01-20-2016, 09:36 PM
(This post was last modified: 01-20-2016, 11:01 PM by Parsons.
Edit Reason: added more info
)
I'm at work so some of your links are blocked; I will have to take a look at them later.
This link is not blocked:
The star they are talking about may have been created from the same cloud of dust that our system was. They are not referring to a binary star system. Their concept of a "solar sibling" is a totally different concept.
It is very far away when compared to this new planet they are referring to in the OP. The planet from the OP is 200-1200 AU / 0.0031625 light years away, while the star they are referring to is 6.957e+6AU / 110 light years away. We are basically comparing milometers to kilometers in terms of relative distance.
Actually, they directly state in the article I linked that it can't be a star:
This link is not blocked:
(01-20-2016, 08:31 PM)BlatzAdict Wrote: http://www.kurzweilai.net/astronomers-fi...bling-star another.
The star they are talking about may have been created from the same cloud of dust that our system was. They are not referring to a binary star system. Their concept of a "solar sibling" is a totally different concept.
Quote:The solar sibling his team identified is called HD 162826, a star 15 percent more massive than the sun, located 110 light-years away in the constellation Hercules. The star is not visible to the unaided eye but can be seen with low-power binoculars, not far from the bright star Vega.
It is very far away when compared to this new planet they are referring to in the OP. The planet from the OP is 200-1200 AU / 0.0031625 light years away, while the star they are referring to is 6.957e+6AU / 110 light years away. We are basically comparing milometers to kilometers in terms of relative distance.
Actually, they directly state in the article I linked that it can't be a star:
Quote:Brown got his first inkling of his current quarry in 2003, when he led a team that found Sedna, an object a bit smaller than both Eris and Pluto. Sedna’s odd, far-flung orbit made it the most distant known object in the solar system at the time. Its perihelion, or closest point to the sun, lay at 76 AU, beyond the Kuiper belt and far outside the influence of Neptune’s gravity. The implication was clear: Something massive, well beyond Neptune, must have pulled Sedna into its distant orbit.
That something didn’t have to be a planet. Sedna’s gravitational nudge could have come from a passing star, or from one of the many other stellar nurseries that surrounded the nascent sun at the time of the solar system’s formation.
Since then, a handful of other icy objects have turned up in similar orbits. By combining Sedna with five other weirdos, Brown says he has ruled out stars as the unseen influence: Only a planet could explain such strange orbits.