SmallWhale

Sednoid

Imagine icy worlds so far away, they're like shy ghosts in the dark of space!

Images

2012 VP113 CFHT 2021-10-09 annotated crop

2012 VP113 CFHT 2021-10-09 annotated crop

openverse
Celestia 2012 VP113 orbit
KBOs and resonances
TNOs-wide-view
KBO diagram eccentricity
2012 VP113 CFHT 2021-10-09 crop
2023 KQ14 DECam 2021-06-07
Distant object orbits + Planet Nine
TNOs-wideview-inclination
Sednoid apparent magnitudes
Distant object orbits and positions closeup
2023 KQ14 DECam 2014-05-04+05

Key Facts

Type of Object
Trans-Neptunian Object.
Location
Outer reaches of the solar system, beyond Neptune.
Orbit Shape
Highly stretched-out and eccentric.
Distance from Sun
Perihelion greater than 60 AU (Astronomical Units).
Fun Fact
Sednoids are so far out, they are barely affected by Neptune's gravity.

Meet the Space Wanderers!

Sednoids are super-duper far-out objects in our solar system, much farther than Pluto! They are like tiny, icy planets or big rocks that zoom around the Sun on very long, stretched-out paths. Think of a rubber band being pulled way, way back before it snaps. That's kind of like their journey! They are so distant that the Sun looks like just another bright star to them.

Where Do These Far-Out Friends Live?

These amazing objects live in the coldest, darkest parts of our solar system, way beyond Neptune. They are so far away that the Sun's warmth barely reaches them. Because they are so far from Neptune, its gravity doesn't pull on them much. Scientists think they might come from a giant, invisible cloud of icy stuff way, way out there called the Inner Oort Cloud.

What Makes a Sednoid Special?

The most special thing about sednoids is how far away they are and how weird their paths are. They have to travel super far from the Sun and then swing back in, taking thousands of years to make one trip! They are also called 'detached objects' because they are so far from Neptune that its gravity can't easily mess with their orbits. They are like little explorers on their own secret routes.

Why Are Sednoids So Cool?

Sednoids are like clues to how our solar system was made a super long time ago! By studying these distant icy travelers, scientists can learn about the early days of the Sun and planets. They help us understand what the outer edges of our solar system are made of and how things got there. They are like ancient postcards from the beginning of time!

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Based on content from Wikipedia · Licensed under CC BY-SA 4.0