Multiple questions in a single question.
Pluto, Sedna, and Quaoar are all solid objects with icy surfaces and are small when compared to the planets of the solar system. Saturn is a giant planet primarily composed of hydrogen and helium. It does not have a solid surface.
sedna is red and Pluto is thought to be grey. Sedna is smaller then Pluto.
There are no planets further than Eris, but there are Dwarf Planets and TNO's (Trans-Neptunian Objects.) Some of which are: Pluto, Eris, Haumea, Makemake, Sedna, Orcus, Quaoar, and Varuna.
Ceres, Pluto, Haumea, Makemake and Eris. Some scientific circles would also add Orcus, Charon, Quaoar, Snow White (2007 OR10), and Sedna to this list.
Quaoar is not a planet, though it may be a dwarf planet. Quaoar is located in the Kuiper Belt beyond the orbit of Neptune. It orbits the sun at a somewhat greater distance than Pluto does.
Pluto, Sedna, and Quaoar are all solid objects with icy surfaces and are small when compared to the planets of the solar system. Saturn is a giant planet primarily composed of hydrogen and helium. It does not have a solid surface.
There are several other dwarf planets in addition to Pluto. These include Eris, Sedna, Quaoar, Orcus, Makemake, Haumea, and the large asteroid Ceres.
sedna is red and Pluto is thought to be grey. Sedna is smaller then Pluto.
which one? Sedna Quaoar Eris??
There are no planets further than Eris, but there are Dwarf Planets and TNO's (Trans-Neptunian Objects.) Some of which are: Pluto, Eris, Haumea, Makemake, Sedna, Orcus, Quaoar, and Varuna.
Ceres, Pluto, Haumea, Makemake and Eris. Some scientific circles would also add Orcus, Charon, Quaoar, Snow White (2007 OR10), and Sedna to this list.
They are two different objects with different orbits. Pluto is a dwarf planet, and Quaoar might be a dwarf planet, but is right now classified as a minor planet. They also probably have very different compositions, but we don't know much about Pluto and even less about Quaoar.
smaller then the moon and pluto.
They are both dwarf planets.
It is a dwarf planet. 136199 Eris is just a large trans-Neptunian object like 136108 Haumea, 50000 Quaoar, 134340 Pluto, 136472 Makemake, 225088 (2007 OR10), 90482 Orcus and 90377 Sedna.
Quaoar is not a planet, though it may be a dwarf planet. Quaoar is located in the Kuiper Belt beyond the orbit of Neptune. It orbits the sun at a somewhat greater distance than Pluto does.
The dwarf planet candidate Sedna (90377 Sedna) has no assigned symbol, and only Pluto and Ceres do.(see related article and lists)