Tyche - Hipotetical planet

[luki1997a]

Hello everybody!
What do you think about Tyche? It's 4 times bigger than Jupiter, probably it's a red dwarf but nobody has seen that before. Will it be classfied to be 9'th planet of solar system?

Waiting for your answers:thumbup:

 

[Jarvitä]

Hello everybody!
What do you think about Tyche? It's 4 times bigger than Jupiter, probably it's a red dwarf but nobody has seen that before. Will it be classfied to be 9'th planet of solar system?

Waiting for your answers:thumbup:

Even if it exists, 4 times Jupiter mass isn't even enough for a brown dwarf. There just isn't sufficient pressure for sustained fusion.

Other than that, I doubt it. Astronomers have been looking for the fifth gas giant since forever, and they've always been proven wrong when a better model of the solar system was measured/calculated.

(Also, it's nice to include some information about the topic in the thread's OP: Tyche (hypothetical planet)

 

[Kalman]

I wonder if Tyche can be a legendary Nibiru planet :hmm:

 

[Ghostrider]

Ain't no such thing as Nibiru.

La-Metal, on the other hand...

 

[Urwumpe]

What do you think about Tyche? It's 4 times bigger than Jupiter, probably it's a red dwarf but nobody has seen that before.

The better question is: How do they know that it exists and his 4 times bigger than Jupiter, if they have not seen it?

Hypothetically just means, that this planet potentially exists, but could also not exist at all. And by the way how the people calculated the existence of Tyche, it is much more likely that Tyche doesn't exist at all.

Also: A brown dwarf is at least 72 times bigger than Jupiter, a red dwarf much more.

---------- Post added at 05:12 PM ---------- Previous post was at 05:08 PM ----------

Ain't no such thing as Nibiru.

Oh it does exist as "Ne'be'ru" - which is how proper scholars would translate the word. It has just never been a planet or used as such.

 

[Kyle]

Personally, I wouldn't be shocked for us to discover a Neptune-sized object out in the outer Oort Cloud, it would for one better explain why comets come towards us because for some reason I don't fully buy the Galactic tide theory. I think that Tyche might not be a planet that formed along side our own star but a rogue planet that wandered into our suns gravitational pull and got captured into a semi-stable orbit. But I somehow doubt its 4x the size of Jupiter.. we'd defiantly have better evidence for that staring us right in the face already. IMO if there's a planet out there its:

A) Approx 25,000 AUs.
B) Slightly smaller than Neptune which's planetary equatorial radius is 24,764 ± 15 km.
C) Composition also similar to that of the 4 known Gas Giants.
D) Orbits in a retrograde orbit.
E) Probably only possible to be observed by orbiting telescopes like Kepler and WISE.

Though, if its a Neptune sized object there still wouldn't be a good explanation of the unusual orbit of Sedna.

 

[Jarvitä]

Though, if its a Neptune sized object there still wouldn't be a good explanation of the unusual orbit of Sedna.

Perhaps because at 25000 AU away, it has a smaller gravitational influence on Sedna than you do right now.

 

[luki1997a]

A brown dwarf is at least 72 times bigger than Jupiter, a red dwarf much more.

Did you made a mistake? Do you mean red dwarf or red giant;/? Not every dwarfs have to have mass 72 times bigger than Jupiter e.g. OTS 44 has mass 15 times bigger than Jupiter. ;-)

Yes, Tyche is smaller than low mass star and maybe it was a dud:lol:?
From google translate:
If it isn't a brown dwarf, but a planet, it should consist of light elements such as hydrogen or helium. Jupiter was created in a similar manner. Perhaps as a brown dwarf has lost a bit of its mass through gravitational affect of Sun and other stars. And what about the collision of objects from the Oort cloud? What can cause such a collision?

offtop: My Tyche add-on for obiter is almost ready:thumbup:

 

[Eli13]

cool but for now you'll have to label it as fictional

 

[Urwumpe]

Did you made a mistake? Do you mean red dwarf or red giant;/? Not every dwarfs have to have mass 72 times bigger than Jupiter e.g. OTS 44 has mass 15 times bigger than Jupiter. ;-)

OTS 44 is no verified brown dwarf, but likely a sub-brown dwarf. Brown dwarf is it only, if it would be verified, that stable convection streams take place inside it. The 13 Jupiter masses are a lower limit for observation, to tell, here we can theoretically have already a brown dwarf, 75 Jupiter masses is the upper limit, there you would already get into the main sequence as yellow dwarf star.

Astronomers are currently a bit in a brown dwarf hype to find the smallest object that must be a brown dwarf, but they have still not found a good way to tell reliable between Jupiter or a Star- a brown dwarf with 75 Jupiter masses would be only 10% bigger than Jupiter.

72 Jupiter masses is a good mass definition, because there you would have the convection in any case, masses below are potential convection streams. A 60 MJ object could still already have convection, but the smaller things get, the less likely it is.

Also, a red dwarf is still a small cold star, but much bigger than a brown dwarf, which is a star that failed to enter main sequence at all.

[ame="http://en.wikipedia.org/wiki/Red_dwarf"]Red dwarf - Wikipedia, the free encyclopedia[/ame]

 

[orb]

What do you think about Tyche?

There was an announcement, which made a thread 2 months ago, with some of our thoughts about it:

• Largest planet in the solar system could be about to be discovered