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Comet Lovejoy survives perihelion!

 
Anonymous Coward
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12/14/2011 12:18 PM
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Re: Comet Lovejoy survives perihelion!
At this point most Sundivers are barely visible on Soho. This thing is Huge!

Remember this comet from a couple of months ago, oh how we forget.
RTS REDUX  (OP)

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12/14/2011 12:29 PM
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Re: Comet Lovejoy survives perihelion!
1500UT SG update

[...]this is, without any doubt, the brightest sungrazing comet that SOHO has ever seen

[...]If Comet Lovejoy gets as bright as mag -4 or -5, there is a tiny but non-zero chance that it could be visible in the sky next to the Sun by simply blocking the Sun out behind a tall building, for example. (Important: Do NOT point a telescope or binoculars at, or near, the Sun! It can and will badly damage your eyesight.) It will be reaching perihelion right around sunset time for people in the US East, Central, Mountain, and Pacific time zones, so if you have one of those nice sunsets where you can actually look right at the Sun, be on the watch for the comet on the left of the Sun (for northern hemisphere observers).

[link to sungrazer.nrl.navy.mil]
Anonymous Coward
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12/14/2011 12:40 PM
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Re: Comet Lovejoy survives perihelion!
I think it could knock the sun out of earth's orbit. This could be the big one, fokes.
 Quoting: Anonymous Coward 1634599


Knock the sun out of the EARTH'S orbit! This is your brain on CRACK!
Anonymous Coward
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12/14/2011 01:26 PM
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Re: Comet Lovejoy survives perihelion!
New International Version (©1984)
The fourth angel poured out his bowl on the sun, and the sun was given power to scorch people with fire.
Anonymous Coward
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12/14/2011 01:38 PM
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Re: Comet Lovejoy survives perihelion!
Latest LASCO C3 Movie CloseUP Helioviewer:
[link to helioviewer.org]
Anonymous Coward
User ID: 1297814
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12/14/2011 01:47 PM
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Re: Comet Lovejoy survives perihelion!
another Update on SungrazingComets:

1830UT: Here's an updated image of Comet Lovejoy in SECCHI HI-1B (click for larger). Notice the increasing tail dynamics due to the solar wind flowing over the comet.

And now I have time for another data dump! I'm not going to post a link to the LASCO data as that is already easily available in a couple of locations. Here is some more SECCHI data though, which is still harder to find. I'm also going to throw in some processed files as I know some folks aren't used to using DS9 and/or FITS images, and may not have the time or software to process their own. So here's what I have. You would be well-advised to right-click these links to save the files to your computer...

ReadMore:
[link to sungrazer.nrl.navy.mil]
RTS REDUX  (OP)

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12/14/2011 02:11 PM
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Re: Comet Lovejoy survives perihelion!


[link to www.youtube.com]



[link to www.youtube.com]
Anonymous Coward
User ID: 1356782
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12/14/2011 03:01 PM
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Re: Comet Lovejoy survives perihelion!
1500UT SG update

[...]this is, without any doubt, the brightest sungrazing comet that SOHO has ever seen

[...]If Comet Lovejoy gets as bright as mag -4 or -5, there is a tiny but non-zero chance that it could be visible in the sky next to the Sun by simply blocking the Sun out behind a tall building, for example. (Important: Do NOT point a telescope or binoculars at, or near, the Sun! It can and will badly damage your eyesight.) It will be reaching perihelion right around sunset time for people in the US East, Central, Mountain, and Pacific time zones, so if you have one of those nice sunsets where you can actually look right at the Sun, be on the watch for the comet on the left of the Sun (for northern hemisphere observers).

[link to sungrazer.nrl.navy.mil]
 Quoting: RTS REDUX


The latest updates show another companion comet and Lovejoy forming its own saturation line
RTS REDUX  (OP)

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12/14/2011 03:03 PM
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Re: Comet Lovejoy survives perihelion!
1500UT SG update

[...]this is, without any doubt, the brightest sungrazing comet that SOHO has ever seen

[...]If Comet Lovejoy gets as bright as mag -4 or -5, there is a tiny but non-zero chance that it could be visible in the sky next to the Sun by simply blocking the Sun out behind a tall building, for example. (Important: Do NOT point a telescope or binoculars at, or near, the Sun! It can and will badly damage your eyesight.) It will be reaching perihelion right around sunset time for people in the US East, Central, Mountain, and Pacific time zones, so if you have one of those nice sunsets where you can actually look right at the Sun, be on the watch for the comet on the left of the Sun (for northern hemisphere observers).

