Author Topic: COMET COLLECTION  (Read 100491 times)

yankeegal01

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Re: Comet collection
« Reply #30 on: February 28, 2010, 03:37:19 pm »
If it's in your favourites yankeegal01 right click on the thumbnail and the file name contains the date. Let's do some digging!

20080529_hi1b

yankeegal01

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Re: Comet collection
« Reply #31 on: February 28, 2010, 04:01:14 pm »
Just found another one similar.  Starts around 8.20 in the very, very lower left hand corner under the sun.  Its there until 12.0

20070429_hi1b

http://solarstormwatch.com/favourites/431

Caro

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Re: Comet collection
« Reply #32 on: February 28, 2010, 05:55:54 pm »
http://solarstormwatch.com/favourites/441

Bottom right, 0.00 to about 1.50.  :)

jules

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Re: Comet collection
« Reply #33 on: February 28, 2010, 08:49:24 pm »
If it's in your favourites yankeegal01 right click on the thumbnail and the file name contains the date. Let's do some digging!

20080529_hi1b

Great! Somebody fancy a bit of research? And could it be a line of sight satellite? ie they just appear to share the same bit of sky at that time?

algwat

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Re: COMET COLLECTION
« Reply #34 on: February 28, 2010, 10:05:58 pm »
Gidday all,

yankeegal01 object in  20070429_hi1b
http://solarstormwatch.com/favourites/431
and
Caro  object in
http://solarstormwatch.com/favourites/441

Are both Comet Encke, notice the tail position on either side of the sun.
There are no local manmade satellites that are close to STEREO, there in deep space.

yankeegal01 object in 20080529_hi1b is definitely Mercury, its orbit is between the sun and StereoB, you are seeing the darkside.

Kind regards, Al
--- It's the thrill of discovery that counts ----



voyager1682002

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Re: COMET COLLECTION
« Reply #35 on: March 01, 2010, 04:31:09 am »
Stereo Behind at 49.60 - 50.60, upper left, inside the black patch  - a comet, a planet,something else or just nothing  :o

 http://solarstormwatch.com/favourites/465

voyager1682002

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Re: COMET COLLECTION
« Reply #36 on: March 01, 2010, 01:36:59 pm »

yankeegal01

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Re: COMET COLLECTION
« Reply #37 on: March 01, 2010, 02:26:48 pm »
http://solarstormwatch.com/favourites/496

Starts around 11.20
20070329_hi1a

Mell

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Re: COMET COLLECTION
« Reply #38 on: March 01, 2010, 04:19:36 pm »
« Last Edit: March 01, 2010, 04:39:45 pm by Nihilady »

george helio

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Re: COMET COLLECTION
« Reply #39 on: March 01, 2010, 06:46:38 pm »

Here's a comet that has its tail hijacked.   :)

algwat

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Re: COMET COLLECTION
« Reply #40 on: March 01, 2010, 10:16:24 pm »
george helio has Comet Encke tail separaton event.
http://apod.nasa.gov/apod/ap071003.html

Nihilady and yankeegal01 have Comet Maccholz 96P
http://solarstormwatch.com/favourites/496
http://solarstormwatch.com/favourites/507

Nihilady has comet 2007 F1 LONEOS
http://solarstormwatch.com/favourites/509
Here is an amin I created as it crossed the STEREO H2 imager. Shows a very dynamic tail.
http://cometal.bigblog.com.au/data/4/22129/image/2007102831F1Loneostail2606720071221082938.gif

voyager1682002 has comet encke
http://solarstormwatch.com/favourites/493

kind regards, Al
« Last Edit: March 02, 2010, 12:47:48 am by algwat »

george helio

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Re: COMET COLLECTION
« Reply #41 on: March 02, 2010, 01:36:23 am »
george helio has Comet Encke tail separaton event.
http://apod.nasa.gov/apod/ap071003.html
Ah ha, so it's Encke I saw.  Thanks.  [nice link, too.]

george helio

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Re: COMET COLLECTION
« Reply #42 on: March 02, 2010, 03:18:48 pm »
Here is a triple comet that seems a likely candidate for succombing to the Roche Limit.   

Questions:

What is the typical Roche limit for Sun grazers?  1.5 million km or so, perhaps? 

I don't know the scale I'm seeing in the video clips but it seems to me that these comets may be outside the Roche Limit.  Is this likely, at least in this example?

Also, almost all the comets I see have steep orbital inclinations.  How can that be?  Part of the answer, I suspect, is that it is very hard to see Sun grazers in the more intensely bright horizontal (ecliptic?) region on the screen.   Another oddity is that they are almost all coming out of the Southern hemisphere (assuming south is on the bottom half of the screen).  Why would that be the case?

voyager1682002

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Re: COMET COLLECTION
« Reply #43 on: March 03, 2010, 04:02:17 am »
Stereo Ahead - lower right at 20.09 - 22.80, it's frozen for a few seconds.

http://solarstormwatch.com/favourites/613

voyager1682002

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Re: COMET COLLECTION
« Reply #44 on: March 03, 2010, 07:46:44 am »
2 comets in SB - 1.80 - 4.70 and 24.20 - 24.90 (lower left)

4 comets in SA - 2.60 - 5.20
                       - 25.10 - 26.00   
                       - 27.50 - 29.60
                       - 37.20 - 37.90  (all at lower right)

http://solarstormwatch.com/favourites/619

don't blink people  ;D