How To Use Sedna In A Sentence

This almost certainly indicates that Sedna is spinning, completing a revolution every 20 days.
Since no images of Makemake's surface yet exist, an artist's illustration originally meant to depict Sedna has been boldly co-opted above to now illustrate Makemake.
The highly tilted orbit of Haumea and elongated one of Sedna suggest something even more dramatic perhaps shook up the early comet belt, such as a supernova blast from a nearby star's implosion. Dwarf planets Pluto, Eris battle for a spot in a vast universe
The new "planetoid," named Sedna after an Inuit goddess who created the sea creatures of the Arctic, is by far the coldest and most distant object known to orbit the sun, a team of researchers announced. Welcome to S-s-s-s-edna
Sedna is rotating much more rapidly than originally believed, spinning once on its axis every 10 hours.

Sedna, the mysterious minor planet orbiting the Sun beyond the far edge of the Kuiper Belt, is gradually yielding its secrets to planetary scientists.
Since no images of Makemake's surface yet exist, an artist's illustration originally meant to depict Sedna has been boldly co-opted above to now illustrate Makemake.
The most important hint about the existence of Nemesis is a mysterious Sedna dwarf star around the sun-borne elongated orbit. Once she crosses the circle of more than 12 million. years.
But Sedna is smaller and more eccentric still, so if you count out Pluto, you have to count out Sedna too (and all the other remote planetoids discovered over the past few years).
If Sedna did form this far out, it is likely to be accompanied by a cohort of other large planetoids in this very distant region of the solar system.
This date in history marks the discovery of what we now refer to as a ‘‘Trans-Neptunian Object’’—Sedna. Weekend SkyWatcher's Forecast – November 13-15, 2009 | Universe Today
The new planetoid has been named Sedna after the Inuit goddess of the ocean, and is eight billion miles away in the furthest reaches of the solar system, three times the distance from Earth than the previously furthest known planet, Pluto.
Sedna, the planetoid 1,000 miles in diameter discovered several weeks ago, was first photographed with a small moon orbiting its icy sphere.