[link to sungrazer.nrl.navy.mil]
 Quoting: RTS REDUX


The latest updates show another companion comet and Lovejoy forming its own saturation line
 Quoting: Intruth


yea I saw that..I enlarged that pic and am waiting on mod approval
Anti-GLP Effect

User ID: 6569151
Philippines
12/14/2011 03:07 PM

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Re: Comet Lovejoy survives perihelion!
1500UT SG update

[...]this is, without any doubt, the brightest sungrazing comet that SOHO has ever seen

[...]If Comet Lovejoy gets as bright as mag -4 or -5, there is a tiny but non-zero chance that it could be visible in the sky next to the Sun by simply blocking the Sun out behind a tall building, for example. (Important: Do NOT point a telescope or binoculars at, or near, the Sun! It can and will badly damage your eyesight.) It will be reaching perihelion right around sunset time for people in the US East, Central, Mountain, and Pacific time zones, so if you have one of those nice sunsets where you can actually look right at the Sun, be on the watch for the comet on the left of the Sun (for northern hemisphere observers).

[link to sungrazer.nrl.navy.mil]
 Quoting: RTS REDUX


The latest updates show another companion comet and Lovejoy forming its own saturation line
 Quoting: Intruth


alien11
So I have written it, so it shall be done! [link to www.youtube.com (secure)]
RTS REDUX  (OP)

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12/14/2011 03:23 PM
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Re: Comet Lovejoy survives perihelion!
1500UT SG update

[...]this is, without any doubt, the brightest sungrazing comet that SOHO has ever seen

[...]If Comet Lovejoy gets as bright as mag -4 or -5, there is a tiny but non-zero chance that it could be visible in the sky next to the Sun by simply blocking the Sun out behind a tall building, for example. (Important: Do NOT point a telescope or binoculars at, or near, the Sun! It can and will badly damage your eyesight.) It will be reaching perihelion right around sunset time for people in the US East, Central, Mountain, and Pacific time zones, so if you have one of those nice sunsets where you can actually look right at the Sun, be on the watch for the comet on the left of the Sun (for northern hemisphere observers).

[link to sungrazer.nrl.navy.mil]
 Quoting: RTS REDUX


The latest updates show another companion comet and Lovejoy forming its own saturation line
 Quoting: Intruth


yea I saw that..I enlarged that pic and am waiting on mod approval
 Quoting: RTS REDUX


here it is for reference..I couldn't see it at first just by looking at the gif

ljcompanioncomet
RTS REDUX  (OP)

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12/14/2011 04:09 PM
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Re: Comet Lovejoy survives perihelion!
here's the latest no-color image from LASCO..

1632B&W

Last Edited by RTS REDUX on 12/14/2011 08:07 PM
Anonymous Coward
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12/14/2011 04:24 PM
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Re: Comet Lovejoy survives perihelion!
:latestlascoc3163:





[link to www.youtube.com]




[link to www.youtube.com]


Latest StereoBehind HI1 Movie:
[link to stereo.gsfc.nasa.gov]


Latest Stereo Ahead HI1 Movie:

[link to stereo.gsfc.nasa.gov]



Latest LASCO C3 Helioviewer:
[link to helioviewer.org]

Sungrazing Comets:
1900UT: This is too cute: Comet Lovejoy has a friend! Look in the upper-half of the animation opposite, starting at center and moving diagonally up and to the left, perfectly in step with Lovejoy... It's another Kreutz-group comet! (if you can't see it, here's a hint)..



So what is this new comet called? Is it another "Comet Lovejoy"? Sadly not. It looks to me like it was actually spotted in the LASCO C3 images by seasoned comet hunter Zhijian Xu at Dec 14 2011 11:48:48. So will it be Comet Xu?? No again....


1950UT: Friend of mine, and expert SOHO comet researcher, Dr. Matthew Knight (Lowell Observatory/JHU-APL) has just sent me some of his preliminary photometry calculations for Comet Lovejoy in the LASCO C3 images....

[link to sungrazer.nrl.navy.mil]
RTS REDUX  (OP)

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12/14/2011 04:36 PM
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Re: Comet Lovejoy survives perihelion!
the last update was 5 hours ago..it's now about 21:35 UT
Anonymous Coward
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12/14/2011 04:38 PM
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Re: Comet Lovejoy survives perihelion!
the last update was 5 hours ago..it's now about 21:35 UT
 Quoting: RTS REDUX


yep, and?
VAEROSPACE

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12/14/2011 04:45 PM
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Re: Comet Lovejoy survives perihelion!
what is happening ...
RTS REDUX  (OP)

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12/14/2011 04:54 PM
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Re: Comet Lovejoy survives perihelion!
the last update was 5 hours ago..it's now about 21:35 UT
 Quoting: RTS REDUX


yep, and?
 Quoting: IwantToBelieve76


they said the image updates would only be updated five times an hour..not once every 5 hours

I'm pretty sure that's normal for SOHO but I was just wondering when to expect it to enter the C2 field of view

I'm guessing another 12+ hours?
Anonymous Coward
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12/14/2011 04:56 PM
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Re: Comet Lovejoy survives perihelion!
the last update was 5 hours ago..it's now about 21:35 UT
 Quoting: RTS REDUX


yep, and?
 Quoting: IwantToBelieve76


they said the image updates would only be updated five times an hour..not once every 5 hours

I'm pretty sure that's normal for SOHO but I was just wondering when to expect it to enter the C2 field of view

