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Tag Archive | C/2012 S1

ANOTHER Naked Eye Visible Comet Ahead Of Christmas 2018? C/2018 V1 (Machholz-Fujikawa-Iwamoto).

by Anura Guruge


Click to ENLARGE.


Comet C/2018 V1 ( Machholz-Fujikawa-Iwamoto )

Discovered: November 7, 2018 (yes, just last week).

Discoverers: One is Arizona (Donald E. Machholz, Jr.) & two in Japan (Shigehisa Fujikawa & Masayuki Iwamoto). You can find more here. Hence the name which credits all three.


C/2018 V1 is much more of a CLASSIC comet than our current ‘Christmas Comet of 2018‘, i.e., 46P/Wirtanen. That is why it has a ‘C/’ designation while the other is a ‘P/’. The ‘P/’ denotes that 46P/Wirtanen is a PERIODIC comet — one that swings around the sun on a regular basis (like a commuter). The ‘C/’, on the other hand, means that is a NON-PERIODIC. It means that this comet has not been previously seen in the last 200-years. Typically it means that it is a FIRST TIME visitor from far, far out in the Solar System, ideally from the Oort Cloud, the incubator of most comets at the very edge of our Solar System.

So, we are assuming it is a FRESH comet, with a lot of frozen matter that will sublimate as the comet gets closer and closer to the Sun. That is what makes it visible, gives it a tail and with luck makes it spectacular. Right now it is touch and go. Viewed through a powerful telescope you can already see a blue tail — that color indicating the presence of ionized Carbon Monoxide (CO+).

On Tuesday, November 27, 2018 it will be at its closest to Earth — 62 million miles. Comet ISON (C/2012 S1) that could have been the GREAT COMET of 2013 would have been 40 million miles. So, C/2018 V1 will be 22 million miles further out. BUT, unlike ISON it will make it around the Sun. That is a given. It is NOT a sungrazer. Actually it doesn’t get very close to the Sun! As you can see from the above diagram it does not even cross Mercury’s orbit.

Right now it is BORDERLINE — but shows more promise than 46P.

I will keep you posted. This was a BIG heads up.


Comet ISON IF it had rounded the Sun — rather than getting FRIED by it, because it went so close.



46P/Wirtanen


Click to ENLARGE and admire. From the JPL Small-Body Database Browser.


Related posts:
Check Category ‘astronomy’.


by Anura Guruge

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Alton (N.H.) Gilman Library, “Sky Over Alton” Astronomy Presentation, October 17, 2014 — Some Pictures.

Anura Guruge, June 8, 2013.
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by Anura Guruge


Related posts:
>> Slides for Alton Library astronomy presentation.
>> Alton Gilman astronomy presentation
>> Oct. 5, 2014.
>> Oct. 17 Alton presentation in ‘Baysider’ — Oct. 9, 2014.


>> Alton Gilman Library presentation
>>Nov. 6, 2013.
>> Presentation videos — Nov. 5, 2013.
>>
Taylor Presentation pictures — Nov. 5, 2013.

>> I make it to NASA — Nov. 4, 2013.

++++ Search on ‘Comet ISON’ on sidebar for other posts >>>>

**** Check my ISON blog.


Click to ENLARGE.

All these pictures (bar the first two) were taken by Devanee Guruge.

Alton photographer, John Bishop, a friend, who arrived and joined Devanee in taking pictures. So I had two tripods with cameras at the back.


It wasn’t packed but the folks that were there were very receptive and engaged. I had planned for about 90 minutes but we were still there, having a lot of fun, 2 hours later. They seemed to really like it — or at least that is what they claimed.

I had fun. But, I have never done a presentation where I have not had fun.

Our friend, Alton photographer, John Bishop, turned up — unexpectedly given that we thought we was going to be in Manchester visiting a friend that was in hospital. John set up his, professional grade Canon, and started taking pictures in tandem with Devanee — who relished the opportunity to use my Canon. I should get John’s pictures on Sunday.

Part II of this astronomy presentation is on Friday, November 20, 2014. You can come to that even if you didn’t come to last night. They are self-contained, though I will not go over the same material.

So that was that. I am glad that I did it.

Holly Brown, the librarian, always extremely nice, had displayed my astronomy books on a table etc. She was very happy, and that was good.


Slide (Hardcopy) For Gilman Library, “Sky Over Alton” Astronomy Presentation On October 17, 2014.

Anura Guruge, June 8, 2013.
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by Anura Guruge


Related posts:
>> Alton Gilman astronomy presentation
>> Oct. 5, 2014.
>> Oct. 17 Alton presentation in ‘Baysider’ — Oct. 9, 2014.


>> Alton Gilman Library presentation
>>Nov. 6, 2013.
>> Presentation videos — Nov. 5, 2013.
>>
Taylor Presentation pictures — Nov. 5, 2013.

>> I make it to NASA — Nov. 4, 2013.

