Comet on SOHO images

MeteorWayne · Jun 9, 2007

If you go here and select the SOHO C3 and C2 movies, around the 7th and 8th of June you can see a comet approaching to the lower right of the sun. I think there was also a much smaller one (with no tail) earlier. It did not survive the trip <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

MeteorWayne · Jun 9, 2007

I am disappointed in the SDC community. Only 6 view before this one in 3 hours, I mean I know it's the weekend. How many has the Paris thread had? Oh well, I will still try and share my interests as we all do <img src="/images/icons/smile.gif" /> humbled Wayne <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

mvp347 · Jun 9, 2007

wow, very interesting

3488 · Jun 9, 2007

Hi MeteorWayne, I am very interested in this. I have been out all afternoon & have just got back. I like those clips very much. Also at the bottom right, you can see Aldebaran / Alpha Tauri, move out of the frame, to the lower right of the Sun. I could not give a damn about Paris Hilton, a spoilt little rich brat, who needs to grow up!!!!!!!!! The comets in question, I wonder if it would be possible to determine their orbits??? Once again thanks MeteorWayne for this tip off. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

portercc · Jun 9, 2007

Hey MW, not always a lot of traffic on weekends. Good stuff. I usually keep a closer eye on SOHO when there is a little more activity. Try to stay humble anyway.

3488 · Jun 9, 2007

Interesting SOHO C2 image. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

3488 · Jun 9, 2007

Interesting SOHO C3 image. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

silylene old · Jun 9, 2007

It always surprises me how many comets SOHO finds. <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center">- - - - - - - - - - - - - - - - - - - - - - </div><div class="Discussion_UserSignature" align="center">I really, really, really miss the "first unread post" function. </div> </div>

derekmcd · Jun 9, 2007

Indeed. These images never cease to amaze me. <div class="Discussion_UserSignature"> <div> </div> <div>"If something's hard to do, then it's not worth doing." - Homer Simpson</div> </div>

Boris_Badenov · Jun 9, 2007

Hey, I've been out to the ranch being a conscientious & supportive child. I been doing poop patrol for 2 horses & 4 German Shepherds while mom recuperates from a fall 3 weeks ago. Pop is 84 this year & he needed a break too. It's not just a job, it's a dooty!!! <img src="/images/icons/wink.gif" /> Now that I've returned home from a hard day on the ranch, I see these pix are excellent. I would expect no less from your research. <img src="/images/icons/smile.gif" /> In the C3 gif, which planet traverses the screen? <div class="Discussion_UserSignature"> <div align="center">. </div><div align="center">Never roll in the mud with a pig. You'll both get dirty & the pig likes it.</div> </div>

3488 · Jun 9, 2007

Hi Boris1961. It isn't a planet. Its the red giant star, Aldebaran / Alpha Tauri. You can also make out the Hyades. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

robnissen · Jun 9, 2007

I am disappointed in the SDC community. Only 6 view before this one in 3 hours, I mean I know it's the weekend. Give me a fricken break. 1) I tend to come here on weekdays, not weekends, 2) I'm sorry you got your little feelings hurt because people didn't immediately flock to your thread; 3) Soho has discovered 100s if not 1000s of comets, if some people don't find the latest image interesting, I don't think you should insult them by comparing us to Paris Hilton freaks; and 4) I come here for the interesting science discussions, not to be insulted because someone's feelings were hurt because his thread was not viewed often enough and quickly enough.

MeteorWayne · Jun 10, 2007

These are Kreutz family comets (one of the sungrazing families, derived from a progenitor that broke up eons ago). I have QO duty at the observatory coming up soon, will post more details on them later when I get back. <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

MeteorWayne · Jun 10, 2007

Lighten up, it was a joke <img src="/images/icons/laugh.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

MeteorWayne · Jun 10, 2007

Andrew was right on the ball with his ID of Aldebaran. <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Jun 10, 2007

Thanks MeteorWayne. I will look for some more SOHO images like that, & post them. This is a great thread. Thanks for starting it. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Jun 10, 2007