I'm guessing another 12+ hours?
 Quoting: RTS REDUX


well, i heard it will be visible on dec15...on C2

for me (germany) only one hour to go^^
RTS REDUX  (OP)

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12/14/2011 06:50 PM
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Re: Comet Lovejoy survives perihelion!
the last update was 5 hours ago..it's now about 21:35 UT
 Quoting: RTS REDUX


yep, and?
 Quoting: IwantToBelieve76


they said the image updates would only be updated five times an hour..not once every 5 hours

I'm pretty sure that's normal for SOHO but I was just wondering when to expect it to enter the C2 field of view

I'm guessing another 12+ hours?
 Quoting: RTS REDUX


well, i heard it will be visible on dec15...on C2

for me (germany) only one hour to go^^
 Quoting: IwantToBelieve76


I meant LASCO C2 not SECCHI COR2..

LASCO C3 just updated btw..been waiting on the mods for the past 20 minutes to approve the pic
Anonymous Coward
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12/14/2011 06:54 PM
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Re: Comet Lovejoy survives perihelion!
Latest LascoC3 MOVIE (22:18):

[link to sohowww.nascom.nasa.gov]


and latest IMG 23:18:

[link to sohowww.nascom.nasa.gov]

Sungrazing Comets reports

"Can definitely see saturation in the coma of Comet Lovejoy now, putting it close to mag 1 brightness"

[link to twitter.com]


yep i mean LASCO C2 too OP..im not a fresh noob on this^^
Anonymous Coward
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12/14/2011 07:00 PM
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Re: Comet Lovejoy survives perihelion!
Latest LascoC3 MOVIE (22:18):

[link to sohowww.nascom.nasa.gov]


and latest IMG 23:18:

[link to sohowww.nascom.nasa.gov]

Sungrazing Comets reports

"Can definitely see saturation in the coma of Comet Lovejoy now, putting it close to mag 1 brightness"

[link to twitter.com]


yep i mean LASCO C2 too OP..im not a fresh noob on this^^
 Quoting: IwantToBelieve76


It looks bigger than earth.
Anyone have a size estimate on the coma?
RTS REDUX  (OP)

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12/14/2011 07:11 PM
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Re: Comet Lovejoy survives perihelion!
Latest LascoC3 MOVIE (22:18):

[link to sohowww.nascom.nasa.gov]


and latest IMG 23:18:

[link to sohowww.nascom.nasa.gov]

Sungrazing Comets reports

"Can definitely see saturation in the coma of Comet Lovejoy now, putting it close to mag 1 brightness"

[link to twitter.com]


yep i mean LASCO C2 too OP..im not a fresh noob on this^^
 Quoting: IwantToBelieve76


Sorry bout that.. chuckle

I thought you might have been thinking about COR2 which was supposed to start picking it up about 00 UT today if I'm not mistaken according to sungrazers

oh well at least SOHO is starting to do updates about every twelve minutes or so which is good..

[link to sohodata.nascom.nasa.gov]
Anonymous Coward
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12/14/2011 07:15 PM
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Re: Comet Lovejoy survives perihelion!
I measured the coma to be 1/4 the diameter of the sun
Anonymous Coward
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12/14/2011 07:24 PM
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Re: Comet Lovejoy survives perihelion!
So if the sun is 865,000 miles in diameter, That would make the comet around 220,000 miles in diameter.
Its still growing

The Earth is 7920 miles in diameter
Anonymous Coward
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12/14/2011 07:24 PM
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Re: Comet Lovejoy survives perihelion!

Latest LascoC3 MOVIE (22:18):

[link to sohowww.nascom.nasa.gov]


:Lascoc32318:



and latest IMG 23:18:

[link to sohowww.nascom.nasa.gov]

Sungrazing Comets reports

"Can definitely see saturation in the coma of Comet Lovejoy now, putting it close to mag 1 brightness"

[link to twitter.com]


first :P^^
Anonymous Coward
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12/14/2011 07:38 PM
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Re: Comet Lovejoy survives perihelion!
This chart was posted on page 2 of this thread. It shows the Mag is to exceed -12

[link to cmpdtb.kommet.cz]
RTS REDUX  (OP)

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12/14/2011 07:44 PM
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Re: Comet Lovejoy survives perihelion!
This chart was posted on page 2 of this thread. It shows the Mag is to exceed -12

[link to cmpdtb.kommet.cz]
 Quoting: Intruth


the brightness of a full moon is -13

the planet Venus is a -4

[link to www.icq.eps.harvard.edu]
Anonymous Coward
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12/14/2011 07:46 PM
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Re: Comet Lovejoy survives perihelion!
created new closeup with helioviewer




[link to www.youtube.com]
Anonymous Coward
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12/14/2011 08:39 PM
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Re: Comet Lovejoy survives perihelion!
I was doing some figuring and if that comet was right now passing between the earth and the moon, The edges of the coma would be touching both.
Too Dark Park

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12/14/2011 09:13 PM
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Re: Comet Lovejoy survives perihelion!
Ooooh Im excited :D



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