The Mystery of Sedna’s Orbit
Quite far away, a lonely, red rock has something imprinted upon its mysterious orbit.
What secrets might it hold?
CORRECTIONS
(noticed by youtube viewer CatKhakis)
— Citations —
2018, Gaudi et al.
2. wolframalpha.com/input?i=distance+to+horizon ...
2022, WolframAlpha
"a short horizon, never further than a mile away."
timecode 00:23
3. web.gps.caltech.edu/~mbrown/papers/ps/sedna.pdf
4. web.gps.caltech.edu/~mbrown/papers/ps/basribrown.pdf
2006, Basri & Brown
... "advancements in astronomy started revealing exoplanets that defy expectations and distant local bodies roughly the size of Pluto, calling into question what exactly earns the title of planet. Sedna's discovery was one among them" ...
timecode 01:03
5. en.wikipedia.org/wiki/541132_Lele%C4%81k%C5%ABhonua
accessed 2022
"In 2015, Leleākūhonua was discovered, an even more distant object orbiting the Sun." ...
timecode 01:24
6 iau.org/iau0603/index.html (archive)
2006
7 slate.com/technology/2006/08/breaking-news-pluto-not-a-planet.html
2006, Phil Plait
"And so it was deemed that planets are a more exclusive club. Pluto was shut out."
timecode 01:45
8. wikipedia.org/wiki/90377_Sedna#Orbit_and_rotation
9. newton.spacedys.com/astdys/index.php ...
accessed 2022
"It can be found at 76 astronomical units."
timecode 02:34
10. wolframalpha.com/input?key=&i=sedna+orbital+speed+at+perihelion
accessed 2022
11. wolframalpha.com/input?key=&i=90377+sedna+instantaneous ...
accessed 2022
12. photojournal.jpl.nasa.gov/catalog/PIA17046
2013, NASA/JPL-Caltech
"This [apoapsis] is past the termination shock; past the heliopause; past Voyager 1; through interstellar space; and right on the cusp of the theorized Oort cloud's inner edge."
timecode 03:28
13. ssd.jpl.nasa.gov/horizons_batch.cgi?batch ...
accessed 2022
... "[Sedna]'s orbit takes a long time. 11,000 Earth years" ...
timecode 05:10
2004
15. ssd.jpl.nasa.gov/horizons_batch.cgi?batch ...
accessed 2022
"Sedna will reach its nearest approach by the year 2076."
timecode 05:38
— Media —
i1. hubblesite.org/contents/media/images/2004/14/1518-Image.html
2004, NASA, ESA and M. Brown (Caltech)
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