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Some more planet posting
I wanted to illustrate some matters related to extrasolar planets and suchlike so here are a few more shots I took using Celestia yesterday. These are not, of course, actual photos and some of the information may be out of date. So don't go basing anything critical around this, okay?
The first shot is looking from earth toward a planet discovered by the transit method and its star, OGLE-TR-113:
You can't see it because it is 1,400 light years away and has an apparent magnitude of 14.66. The host star is smaller and dimmer than our sun, which is hardly the brightest of bulbs to begin with.
And with constellation lines and borders drawn in:
This is the star and its planet (with the orbit shown) from closer up.
From a third of the Earth-Sun distance in fact. Celestia automatically places you at a distance from the target star where it appears twice the size of our sun in the sky. You should be able to see that the orbit passes directly between OGLE-TR-113 and the solar system. That's how we were able to detect the planet.
Then I zoomed forward about 15 hours to when 'b' had completed almost half an orbit.
There it is, a big dot on the face of its sun, like a giant sunspot.
This is roughly how it would appear from the Earth, if Earth were transplanted to this system:
Three times as far from the star. Still see it? This is what a transit looks like from about 150,000,000 kilometres away. We are more like 288771000 times as distant.
This is what we see when we look back from OGLE-TR-113 in the direction of our home:
Sol is brighter than our host was, but still invisibly faint from this distance. Bright stars are labeled.
This shot shows the constellation borders you saw drawn against the sky earlier, this time from the outside:
That sphere is about twenty light years across. I checked while writing this post.
And just for fun, this is how the lines joining the stars in our constellations look from out there:
A bit difficult to recognise the shapes in that, now.
And here endeth the post
The first shot is looking from earth toward a planet discovered by the transit method and its star, OGLE-TR-113:
You can't see it because it is 1,400 light years away and has an apparent magnitude of 14.66. The host star is smaller and dimmer than our sun, which is hardly the brightest of bulbs to begin with.
And with constellation lines and borders drawn in:
This is the star and its planet (with the orbit shown) from closer up.
From a third of the Earth-Sun distance in fact. Celestia automatically places you at a distance from the target star where it appears twice the size of our sun in the sky. You should be able to see that the orbit passes directly between OGLE-TR-113 and the solar system. That's how we were able to detect the planet.
Then I zoomed forward about 15 hours to when 'b' had completed almost half an orbit.
There it is, a big dot on the face of its sun, like a giant sunspot.
This is roughly how it would appear from the Earth, if Earth were transplanted to this system:
Three times as far from the star. Still see it? This is what a transit looks like from about 150,000,000 kilometres away. We are more like 288771000 times as distant.
This is what we see when we look back from OGLE-TR-113 in the direction of our home:
Sol is brighter than our host was, but still invisibly faint from this distance. Bright stars are labeled.
This shot shows the constellation borders you saw drawn against the sky earlier, this time from the outside:
That sphere is about twenty light years across. I checked while writing this post.
And just for fun, this is how the lines joining the stars in our constellations look from out there:
A bit difficult to recognise the shapes in that, now.
And here endeth the post