AM »

I thought the video was pretty funny too.  Looks real but, I don't think so.  People on this board are trying to really confuse me.

I think the big rock traveled in the opposite direction  from what was shown in that video.

Fred
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« Reply #19 on: November 15, 2011, 09:19:30 PM »

the camera was just upside down. Grin
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