This could very well be Dysnomia, the Moon which surrounds Eris?!
is Eris supposed to be *that close* to the Sun?
OTOH, the object in the various pictures from NASA shows that it may possibly have a "companion", probably a "moon" of some kind, because it shows up in more than one picture.
I believe you got an important point.
Quoting: Anonymous Coward 716601
Interesting.
Eris is the Goddess of arguments, her sign is the golden apple of the Hesperides
.... Do not forget that it's orbit is eliptic and therefore, that your calculations of speed cannot be based on those images.
........................................................
ah, OK. it'll accelerate a little and probably cross the picture faster... *if* it's Mercure, eh?
....................................................... Might accelerate a little bit, but I doubt we'd notice it.
The reason it's moving more slowly than I'd forecast is that the picture is a lot bigger than I thought it was. Noticed it last night. I'd thought the central black region was the Sun - in fact, the Sun is the small white circle inside that black area. It's maybe sixteen Sun-widths across, not five. So where I estimated 51 hours for five Sun-widths, it should have been more like 163 hours.
So, corrected forecast if it's Mercury: it'll take nearly a week to cross all the way from the right, pass behind the Sun and reach the left edge of the screen. Might be a little faster because STEREO is also moving, but its orbit is far slower than Mercury's and I don't think it'll make much difference.
Well in this case we agree on the time the object will take to cross the picture. I've made a (rough) average over the movements on the various pictures and obtained approx. 158 hours.
Then, I guess the movement of the object is compatible with the expected movement of Mercury.
If this object is 16 times the size of the sun that only means one thing--EXTERMINATION
Whenever the site is fully operational again, search around may 19th give or take a few days and you'll see mercury again, only closer to the camera than it is here. It will look similar to this image of mercury from stereo ahead:
[link to stereo-ssc.nascom.nasa.gov]
Quoting: Anonymous Coward 634208
The Mercury in the above picture looks more circularly symmetric than the objects in the following pictures,
If this object is 16 times the size of the sun that only means one thing--EXTERMINATION
Quoting: defender 704343
No, no... the object itself isn't 16 times the size of the Sun. The width of the picture is 16 times the width of the Sun.
Knowing the width of the picture, the size of the Sun, the distance to the Sun, and the distance from there to Mercury, you can work out with a bit of geometry how far Mercury has to go to move all the way across (assuming it _is_ Mercury).
But since I'd misunderstood the scale of things, I'd computed two days based on the picture being five Sun-widths wide. Instead, the picture is about 16 Sun-widths across, so it's going to take about a week.
It's an image of ERIS!!!
...........................................
OTOH, the object in the various pictures from NASA shows that it may possibly have a "companion", probably a "moon" of some kind, because it shows up in more than one picture.
I believe you got an important point.
......................................... Interesting.
Eris is the Goddess of arguments, her sign is the golden apple of the Hesperides
We're looking from STEREO-B, the blue dot, which trails behind the Earth on its orbit around the Sun. SOHO orbits alongside the Earth, directly between us and the Sun. And STEREO-A, the red dot, orbits ahead of us.
From STEREO-B's perspective, Mercury is behind and just a little to the right of the Sun. From SOHO and from STEREO-A, Mercury is nowhere near.
Why Venus doesn't show up in STEREO-A is a bit of a puzzle here. I've looked on Celestia using the orbital data I posted earlier, and Venus appears even further right than Mercury, and a long way below. I think it's a perspective thing: Venus is so much closer to STEREO-A that a small absolute deviation from the straight line to the Sun becomes a large angular separation.
And since the NASA chart is, well... a bit crap, to be honest, not to mention several days old, I've produced my own in Celestia. Not sure why it doesn't show an actual dot for the satellites; maybe it's the zoom level. They're where the letter 'S' just clips the grey orbital path.
STEREO A and STEREO B sit at L4 and L5, 60 degrees ahead and 60 degrees behind Earth on the same orbital path... monitoring the Sun.
They were put there to get a better angle on Solar activity, and as such, have a much different viewpoint.
SOHO, which proceeded them, sits at L1. It also watches the Sun, and has a different viewpoint. As mentioned earlier in this thread, SOHO is directly between the Earth and the Sun.
These Lagrange points are relatively stable areas of the Earth-Sun system and a satellite can sit there for years doing a slow Halo orbit about that Lagrange point with very little fuel usage.
When the STEREO spacecraft first arrived at the L4 and L5 points, one of the things they did was to look around for asteroids. Jupiter and Mars both have asteroids in their L4 and L5 spots, these are called Trojan asteroids. There has been some conjecture about the Earth having Trojan companions. From what I understand, they didn't find any.
Last Edited by LURKING on 7/2/2009 at 8:26 PM "The Truth is so valuable that it must be protected with a bodyguard of lies"
Winston Churchill
Punted from GLP for the last time by unresponsive mods. Have gone to greener pastures where there is more professionalism.
Planet sized unknown object is quickly approaching the Sun. The object in question can clearly be seen in the Stereo Behind COR 2 imagery . At this time the course of this object will pass dangerously close to or will actually hit the Sun around the equator . This is not a charted object and is not a planet .
I'd like to know why it shows on STEREO, but no on SOHO?
Quoting: Anonymous Coward 598066
Yeah. Where is it on SOHO?
Quoting: Callion 398839
according to the OP if the object belongs to this new class of comets it would be seen by STEREO but not by SOHO<
Comet C/2009 G1 could not be seen by Soho either . That is why it was known as a Stereo Comet and it did not belong to any of the Comet family groups that belong to SOHO the typical ones SOHO Kreutz-group,SOHO Non-Kreutz . So some objects can not be seen by SOHO perhaps because the size or the angle they are moving in at just as Comet C/2009 G1 was
ya so its half way there. which is cool mercury's orbit goes past the sun right? is mercury supposed to be passing behind or in front of the sun from stereo B perspective? cause if its behind shouldn't it be much smaller?
anyways... if in the very off chance that the doom is real, is there anything we can do to help survive it aside from getting some heavy duty tan lotion and locking ourselfs in the closet?
hahahah this thread has more morons than a kelly clarkson concert.
ITS MERCURY IDIOTS, MERCURY!
In the rare instance that I think there may actually be intelligent people on these forums, you retards have to extend this thread to 30 pages when its already been 100% proven beyond ANY DOUBT, thats its f**king MERCURY.
hahahah this thread has more morons than a kelly clarkson concert.
ITS MERCURY IDIOTS, MERCURY!
In the rare instance that I think there may actually be intelligent people on these forums, you retards have to extend this thread to 30 pages when its already been 100% proven beyond ANY DOUBT, thats its f**king MERCURY.
GOD D*MN F**KING RETARDS
Quoting: Anonymous Coward 716159
Tisk tisk...where is your sense of adventure? Excelsior! We gladly feast on those who would subdue us.
Interesting that the OP just post some 6-7 times, the last one on pg5 about SOHO, and just left.
He seemed pretty sure that it is none of the normal charted celestial objects. He gave his reasons and left, probably because he believes that to argue about something that is essentially an observable fact (if something "out there" is a comet or not) will not really bring the solution of the problem.
It's an experimental problem not a theoretical one.
If it's not Mercury then Mercury will probably show up on July 6th and the object will still be visible then.
I guess all we can do is to wait and see what happens.
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