Tag Archives: perihelion

Earth At Its Closest to Sun For ALL Of 2017 — Evening Of Wednesday, January 4.

by Anura Guruge


Click to ENLARGE.

perihelion


This happens, like clockwork, each and every year.

It has to do with the Earth’s orbit, around the Sun, being an ellipse (as is nearly all orbital paths in the Solar System). With any and all elliptical orbits you always have a closest and furthest point from the object being orbited. These are known (by the Latin) Perihelion & Aphelion.

Earth’s Perihelion with the Sun occurs in January. The Aphelion in July. In each case it is about 2 weeks after the last Solstice. This is how things are right now. Kind of a coincidence.

But it means that the Southern Hemisphere ALWAYS gets a bit closer to the Sun than the Northern. In other words, when the Northern Hemisphere is tilted towards the Sun, the Earth is at its furthest. C’est la vie.

Anywho. In 2017, Perihelion was on January 4th.


Related posts:
++++ Check Category ‘astronomy’ >>>>
++++
Search ‘Sunfor posts from prior years >>>>


by Anura Guruge

Today, Boxing Day, December 26, 2013 Would Have Been Comet ISON’s Closest Approach to Earth IF It Had Survived …

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


Related posts:
**** Search ‘ISON’ for multiple posts ****


isondec26


Click to ENLARGE. Updated image from my 'ISON for Kids' book.

Click to ENLARGE. Updated image from my ‘ISON for Kids’ book.


 

Comet ISON Maybe A Goner, But Comet Lovejoy, C/2013 R1, Is Still Out There. Another ‘Good’ Comet.

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


Related posts:
>> 4 comets in the sky — Nov. 11, 2013.
>> Latest on ISON, post demise
>>Dec. 2, 2013.
**** Scroll down or do search, MULTIPLE ISON posts a day November 28 & November 29 ****


C/2013 R1 (Lovejoy) still out there.


Where to see C/2013 R1 (Lovejoy) Dec. 6 - 15, 2013 -- over New Hampshire.

Where to see C/2013 R1 (Lovejoy) Dec. 6 – 15, 2013 — over New Hampshire. Click to ENLARGE. Arrow represents where it will be moving from E to NE each day …


That it is C/2013 R1, whereas Comet ISON was C/2012 S1, tells us that C/2013 R1 was discovered a one year after ISON.

It was actually discovered on September 7, 2013 by Australian amateur astronomer Terry Livejoy, and IT specialist by day.

This is Terry Lovejoy’s 4th comet.

His C/2011 W3 (Lovejoy), only visible, alas in the southern hemisphere, was a doozy!

Terry Lovejoy’s 2011 doozy, C/2011 W3 (Lovejoy) — the ‘great of 2011’, though viewing was restricted to the southern hemisphere.

C/2013 R1, since November 2013, at an apparent magnitude of +5 is in theory naked eye visible.

It is due to perihelion on December 22, 2013.

So it will continue to get brighter.

So if you are pining for poor ISON assuage your sorrows by trying to get a gander at the latest Lovejoy.

Comet ISON Still Has One Surprise Left! A Ghostly Goodbye In Mid-January 2014. A Comet ISON Meteor Shower. The Last Hurrah.

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


Related posts:
>> Latest on ISON, post demise
>>Dec. 2, 2013.
**** Scroll down or do search, MULTIPLE ISON posts a day November 28 & November 29 ****


Click to ENLARGE. Updated image from my 'ISON for Kids' book.

Click to ENLARGE. Updated image from my ‘ISON for Kids’ book.


Just because it went POOF doesn’t mean it didn’t leave its mark.

It left millions and millions of miles of dust and debris in its wake
— along the path it followed towards its fateful
tryst with the Sun.

That it had a 20 – 30% chance of going POOF was always on the cards.

I had covered it, in my 5 possible perihelion scenarios,
in all my ISON books.

We also knew that the Earth would cross Comet ISON’s INBOUND trail in mid-January 2014.

That will still happen.

That should produce a meteor shower of some form.

That is a given. Laws of physics.

We will cut across the dust and debris it left behind.

Nearly all meteor showers have to do with Earth crossing the debris trail left behind by a comet.
We have talked about that before. So this is NOT magic.

I will, of course, keep you appraised as we get closer and closer.

 

Latest On Comet ISON (Dec. 2): Survived Perihelion On Nov. 28, Severely Compromised — BUT Has Now Disintegrated Further.

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


Related posts:
**** Scroll down or do search, MULTIPLE ISON posts a day November 28 & November 29 ****


Click for full-size NASA image.

Click for full-size NASA image.


Comet ISON will NOT be naked eye visible!

It is basically toast now — or at least but a cloud of debris and dust.

A portion of the nucleus survived perihelion.

That is beyond debate or doubt.

The NASA images show that clearly.

But the Sun’s radiation and the torque on the fragile,
brittle, icy body

as it rounded the Sun, 700,000 miles above its surface,
travelling at 60 miles per second,
was too much.

Lots of it got broken off and sublimated — i.e., zapped, ‘evaporated’ from solid to gas.

The remnant that survived was obviously not stable.

It was most likely fractured.

None of this is NEW.

We have seen all of this before with other comets.

I talked about all of these scenarios in my Comet ISON books.

But, ISON is now basically dust.

We might get a spectacular meteor shower from it in January 2014 (and in years to come).

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

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


Comet ISON NOT Daylight Visible, Naked Eye, At Least Over New Hampshire (U.S.) On November 28, 2013 — Perihelion Day.

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


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


I just went looking.

Sun is out, unobscured — though there are some wispy, white clouds.

Quintessential New England, N.H., winter sky — brilliant blue.

I used BOTH my eclipse glasses and covering the Sun with my hand.

Took Devanee with me too.

Could NOT see anything. Maybe the sky is too bright. Maybe ISON isn’t bright enough.

Comet Ikeya–Seki, in 1965, C/1965 S1, THE BRIGHTEST comet seen since 1935 — which was indeed daylight visible, naked eye, close to perihelion. Not so, at least from N.H., for ISON.


Comet ISON Will Round The Sun At 18:45 GMT (UTC) Today, Thanksgiving — That Is 1:45 p.m. Eastern (U.S.). Watch On NASA.

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


Related posts:
>> ISON streaking towards Sun
>> 
— Nov. 27, 2013.
>> ISON live on SOHO
>>
— Nov. 26, 2013.
++++ Search on ‘Comet ISON’ on sidebar for other posts >>>>
**** Check my ISON blog.


What the actual orbital path looks like right now,
Thursday, November 28, 2013 — U.S. Thanksgiving.

It is now travelling close to
60 miles per second!

So it is covering a lot of distance very quickly.

From NASA JPL 'database'. Click to access. Interactive.

From NASA JPL ‘database’. Click to access. Interactive.


NASA provided chart of the perihelion timing.

NASA provided perihelion chart from their Website. Click to access.

NASA provided perihelion chart from their Website. Click to access.


Happy Thanksgiving, November 28, 2013 — The Day Of The Comet ISON, C/2012 S1, Perihelion.

Anura Guruge, June 8, 2013.

..
...
..by
Anura Guruge


6a00d8341c192953ef010536191623970c