Tag Archive | position

Comet ISON, C/2012 S1, Will Cross Mars’ Orbit On October 1, 2013 With A 6.7 Million Mile (0.0723 AU) Separation.

Anura Guruge, June 8, 2013.
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Anura Guruge


Click to ENLARGE. Created using the 'Solar System Scope' model described in the Sept. 8, 2013, posting (below).

Click to ENLARGE. Created using the ‘Solar System Scope’ model described in the Sept. 8, 2013, posting (below).


That is five times closer than it will get to Earth, assuming it survives perihelion, on Boxing Day, December 26, 2013.

Those kind of ‘close’ there will be no dramatics. It will be shipping passing by in the night so to speak. With luck Mars Rover will send us pictures.

After October 1, just a week away, it starts getting very close to us.

It will cross Earth’s orbit, inbound, on November 2, 2013. The separation at that time will be 111.8 million miles, 1.2 AU. That is not CLOSE.

ForKidsIlls3

Very Cool, Very Accurate Interactive Comet ISON Space Model By ‘Solar System Scope’.

Anura Guruge, June 8, 2013.ISONPrintCover150206
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Anura Guruge



SSmodelintro


Click to access model.

Click to access model.


Click ...

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I got this e-mail from inove.eu.com

We are experienced creators of online space models and have recently launched Comet ISON interactive model:

www.solarsystemscope.com/ison

Model visualizes current position of comet, assumed trajectory and all important moments.

It also contains interesting features such as movement in time or realistic mode.

Soon we will add also view from the Earth.”

Sanity Thankfully Prevails As Lone Astronomer, Seeking Publicity, Informs Media That Comet ISON Has Already Fizzled.

Anura Guruge, June 8, 2013.

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Anura Guruge


Click to access article.

Click to access article.


I am so relieved to see this article. My wife forwarded to me, earlier today, the original ‘ISON has fizzled’ article. I was a bit confounded. I thought it was a bit too early to jump to that conclusion.

Glad to see that other credible people agree.

There is still a long way to go in every sense of the word. The fun hasn’t even started yet. ISON is still in the asteroid belt.

July31cords

Click to ENLARGE. Annotations by Anura Guruge.

Comet ISON, C/2012 S1 (ISON): April 18, 2013 Update. Past Jupiter Approaching Outskirts Of Main Asteroid Belt.

Dec2013x125

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Anura Guruge


++++ Check Category ‘Updates‘ through sidebar dropdown for other related posts >>>>


Position on April 18, 2013 per JPL database. Click to access JPL database.

Position on April 18, 2013 per JPL database. Click to access JPL database.


So, Comet ISON is now 4.056 AU from the Sun.

So it has travelled 2.237 AU, 207.9 million miles since its discovery on Friday, September 21, 2012.

So that is 207.9 M miles in 209 days.

That is 0.995 million miles a day — and as shown in this post ISON’s speed continues to increase as it gets closer to the Sun. So its average speed since discovery has been around 41,000 miles per hour, or 11 miles per second.

Right now, ‘just past’ Jupiter it is on the very outskirts of the main asteroid belt. This diagram provides a good perspective as to where it is — using Jupiter’s orbit as a guide.

The densely packed white dots represent the main asteroid belt.

Here is a chart showing how the asteroids are distributed within the main belt — the lower axis showing the AU distance from the Sun. So the belt per se only really starts at around 3.25 AU. ISON won’t reach this edge till June. I will keep you updated.

Thekirkwoods

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