Tag Archives: Uranus

A/2017 U1 — Too Speculative To Claim That It Is ‘Interstellar’.

by Anura Guruge


Click to ENLARGE. From NASA/JPL @ http://www.jpl.nasa.gov.


Click to ENLARGE. Wikipedia: en.wikipedia.org/wiki/A/2017_U1


Definitely extremely interesting and intriguing. Wow. Orbital eccentricity of 1.1922! The greatest we have ever seen — the keywords here being ‘ever seen’. Comet ISON, that crashed and burned on Thanksgiving Day 2013 had an eccentricity of 1.0000015.

But, here is the deal with eccentricity. Anything over 1.0 means that the object will eventually leave our Solar System. That we know. But, what we cannot tell as yet is WHEN A/2017 U1 got that highly eccentric orbit. We just do NOT know — as yet. And maybe never will.

To claim that it must have originated OUTSIDE of our Solar System — is speculative. We do NOT have enough evidence.

NASA/JPL’s official statement confirms that: “So far, everything indicates this is likely an interstellar object, but more data would help to confirm it.” Note the ‘likely‘ and the part about ‘more data … for confirmation‘. That is exactly MY POINT and what I am trying to impress.

The claim that its orbit was NOT influenced by a close encounter with a planet — typically one of the BIG ones — is speculative. It could have been majorly torqued around by Uranus or Neptune. We don’t know.

I have a druthers that this is a very old comet — a periodic one at that, which on its last trip out, maybe 400 years ago got too close to a gas giant and had its orbit turned ‘upside down’.

We don’t know.

All I am stressing is do NOT jump to conclusions.

We know so little about what has happened in OUR Solar System and what is happening right now.

But, it is exciting.


Has a ton of good information about comets.

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by Anura Guruge

Titan, Saturn’s Largest Moon, Was Discovered This Day 362-Years Ago; March 25, 1655.

by Anura Guruge


Click to ENLARGE and read here. Wikipedia link: https://en.wikipedia.org/wiki/Titan_(moon)


Titan is the HUGE yellowish orb — too big to be fitted, per scale, in this diagram.


Titan is marked with the ‘T’.


So neat. Discovered ahead of Uranus — the first planet discovered with a telescope.

That Titan is the second largest Moon in the Solar System (to date) helped, Jupiter’s ‘Ganymede’, discovered 45 years earlier being the largest.


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by Anura Guruge

Percival Lowell, The ORIGINAL ‘Mr. Planet X’ & Pluto’s Godfather Was Born Today, 162-Years Ago; March 13, 1855.

by Anura Guruge


The Lowell Observatory, in Flagstaff, Arizona, from which Pluto was discovered was founded by Percival 14-years ahead of the discovery.

He was the original ‘Mr. Planet X‘ who was convinced that there was a 9th planet beyond Neptune.

He also believed that there had been Martians that dug an extensive network of canals on Mars — the Martian Canals!


Click the image to ENLARGE
and read here.coverjpg


As with the discoveries of Pluto and Uranus I talk about Percival Lowell, at length in my 2011 paperback & e-book Devanee’s Book of Dwarf Planets (which is definitely worth looking at (even if I say so myself)). 



pluto4


Map of the Martian canals.

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by Anura Guruge

Uranus Was Discovered 236-Years Ago, By British Astronomer William Herschel.

by Anura Guruge


First planet discovered by a KNOWN person. The other 6 (including Earth) had been known about since antiquity.

First planet discovered with the aid of a telescope.


Click the image to ENLARGE
and read here.coverjpg


As with the discovery of Pluto, I talked about the Uranus discovery in my 2011 full-color, paperback & e-book Devanee’s Book of Dwarf Planets (which is definitely worth looking at (even if I say so myself)). 



pluto4


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by Anura Guruge

Compelling Moon, Venus & Mars Conjunction Over New Hampshire, January 3, 2017.

by Anura Guruge


Taken around 6pm, on Monday, January 2, 2017, in Alton, New Hampshire -- handheld from my Nikon P900 (at 2,000mm zoom). Click to ENLARGE.

Taken around 6pm, on Monday, January 2, 2017, in Alton, New Hampshire — handheld from my Nikon P900 (at 2,000mm zoom). Click to ENLARGE.


jan2conjunction

Click to ENLARGE.

January 3, 2017.

jan3conjunction


Base sky map, as ever, is from: neave.com/planetarium/


Venus is the BRIGHT and bigger orb — at the bottom.

Mars is smaller and fainter — and at the top.

The ‘bigger’ light blue orb is Uranus — which is NOT naked eye visible. OK? So you will only see Venus, Mars and the Moon.


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by Anura Guruge

The Bright ‘Stars’, Actually Planets, Over New Hampshire, December 2013 — Venus To Begin With, Then Jupiter.

Anura Guruge, June 8, 2013.
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by
Anura Guruge


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Click images to ENLARGE.

Underlying ‘star’ charts extracted from neave.com/planetarium/


venusdec2013II
Jupiterdec2013II
Jupiterdec2013IIW


Early on in the ‘evening’ close to the Moon, in the Southwest, is Venus
— very big and bright.

Two days ago we had the perfect ‘Moon trying to eat Venus’ conjunction
(the ‘crescent and star‘ symbol that appears on Islamic flags).

Later on at night, STARTING in the East,
it is Jupiter.

But, as we spin around, everything in the night sky moves from East to West.

So during the night Jupiter will swing from East to West —
as the two images above show.

Every night around 10:45, before starting my 3rd shift, I take the dogs out.

In the Winter I always look up, towards the East, to see Jupiter.

During the Winter, night-by-night, Jupiter will be, at the same time, say 10:45, further West.

That is because we are all going around the Sun …

Neptune, Uranus and Pluto are up there too — BUT, not naked eye visible. OK?