++++ Search on ‘Comet ISON’ on sidebar for other posts >>>>

**** Check my ISON blog.


skyoverlatonflashpdf

Click image IF you want to download a 3.2MB Adobe Acrobat PDF of the slides. I tried to keep the transitions to a minimum so that most of the images will appear in the PDF. But, I am so used to using animation that I did NOT succeed entirely — though, I think, this is the BEST I have ever done. So IF some slides don’t make sense or they look incomplete is because there are OVERLAY transitions [i.e., animations] that don’t make it to the PDF. Sorry.


altonskyoveroct17445a

The slides. Click to ENLARGE. Use image above to download PDF of the slides. See caption notes ABOVE.


Telescope & Astronomy Presentation At The Alton, N.H., Gilman Library On October 17, 2014.

Anura Guruge, June 8, 2013.
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by Anura Guruge


Related posts:
>> Alton Gilman Library presentation
>>Nov. 6, 2013.
>> Presentation videos — Nov. 5, 2013.
>>
Taylor Presentation pictures — Nov. 5, 2013.

>> I make it to NASA — Nov. 4, 2013.

++++ Search on ‘Comet ISON’ on sidebar for other posts >>>>

**** Check my ISON blog.


Click to ENLARGE.

Use link below to access the the Alton Gilman Library original
— which has more details.

altonlibtel2b altonlibtel1a
Click here to access the Gilman Library Webpage about this presentation.

This relates back to my ‘Comet ISON‘ presentation at the Gilman Library last November. It went well, was reasonably well attended and, most of all, well received. Holly Brown, the librarian, was very pleased.

Since then I have kind of become a de facto local ‘expert’ on all things to do with the skies. So when they received this telescope in the Summer she asked me to have a look at it and see if there was anything I could do to kind of kick it off.

These two presentations, which were supposed to have been in September & October, but are now in October & November are the outcome of those conversations.

I haven’t had the time to actually use this telescope. I have, however, told a number of kids to borrow it from the library.

Peering through telescopes is no longer my thing. Which is why we are down to just one telescope at home. With my eyesight and time constraints I am much better off looking at images on the computer. And ironically that is what professional astronomers do. But, I am all in favor of kids exploring the skies with a telescope. So I am very glad that we have this cute little telescope at the library.

Now I have to start thinking about putting together a presentation for October 17th. It should be fun. So much I could cover. The sky is the limit.


NASA Websites Unable To Cope With Comet ISON Traffic — Another Bad Showing By NASA.

Anura Guruge, June 8, 2013.ISONPrintCover150206
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by
Anura Guruge


Related posts:
**** Scroll down or do search, MULTIPLE ISON posts a day ****
**** Check my ISON blog.


nasadown112
nasadown11
I fully understand that they must be getting a few hundred thousand hits per second.

BUT, we all knew that this would happen — and that it would happen today.

NASA, if it wanted, had PLENTY of time to increase their server capacity.

You are NOT talking about me and my economy hosting at GoDaddy.
But, even I managed to increase my capacity on the fly
when the pope resigned and I was getting huge spikes in traffic …

They have billions of dollars worth of IT infrastructure.

They have supercomputers!

They are supposed to be the shining example of U.S. technological superiority.

As far as I am concerned they have screwed up AGAIN — and here are two other examples;
example 1 & example 2.

No wonder people don’t trust the U.S. government. This is such a shame.

The head of NASA should be run out of town, impeached or whatever.
Basically fired.


Comet ISON, IF It Fragments, Could STILL Be A Great — Fragmentation Possible Even After Today’s Perihelion.

Anura Guruge, June 8, 2013.ISONPrintCover150206
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by
Anura Guruge


Related posts:
**** Scroll down or do search, MULTIPLE ISON posts a day ****
**** Check my ISON blog.


Fragmentation of Comet ISON was always on the cards.
Check my book.

But, as I have also always maintained (in my books) fragmentation, unless it is totally disastrous, does NOT have to be the end of the world.

Comet Ikeya–Seki, in 1965, C/1965 S1, THE BRIGHTEST comet seen since 1935, another Sungrazer like ISON (but one that went even closer) FRAGMENTED during perihelion.

That proved to be GOOD!

Why? The 3 main pieces stayed close together. But, now there were much, much more exposed surface area. So more of the frozen matter could sublimate (‘evaporate’). It is this sublimation which creates the coma and tails — which in turn is what makes a comet great or not-so-great.

So, fragmentation is OK — unless the comet gets pulverized, i.e., turns to a cloud of dust as did 2010’s Comet Elenin, C/2010 X1 — thought by some, totally irrationally, to be a doomsday comet, Nibiru. Well, that didn’t happen. A gauzy cloud of faint dust isn’t going to damage Earth!

From my big, black 'Comet ISON' book. Page 27. Use Amazon's FREE 'Look Inside'.

From my big, black ‘Comet ISON’ book. Page 27. Use Amazon’s FREE ‘Look Inside’.


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