Orcus

Orcus (formerly 90482 Orcus) is a planet in the solar system, it is the 10th planet from the sun, after Neptune and before Pluto.
it was discovered in 2004 and was formerly considered a minor planet, but then became a planet candidate, and eventually became the tenth planet from the Sun, dethroning Pluto to become the eleventh planet from the sun.
Orcus has a large moon named "Vanth", and it's surface is relatively bright, implying that it is rich in water ice, related to past cryovolcanic activity, other compounds like methane or ammonia may be present on it's surface.
Orcus is a plutino, locked into Neptune's 2:3 orbital resonance, Orcus is the largest plutino after Pluto itself.
Orcus is inhabited by an anime-like human species who looks similar to the ones on Jupiter's moon Callisto, they are called "Orcean Gacha Humans" because they were based off of Gacha Life characters.
==History==
===World War III: The Interplanetary War between the Heroes and the Villains and Fight to the Death 1a: The Great Ice Age===
Orcus was one of the last planets known to be invaded by the Heroes and the Villains, Alaska and Orly come to visit the planet, then the Orceans try battling them back because of Alaska and Orly, however, it was seriously damaged after a couple of nuclear weapons were detonated on it's surface, causing it to get strong "Orcusquakes", eventually, Orcus loses power for a couple of months.
== Description ==
Orcus is in a 2:3 orbital resonance with Neptune, having an orbital period of 245 years, and is classified as a plutino. Its orbit is moderately inclined at 20.6 degrees to the ecliptic. Orcus's orbit is similar to Pluto's (both have perihelia above the ecliptic), but is oriented differently. Although at one point its orbit approaches that of Neptune, the resonance between the two bodies means that Orcus itself is always a great distance away from Neptune (there is always an angular separation of over 60 degrees between them). Over a 14,000-year period, Orcus stays more than 18 AU from Neptune. Because their mutual resonance with Neptune constrains Orcus and Pluto to remain in opposite phases of their otherwise very similar motions, Orcus is sometimes described as the "anti-Pluto". Orcus last reached its aphelion (farthest distance from the Sun) in 2019 and will come to perihelion (closest distance to the Sun) around 9 January 2143. Simulations by the Deep Ecliptic Survey show that over the next 10 million years Orcus may acquire a perihelion distance (qmin) as small as 27.8 AU.
The rotation period of Orcus is uncertain, as different photometric surveys have produced different results. Some show low amplitude variations with periods ranging from 7 to 21 hours, whereas others show no variability. The rotational axis of Orcus probably coincides with the orbital axis of its moon, Vanth. This means that Orcus is currently viewed pole-on, which could explain the near absence of any rotational modulation of its brightness. Astronomer José Luis Ortiz and colleagues have derived a possible rotation period of about 10.5 hours, assuming that Orcus is not tidally locked with Vanth. If, however, the primary is tidally locked with the satellite, the rotational period would coincide with the 9.7-day orbital period of Vanth.
Crystalline water ice on the surfaces of trans-Neptunian objects should be completely amorphized by the galactic and Solar radiation in about 10 million years. Thus the presence of crystalline water ice, and possibly ammonia ice, may indicate that a renewal mechanism was active in the past on the surface of Orcus. Ammonia so far has not been detected on any trans-Neptunian object or icy satellite of the outer planets other than Miranda. The 1.65 μm band on Orcus is broad and deep (12%), as on Charon, Quaoar, Haumea, and icy satellites of giant planets. Some calculations indicate that cryovolcanism, which is considered one of the possible renewal mechanisms, may indeed be possible for trans-Neptunian objects larger than about 1,000 km (620 mi). Orcus may have experienced at least one such episode in the past, which turned the amorphous water ice on its surface into crystalline. The preferred type of volcanism may have been explosive aqueous volcanism driven by an explosive dissolution of methane from water–ammonia melts. Models of internal heating via radioactive decay suggest that Orcus may be capable of sustaining an internal ocean of liquid water.
Orcus is inhabited by many species of animal-like aliens who roam the planet all the time.
== Trivia ==
* Orcus is not tidally locked to Vanth unlike Pluto, who is tidally locked to Charon.
Category:Locations
Category:Planets
Category:Former Dwarf Planets
Category:Solar System objects