New planets in our solar system?

[PopHistorian]

(1) This is new. I also saw a shorter blurb on social media claiming it was confirmed. But right now it looks only to be speculative, per evidence, not directly seen.

NASA Astrobiology

Caltech Researchers Find Evidence of a Real Ninth Planet

astrobiology.nasa.gov

Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about 10 times that of Earth and orbits about 20 times farther from the sun on average than does Neptune (which orbits the sun at an average distance of 2.8 billion miles). In fact, it would take this new planet between 10,000 and 20,000 years to make just one full orbit around the sun.
[...]
... Planet Nine helps explain a number of mysterious features of the field of icy objects and debris beyond Neptune known as the Kuiper Belt.

(2) Also new, reported at practically the same time, another planet, a small one, was found by telescope.

"Something Extraordinary Occurred": A New 380-Kilometer World Has Been Found In Our Solar System

Welcome to the neighborhood, Ammonite.

www.iflscience.com

Observations of Ammonite suggest it is between 220 and 380 kilometers (137 and 236 miles) in diameter. Modeling the sednoid's orbit, the team found its perihelion – its closest approach to the Sun – is between 50 and 75 astronomical units (AU), with one AU being the distance between the Earth and the Sun. Its aphelion – the furthest point from the Sun – it is around 252 AU out from the center.

Simulating the orbit of Ammonite into the past, the team found that it has been stable for at least 4.5 billion years.

New tiny world beyond Neptune discovered — boosting ‘Planet Nine’ theory

Researchers use the Subaru Telescope in Hawaii to find a small object on the outer edge of the Solar System. Nicknamed “Ammonite,” researchers say it could provide more evidence to the hypoth…

nypost.com

 

[PopHistorian]

Session 10 September 1994:

Q: (L) How many planets are in our solar system?
A: 12
Q: (L) Could you tell us the names of all the planets, their distances from the sun, the chemical composition, and the diameter.
A:
* Mercury=Opatanar, 36 million miles from Sun; 3000 mi. diameter.
* Venus=Pemuntar, 67 million miles from Sun; 7,500 mi. diameter.
* Earth=Saras, 93 million miles from Sun; 7,900 mi. diameter.
* Mars=Masar, 141,500,000 miles from Sun; 4,200 mi. diameter.
* Jupiter=Yontar, 483,400,000 miles from Sun; 88,700 diameter.
* Saturn=Zendar, 886,700,000 miles from Sun; 74,500 diameter.
* Uranus=Lonoponor, 1,782,700,000 miles from Sun; 31,566 diameter.
* Neptune=Jinoar, 2,794,300,000 miles from Sun; 30,199 diameter.
* Pluto=Opikimanaras, 3,666,100,000 miles from Sun; 1,864 diameter.
* NI=Montonanas, 570,000,000,000 miles from Sun; solid matter; 7000 miles diameter.
* NII=Suvurutarcar, 830,000,000,000 miles from Sun; 18000 miles diameter; hydrogen, ammonia.
* NIII=Bikalamanar, 1,600,000,000,000 miles from Sun; 46000 miles diameter; hydrogen, ammonia.

Pluto is included here.

 

[axj]

10 times the mass of Earth could this one:

* NII=Suvurutarcar, 830,000,000,000 miles from Sun; 18000 miles diameter; hydrogen, ammonia

Its diameter is more than twice that of Earth. Diameter does not increase as much with more mass.

 

[Persej]

This is new.

No, it's old:

Published 2016

Radware Bot Manager Captcha

This is new. But I think that Vera Rubin has the biggest potential to discover a new planet. Or an upgrade of current telescopes with AI that will help them see better in the dark.