New 9th planet in our solar system!!!

johnnyt123 (John) · #1 21-01-2016, 08:53 AM

Hi guys and gals

Have a read of this.
It is very exciting!!
A new ninth Neptune sized planet has been found or believed to exist beyond the orbit of Pluto.

http://www.sciencemag.org/news/2016/...n-solar-system

Regards.

John.

04Stefan07 (Stefan) · #2 21-01-2016, 09:26 AM

Exciting news!

Looking forward to see what will unfold in the next while.

AussieTrooper (Ben) · #3 21-01-2016, 11:14 AM

Announcing a 'new planet' discovery has been going on for a bloody long time, including plenty of examples of mathematically calculated planets that turned out not to exist.
Once we've got an image (read 'tiny dot') of it I'll believe it.
That said, I hope these guys are right, and well done to them if they are.

Somnium (Aidan) · #4 21-01-2016, 11:31 AM

Quote:

Originally Posted by AussieTrooper

Announcing a 'new planet' discovery has been going on for a bloody long time, including plenty of examples of mathematically calculated planets that turned out not to exist.
Once we've got an image (read 'tiny dot') of it I'll believe it.
That said, I hope these guys are right, and well done to them if they are.

that was my reaction first. the only thing that i would say is that Mike Brown did some fantastic work in discovering Eris. if it involved anyone else i would have dismissed this.

el_draco (Rom) · #5 21-01-2016, 11:56 AM

Hope Brown is the last person on earth to find it, IF it exists, or it lands on his egotistical noggin and kills him....

Chee · #6 21-01-2016, 12:04 PM

So, there is some truth about the myth of Nelirbu!
Yes, heard it on the ABC news this morning.
Seem, it is about the size of Neptune and takes 10000 years to orbit the Sun.

Somnium (Aidan) · #7 21-01-2016, 12:13 PM

Quote:

Originally Posted by Chee

So, there is some truth about the myth of Nelirbu!
Yes, heard it on the ABC news this morning.
Seem, it is about the size of Neptune and takes 10000 years to orbit the Sun.

That is what you get from the organisation that canned star stuff

alpal · #8 21-01-2016, 08:38 PM

Great news but it will be so difficult to find:

Quote:

Only the planet's rough orbit is known, not the precise location of the planet on that elliptical path. -

See more at:
http://www.caltech.edu/news/caltech-....FQiZjPKU.dpuf

gaa_ian (Ian) · #9 21-01-2016, 09:52 PM

This will be an amazing discovery when it is confirmed. Might be a job for the James Webb Tekescope once it is launched !

alpal · #10 21-01-2016, 10:36 PM

Quote:

Originally Posted by gaa_ian

This will be an amazing discovery when it is confirmed. Might be a job for the James Webb Tekescope once it is launched !

If they could give us the RA & DEC we could dial it in & check pictures weeks apart for any movement -

but they can't - they don't know the RA & DEC themselves.

Somnium (Aidan) · #11 21-01-2016, 10:38 PM

Quote:

Originally Posted by alpal

If they could give us the RA & DEC we could dial it in & check pictures weeks apart for any movement -

but they can't - they don't know the RA & DEC themselves.

they have narrowed it down to about 1/4 of the sky. not sure what Magnitude it would be, i cant imagine it would be detectable for amateurs ...

alpal · #12 21-01-2016, 10:48 PM

Quote:

Originally Posted by Somnium

they have narrowed it down to about 1/4 of the sky. not sure what Magnitude it would be, i cant imagine it would be detectable for amateurs ...

Amateurs can still do a long integration subframe & get down to small magnitudes.
The problem is that the huge area to be scanned would take forever to image.

Somnium (Aidan) · #13 21-01-2016, 10:56 PM

agreed, but it will probably be closer to Mag 30 than 20, making it very difficult

alpal · #14 21-01-2016, 11:03 PM

Quote:

Originally Posted by Somnium

agreed, but it will probably be closer to Mag 30 than 20, making it very difficult

But Pluto is mag 15 & it's very small -

this new planet is say 10 times further away but much larger -
as large as Neptune.

I think an amateur may very well be able to get a little dot on their image.

Somnium (Aidan) · #15 21-01-2016, 11:14 PM

distance reduces the magnitude by the third power ... makes a huge difference, increase in surface area goes by the square

Somnium (Aidan) · #16 21-01-2016, 11:39 PM

back of the envelope calculations (based on pure speculation and absolutely no evidence) puts it at around mag 20 ... +/- 20

Atmos (Colin) · #17 22-01-2016, 12:32 AM

Quote:

Originally Posted by Somnium

back of the envelope calculations (based on pure speculation and absolutely no evidence) puts it at around mag 20 ... +/- 20

So what you're saying is that it lies somewhere between Vega and the dimmest galaxies in the universe

jsmoraes (Jorge) · #18 22-01-2016, 01:50 AM

If I can dream... may be fools dreams...

1) Our planet has many and much chemical elements that should be produced by nova/supernova.
The binary system is more common than single star system.
Would it be the remains from nova or supernova of a companion star, as cold dwarf star ? Is it possible with only 4.5 billions of years (age of our sun) ? It seems to be few time to let proto-Earth catch those chemical elements.

2) Our Solar System did 22 tour around our galaxy. Many stars or bodies could be near us during this time. Could it be a captured body ? It seems to me a too long orbit for planet.

silv (Annette) · #19 22-01-2016, 02:38 AM

yeah, it's not a planet. it's a wormhole, the end of line 7 of the Milky Subway, d'oh.

jsmoraes (Jorge) · #20 22-01-2016, 06:06 AM

Quote:

yeah, it's not a planet. it's a wormhole, the end of line 7 of the Milky Subway, d'oh.

Wow, fantastic knowledge ! You deserve to win the Physics Nobel Award. Congratulations, mate !