Tag Archives: brightness

Explosions Notwithstanding, Comet ISON, C/2012 S1, Will NOT Impact Earth, It Is NOT Nibiru.

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


Related posts:
>> Comet C/2012 X1 (LINEAR) explodes
>>Oct. 22, 2013.
>> ISON doing well, thank you …
>>Oct. 17, 2013.
>> Comet ISON book makes #1 …
>>July 23, 2013.


A recent report that there was a supposed ‘explosion’ on ISON, C/2012 S1, and then the report yesterday of C/2012 X1’s explosion, has again reignited the year-old mumbo-jumbo that ISON is Nibiru and it is set to destroy the Earth.

This is rank garbage.

The supposed ‘explosion’ on ISON was just a normal gas OUTBURST when a new vent opens up on the surface as it gets closer to the Sun. That is par for the course. Think ice-cube in microwave. It was NOT hit by a large asteroid — which, yes, could have changed its course. ISON’s course has not changed.

On November 2, 2013 as it first crosses the Earth’s orbital path it is going to be a long, long, long, long, long … long way away from Earth — like 1.2 TIMES the Earth-Sun distance! Yes, it is going to be 1.203 AU out. That is 111.8 MILLION MILES (and even further out in stupid Kms). So, no danger there.


Then we have perihelion on Thanksgiving Day.

5 scenarios of what can happen then.

It is after that, hopefully on Boxing Day, that we will have the closest fly-by.

But IF it survives perihelion ‘intact’ it will breeze by 39.9 MILLION MILES AWAY.

Check this.

Click to ENLARGE. From 'ISON for Kids'.

Click to ENLARGE. From ‘ISON for Kids’.

Will Exploding Comet C/2012 X1 (LINEAR), Coming Behind ISON, Will Beat 17P/Holmes To Be BIGGEST Object In Solar System?

Anura Guruge, June 8, 2013.Comets101Cover
..
.
by
Anura Guruge


Related posts:
>> Comet C/2012 X1 (LINEAR) explodes
>>Oct. 22, 2013.
>> ISON doing well, thank you …
>>Oct. 17, 2013.
>> Comet ISON book makes #1 …
>>July 23, 2013.


6.9 year periodic, 17P/Holmes snapped on November 2, 2007 when it was, for a time, the LARGEST known object in the Solar System eclipsing the Sun.

Astronomers are still trying to work out the details.

I have checked all of the obvious places, such as Minor Planet Center (MPC) and NASA. Nothing yet.

IF it overtakes 17P/Holmes to take the record for the LARGEST known object in the Solar System, even if it was only for a few days,
that would be cool.
See below.

I will be on the case.


Click to access ... Available as 99 cent Kindle.

Click to access … Available as 99 cent Kindle.

…..
I talked about the 17P/Holmes explosion as my #1 bullet in “Comets: 101 Facts & Trivia“.



Comet C/2012 X1 (LINEAR), Coming Behind ISON, Explodes — 100x Increase In Brightness.

Anura Guruge, June 8, 2013.Comets101Cover
..
.
by
Anura Guruge


Related posts:
>> ISON doing well, thank you …
>>Oct. 17, 2013.
>> Comet ISON book makes #1 …
>>July 23, 2013.


EXTRACT from ‘Spaceweather.com’.
Click to access original.

From 'spaceweather.com'. Click to access entire post ...

From ‘spaceweather.com’. Click to access entire post …


Click to access ... Available as 99 cent Kindle.

Click to access … Available as 99 cent Kindle.

…..
I talked about the 17P/Holmes explosion as my #1 bullet in “Comets: 101 Facts & Trivia“.


This ‘LINEAR’. C/2012 X1 was discovered after C/2012 S1 — i.e., ISON. ‘S’ vs. ‘X’. This ‘LINEAR’ (and there are a lot of comets discovered by LINEAR) is still in the asteroid belt. It will not make perihelion till February 21, 2014. So it is trailing ISON by 3 months.

Where it was today, per NASA JPL, when it exploded. Click to access JPL page.

Where it was today, per NASA JPL, when it exploded. Click to access JPL page.

This Weekends Much Hyped ‘Super Moon’ Is ‘Special’, But Not Earth Shattering. We Actually Have ‘3’, Yes ‘3’, In A Row!

Anura Guruge, June 8, 2013.

..
.
by
Anura Guruge


Related post:
>> March 2013 ‘Worm’ Full Moon over
>> Alton — Mar. 30, 2013.

++++ Check CATEGORY ‘Astronomy‘ on sidebar for other posts >>>>


The deal with a ‘Super Moon’ is that it is close to full (if not at full) and very close to Earth (if not at its closest).

Obviously we get a full moon each month, or to be precise each Lunar Month which is 27.322 days — rounded up to the ’28’ days that determine women’s cycles etc. So full moons, especially to Buddhists, are always ‘special’, but are really common or garden.

Being closest to Earth also happens each and every month — without fail. If it didn’t we would all be in a heap of trouble! Nearly all, if not all, solar system objects have non-circular orbits. Rather than circular the orbits that nearly everything falls into is an elliptical orbit — i.e., an elongated orbit. The degree of this elongation is referred to as Orbital Eccentricity, ‘0’ denoting a perfect circle and ‘1’ a parabolic (i.e., football shaped) orbit. Closer to ‘0’, the more circular, closer to ‘1’ the more elongated. Most of the planets have near-circular orbits, though they are not circular. Earth’s eccentricity is 0.0167. Mercury has the most elongated orbit at 0.2056, with Pluto, now a dwarf planet, having one of 0.248. Comets, which originate at the furthest edges of the solar system have very high eccentricity, Comet ISON, C/2012 S1 (ISON), having an eccentricity close to ‘1’!

The Moon’s eccentricity is 0.054906.

Here are some cute diagrams from ‘Google’ that will explain this whole notion of elliptical orbits, perigee and apogee. [When talking of orbits around the Sun the comparable terms used are ‘perihelion’ (closest) and ‘aphelion’ (furthest).

How the orbits of comets, in this case periodics which are NOT as elongated as long-term comets, compare in terms of the gas giants.

The Moon’s distance at perigee (which varies slightly from month to month due to some complicated precession motions) varies between 221,324.4 miles to 230,018.4 miles, the average 225,670 miles.

The apogee, on average, is at 252,088 miles.

So this weekend we get both a full moon and one that is at apogee — these two events happening very close together tomorrow morning between 7:11 am and 7:33 am in the Southern sky (very close to the horizon) over New Hampshire. I will be asleep. It will be quite spectacular tonight too. 

But, to be fair we had a Super Moon in May and another one in July — those the in both those cases the perigee was within 90% of closest as opposed to 100%. That is why tomorrow’s is more ‘special’ than most.

On AVERAGE we get 2 to 3 Super Moons each year — keyword here being ‘average’.

This weekend the brightness of the moon, measured per the confusing apparent magnitude scale which goes backwards [i.e., less NEGATIVE the brighter], will be ~ ‘-12.xx’. The maximum brightness of the full moon is -12.92; the average -12.74.

A real picture of the Moon orbiting the Earth taken by NASA robotic spacecraft ‘Deep Impact’, in 2005, from 30 million miles away.