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The Rare Exoplanet with a Double Sunset
Discovery News ^
| Thursday, October 21, 2010
| Ian O'Neill
Posted on 10/24/2010 8:14:07 PM PDT by SunkenCiv
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How a double sunset might look on the surface of an exoplanet in a binary system (NASA/JPL)
1
posted on
10/24/2010 8:14:09 PM PDT
by
SunkenCiv
To: KevinDavis; annie laurie; garbageseeker; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; ...
2
posted on
10/24/2010 8:14:50 PM PDT
by
SunkenCiv
(The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
To: 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; BBell; ...
But the very existence of Inrakluk has called into question our understanding about how planetary systems form.
tee hee.
3
posted on
10/24/2010 8:16:57 PM PDT
by
SunkenCiv
(The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
To: SunkenCiv
4
posted on
10/24/2010 8:17:58 PM PDT
by
Ciexyz
To: SunkenCiv
i would of thought two stars of that size and that proximity would have to merge...
5
posted on
10/24/2010 8:19:31 PM PDT
by
Chode
(American Hedonist *DTOM* -ww- NO Pity for the LAZY)
To: SunkenCiv
Shades of Star Wars and Tatooine.
6
posted on
10/24/2010 8:19:57 PM PDT
by
Ciexyz
To: SunkenCiv
Reminds me of my favorite Sci-Fy book: NIGHTFALL
NightfallOne of the all-time great sci-fy books.
7
posted on
10/24/2010 8:27:44 PM PDT
by
devane617
(November!)
To: SunkenCiv; KevinDavis
8
posted on
10/24/2010 8:32:02 PM PDT
by
GeronL
(http://libertyfic.proboards.com <--- My Fiction/ Science Fiction Board)
To: SunkenCiv
which star does it orbit?
9
posted on
10/24/2010 8:33:22 PM PDT
by
GeronL
(http://libertyfic.proboards.com <--- My Fiction/ Science Fiction Board)
To: devane617
10
posted on
10/24/2010 8:33:51 PM PDT
by
GeronL
(http://libertyfic.proboards.com <--- My Fiction/ Science Fiction Board)
To: devane617
Or one of my great-uncle Neil's books:
11
posted on
10/24/2010 8:38:34 PM PDT
by
To Hell With Poverty
(The War on Poverty is over. Poverty won. - Howie Carr)
To: To Hell With Poverty
I wish! I love sci-fi and always have. Once hooked there is no cheating.
12
posted on
10/24/2010 8:40:54 PM PDT
by
devane617
(November!)
To: GeronL
The correct answer is that it orbits the barycentric point of the entire system.
That’ll be 20 dollars.
To: GeronL
14
posted on
10/24/2010 8:58:56 PM PDT
by
rdl6989
(January 20, 2013- The end of an error.)
To: rdl6989; BenKenobi
How would that work exactly, a figure 8 orbit?
15
posted on
10/24/2010 9:13:56 PM PDT
by
GeronL
(http://libertyfic.proboards.com <--- My Fiction/ Science Fiction Board)
To: GeronL
As the mass of the third object the Jupiter size planet is negligible, the easiest way to understand the problem is to treat it as a two body problem, where you have the entire mass of the two suns centred at the barycenter, and the planet orbiting around both of them.
How do I know this? Both suns are on the same side, and very close to one another. In a figure 8, which is a restricted but possible solution, you’d see sunsets and sunrises on opposite sides of the sky, as the planet would pass between the stars.
http://faculty.ifmo.ru/butikov/ManyBody.pdf
Read this to get a better idea of the different ‘classes’ of possible orbits.
To: BenKenobi
That’ll be another 20 dollars.
To: BenKenobi
So it's a figure 8?
It's pretty cheeky to be demanding payment when you haven't answered the question.
To: Kennard
Check out the PDF link.
A figure 8 is one of many possibilities of ‘restricted’ orbit values.
The most common orbit is to have the planet orbiting well outside of both stars.
To: Kennard
He answered it in post 13. The planet will orbit the point around which both stars also orbit. Since the two stars are fairly close together, the planet will orbit outside both of them, and will have a fairly eccentric orbit. If the stars are widely separated, a figure-8 is possible, though very unlikely.
20
posted on
10/24/2010 9:50:18 PM PDT
by
Little Pig
(Vi Veri Veniversum Vivus Vici.)
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