I love watching the C2 and C3 Lasco movies anyway as the sun puffs and pushes material off into space. It's addictive!! I check every few days at most. I was checking out the sun to see if we will see any sunspots at our public observing session at the NJAA, but it appears the weather has made that a moot point <img src="/images/icons/frown.gif" /> Wayne <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Jun 10, 2007

I take it that you are having lousy weather then??? Here it is sunny & 23 C. Not bad really. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Jun 10, 2007

21C Overcast, occasional light drizzle <img src="/images/icons/frown.gif" /> Oh well, I copied all the sun SOHO images to a thumb drive, since the sun is usually the subject of the Suday afternoon session anyway (it being out and all <img src="/images/icons/wink.gif" /> ) Also, I am bringing my 2007 Lyrid, 2006 Orionid, and meteor summary Excel spreadsheets; since I'm the Team Leader, I have some say in the afternoon's program <img src="/images/icons/smile.gif" /> A cloudy Sunday is likely to be lightly attended anyway. BTW I've done most of my Kreutz research, if it's slow enough I should have time to organize it during the 3 hours, so should post in later this evening, my time. After I look at the Library, that is, being newly installed as the NJAA Librarian. Apropos, don't you think? <img src="/images/icons/laugh.gif" /> MW Edited to shorten sentences to ease readability. <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Jun 10, 2007

It sounds like an interesting position at the NJAA. Looking forward to your Kreutz research results. I have a lot of questions about these weird comets. What type are they, chemical composition, nature of parent body / bodies, what happened & when? So as you can see, I am not asking for much. <img src="/images/icons/wink.gif" /> I take it the Excel spreadsheets are the results of observations?? Below SOHO C3 image on: Sunday 3rd June 2007, clearly showing Aldebaran / Alpha Tauri & the Hyades. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

3488 · Jun 10, 2007

Below SOHO C3 image on: Saturday 9th June 2007, clearly showing Al Nath / Beta Tauri, in the top left & Zeta Tauri, bottom left, the Horns of Taurus. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Jun 10, 2007

OK, Sungrazing Comets 101 There are two basic classes, Sungrazing comets, and Sunskirting comets, difference in perihelion defining them Sungrazing Comets About 90% belong to the Kreutz sungrazing group These have 600-1100 year orbits with q (perihelion)= 0.0047-0.0095 AU (703,000-1.4 million km, 437,000-883,000 miles). The inclination is 144.0 degrees (retrograde). Most are small, about 16-130 meters (50-425 feet) in diameter, and only the largest, with q /> .005 AU survive the trip. (notice the larger one visible in the recent images did not make it, and the much smaller one a few hours earlier, didn't even make it to perihelion, evaporating on the way in.) They are thought to have originated from one large (D=~120km) comet with a period of ~1000 years. Between 10 and 20,000 years ago, this comet was disrupted by violent outgassing and/or tidal disruption. The largest piece lasted until about 371 BC, when it split into 3. The largest remaining fragment, with a period of ~350 years survived intact and was observed during returns in the 1st, 4th, 8th, and 11th centuries, and the remains may have been the Comet of 1847. This fragment was disrupted (by the same mechanisms again) during the 11th century appearence, and gave rise to Kreutz Subgroup I Well known comets derived from this are: C/1443 D1 (The Great March Comet) C/1963 R1 (Peroyra) It also includes all the comets discovered by the SMM (10) nd SOLWIND (6) satellites, and about 67% of those discovered by SOHO. ~ >840 of SOHO's > 1259 comets The next largest fragment from the 11th century breakup, with a period of ~700 years gave rise to Kreutz Subgroup II <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Jun 11, 2007

Thanks very much MeteorWayne. Seem to be problems with Uplink today. Very interesting. Hopefully STEREO will find more, & perhaps get 3D views of these weird comets. Is this your own research? I will come back later, as there seems to be problems with Uplink. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Jun 11, 2007

See edits in message above if I can get SDC (Is that stupid dot come today or what?) to accept it <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

MeteorWayne · Jun 11, 2007

June Kreutz trajectories on SOHO's LASCO C3 <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

Comet on SOHO images

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