Tag Archive | great comet

C/2020 F3 (NEOWISE) Is Becoming INCREASINGLY Tantalizing; Possibly EVENINGS In The Northern Hempisphere.

by Anura Guruge


Click image to access v. detailed post from ‘space.com’.


Click to ENLARGE. From above LINK.


So far, so good. Looks real promising. It has ALREADY rounded the Sun (last week). So, that danger is out of the way.

Looking increasingly tantalizing. They are even speculating ‘GREAT‘. Wow. Evening sky visibility is the key. Dawn doesn’t cut it.

A few more days to go. I will keep you posted, as I already have. SMILE.


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by Anura Guruge

Comet C/2020 F8 (SWAN) Steps In As Naked-Eye Candidate C/2019 Y4 (ATLAS) Fizzles.

by Anura Guruge


Click to ENLARGE.


A brand new comet, discovered in March 2020 — hence the ‘2020 F’ (6th half-month of 2020).

SWAN denotes that it was found by the Solar Wind ANisotropies (SWAN) instrument of the SOHO spacecraft studying the Sun.

Its perihelion date is May 27, 2020.

It could become naked-eye visible in a few weeks. I will keep YOU posted. Promise.


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by Anura Guruge

Comet C/2019 Y4 (ATLAS) Unlikely To NOW Be Naked-Eye — It Is Breaking Up.

by Anura Guruge


Click to ENLARGE.


SHAME.

But, I did say, very clearly — DO NOT GET YOUR HOPES UP.

I was hoping. I would have liked to have seen another naked-eye comet. The last was 23-years ago! That is too long.

There is a WHOLE generation, in the Northern Hemisphere, that have never seen a naked-eye comet. (Yes, there have been a FEW in the Southern Hemisphere.)

That it started breaking up this far from the Sun is incongruous. But, it is travelling at breakneck speeds, getting faster by the second.

Well, that was THAT. SMILE.

Wait for another.

Waited 7-years for this.


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by Anura Guruge

‘COVID-19 Comet’ The Nickname For C/2019 Y4 (ATLAS) Which Could Light Up The Skies In May — As The Virus …

by Anura Guruge


Covid-19 Comet virus Anura Guruge

Click to ENLARGE.


Click to ENLARGE and read here. Wikipedia: en.wikipedia.org/wiki/C/2019_Y4_(ATLAS)


It is common to give major comets nicknames based on when they will make their appearance. So, we have had: ‘great March comet‘, ‘Christmas comet‘, ‘Thanksgiving comet‘ etc.

Well, the expectation is that C/2019 Y4 (ATLAS) will start to peak around May 2020. That will also be when COVID-19 is really making its mark in the U.S.

With luck, the ‘COVID-19 Comet‘ will be a distraction. A heavenly sign that things are coming to an end.

Whatever, there is no other apropos name for this comet, C/2019 Y4 (ATLAS). It has to be the COVID-19 Comet.


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by Anura Guruge

ANOTHER Possible Naked Eye Visible Comet, C/2019 Y4 (ATLAS) — But Let Us Not Get Hopes Up.

by Anura Guruge


Click to ENLARGE.


Click to ENLARGE and read here. Wikipedia: en.wikipedia.org/wiki/C/2019_Y4_(ATLAS)


This comet looks promising BUT when it comes to comet so many let you down badly. Remember, remember my great comet, C/2012 S1 (ISON). See one of my diagrams below.

We have had a couple more since that failed to deliver on their promise.

C/2019 Y4 is currently around the orbit of Mars.

In a month’s time it will be getting close to us as the top diagram shows.

I will keep you posted. Promise.

If you are interested in comets check my COMET book (below) and here.


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


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by Anura Guruge

How To See Christmas Comet, 46P/Wirtanen, In New Hampshire — Around December 16, 2018.

by Anura Guruge


Click to ENLARGE.


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


It is expected to be just naked eye visible. Will definitely be able to see it with binoculars — and, of course, a telescope, even a small one. It will be a green fuzzy ball. There will be NO TAIL per se. So, don’t be looking for the tail. Just a fuzzy, glowing green ball. The green ball should be fairly big — bigger than a star.

For us in New England, the easiest bearing is going to be the easy to locate ‘winter cluster’ — Pleiades (the seven sisters). See the chart above.


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by Anura Guruge

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.


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by Anura Guruge

Christmas Comet Of 2018 — 46P/Wirtanen — MIGHT NOT Be Naked Eye Visible.

by Anura Guruge



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


I have been keeping an eye on it as promised.

Touch-and-go right now. Teetering right on the edge of naked eye visibility — and even that means you are not going to be able to see it unless you have no ambient light. So forget seeing it from a city.

Alas. I am bummed for ALL of us.

But, I will keep on checking and let you know. OK?

Keep fingers, toes, and MOST OF ALL your eyes, crossed. That helps.


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by Anura Guruge

Christmas Comet Of 2018 — 46P/Wirtanen.

by Anura Guruge


Click to ENLARGE and read here. Wikipedia: en.wikipedia.org/wiki/46P/Wirtanen


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


It will NOT be spectacular, and it is definitely not a great comet, BUT, it is expected to be naked eye visible and it will be — WITHOUT FAIL — appear the week before Christmas 2018. It is Periodic Comet with a 5.4 year orbital period. So, it is a well known comet and one that is not going to fizzle away as did MY comet ISON in 2013.

This is just the initial heads-up. I just found out about it today. I will keep you posted. Promise.

Just mark it on your calendar. December 16, 2018 — COMET!

Exciting. We haven’t had a decent naked eye visible comet in DECADES!


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by Anura Guruge

A Naked Eye Visible Comet, FINALLY, 21P/Giacobini–Zinner — In September 2018.

by Anura Guruge


Click to ENLARGE and read here. Wikipedia: en.wikipedia.org/wiki/21P/Giacobini–Zinner


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


It will NOT be spectacular, and it is definitely not a great comet, BUT, if it is naked eye visible, it, with its green tinge (due to its chemical composition), should be quite the sight up there. We have not see a decent comet since the mid-1980s. Comet ISON, on which I expended considerable time and energy, vaporized when it got too close to the Sun.

No such danger with 21P/Giacobini–Zinner. This is not a sungrazer.

The ‘P’ in the 21P denotes that it is a periodic comet; i.e., a comet that has made at least 2 well observed orbits around the Sun. Actually 21P orbits the Sun every 6 years. It is very periodic. It doesn’t go too far away. Just beyond the orbit of Jupiter. It is well known and well studied comet that was discovered in 1900.

I will keep you posted. I was excited to hear that it might be naked eye visible. Wow.


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by Anura Guruge

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