5145 Pholus

David Lincoln Rabinowitz (born 1960) is a researcher at Yale University studying the Kuiper belt and the outer solar system. Along with Michael E. Brown and Chad Trujillo he has discovered trans-Neptunian objects, among them: 90377 Sedna - possibly the first known inner Oort cloud object. 90482 Orcus 2003 UB313 - probably larger than Pluto

Read more here: » David L. Rabinowitz: Encyclopedia - David L. Rabinowitz

90377 Sedna is a trans-Neptunian object, discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003. Its discovery was the farthest distance at which any natural object in the solar system has ever been observed. Sedna is described as a cold planetoid, perhaps as large as two-thirds the size of Pluto. 90377 Sedna - General information. Sedna was discovered during a survey conducted with the Samuel Oschin telescope at Palomar Observat ...

Including:

• 90377 Sedna - General information
• 90377 Sedna - Orbital characteristics
• 90377 Sedna - Physical characteristics
• 90377 Sedna - Classification

Read more here: » 90377 Sedna: Encyclopedia - 90377 Sedna

2060 Chiron (IPA: [kaɪ ron]) is an object in the outer solar system with an orbit between those of Saturn and Uranus and a radius of 71±5 km [1]. Although it was initially classified as an asteroid, later dispute arose as to whether it was an asteroid or actually a comet. It was discovered in 1977 by Charles T. Kowal and named after Chiron of Greek legend. Chiron should not be confused with t ...

Read more here: » 2060 Chiron: Encyclopedia - 2060 Chiron

Sedna was discovered during a survey conducted with the Samuel Oschin telescope at Palomar Observatory near San Diego, California (USA) and was observed within days on telescopes from Chile, Spain, and the USA (Arizona, and Hawaii). NASA's orbiting Spitzer Space Telescope was also pointed toward the object, but could not detect it — putting an upper-bound on its diameter at roughly three-quarters that of Pluto. Because of its cold, distant nature, and because all other planets of the Solar system are named after (Roman and Greek) go ...

See also:

90377 Sedna, 90377 Sedna - General information, 90377 Sedna - Orbital characteristics, 90377 Sedna - Physical characteristics, 90377 Sedna - Classification

Read more here: » 90377 Sedna: Encyclopedia II - 90377 Sedna - General information

Sedna has a highly elliptical orbit, with its aphelion estimated at 975 AU and its perihelion at about 76.16 AU. At its discovery it was approaching perihelion at about 90 AU from the Sun. It was the farthest from the Sun that any solar system object had up to then been observed, although some objects like long-period comets originally observed at closer distances were most likely further from the Sun than Sedna but too dim to be observed. 2003 UB313 was later detected at 97 AU. Sedna's orbit takes about ...

See also:

90377 Sedna, 90377 Sedna - General information, 90377 Sedna - Orbital characteristics, 90377 Sedna - Physical characteristics, 90377 Sedna - Classification

Read more here: » 90377 Sedna: Encyclopedia II - 90377 Sedna - Orbital characteristics

Sedna has an estimated diameter of between 1180 and 1800 kilometres (730 to 1120 miles). At the time of its discovery it was the largest object found in the solar system since Pluto was discovered in 1930. It is now generally believed to be the 4th largest known trans-Neptunian object after 2003 UB313, Pluto, and 2005 FY9. The planetoid is so far from the Sun that the temperatur ...

See also:

90377 Sedna, 90377 Sedna - General information, 90377 Sedna - Orbital characteristics, 90377 Sedna - Physical characteristics, 90377 Sedna - Classification

Read more here: » 90377 Sedna: Encyclopedia II - 90377 Sedna - Physical characteristics

Sedna has an estimated diameter of between 1180 and 1800 kilometres (730 to 1120 miles). At the time of its discovery it was the largest object found in the solar system since Pluto was discovered in 1930. It is now generally believed to be the 5th largest known trans-Neptunian object after 2003 UB313, Pluto, 2005 FY9, and 2003 EL61. The planetoid is so far from the Sun that the temperatur ...

See also:

90377 Sedna, 90377 Sedna - General information, 90377 Sedna - Orbital characteristics, 90377 Sedna - Physical characteristics, 90377 Sedna - Classification

Read more here: » 90377 Sedna: Encyclopedia II - 90377 Sedna - Physical characteristics

Sedna has a highly elliptical orbit, with its aphelion estimated at 942 AU and its perihelion at about 76.1 AU. At its discovery it was approaching perihelion at about 90 AU from the Sun. It was the farthest from the Sun that any solar system object had up to then been observed, although some objects like long-period comets originally observed at closer distances were most likely further from the Sun than Sedna but too dim to be observed. 2003 UB313 was later detected at 97 AU. Sedna's orbit takes about ...

See also:

90377 Sedna, 90377 Sedna - General information, 90377 Sedna - Orbital characteristics, 90377 Sedna - Physical characteristics, 90377 Sedna - Classification

Read more here: » 90377 Sedna: Encyclopedia II - 90377 Sedna - Orbital characteristics

The discoverers have argued that Sedna is actually the first observed body belonging to the Oort cloud, saying that it is too far out to be considered a Kuiper belt object. Because it is a great deal closer to the Sun than was expected for an Oort cloud object, and has an inclination roughly in line with the planets and the Kuiper belt, they describe the planetoid as being an inner Oort cloud object, situated in the disc reaching from the K ...

See also:

90377 Sedna, 90377 Sedna - General information, 90377 Sedna - Orbital characteristics, 90377 Sedna - Physical characteristics, 90377 Sedna - Classification

Read more here: » 90377 Sedna: Encyclopedia II - 90377 Sedna - Classification