* 2003 – Astronomers Michael E. Brown, Chad Trujillo, and David L. Rabinowitz discover 90377 Sedna, a Trans-Neptunian object.

Although the Kuiper belt and the scattered disc have been observed and mapped, only four currently known trans-Neptunian objects — 90377 Sedna,,, and — are considered possible members of the inner Oort cloud.

90377 Sedna | Sedna, a possible inner Oort cloud object discovered in 2003

Apart from long-period comets, only four known objects have orbits which suggest that they may belong to the Oort cloud: 90377 Sedna, 2000 CR < sub > 105 </ sub >, 2006 SQ < sub > 372 </ sub > and 2008 KV < sub > 42 </ sub >.

* 11. 4 Tm — 76. 2 AU — Perihelion distance of 90377 Sedna

* 13. 5 Tm — 90. 2 AU — Current distance to 90377 Sedna

* c. May 31: the planetoid 90377 Sedna is expected to reach its perihelion, its closest point to the Sun.

* 146 Tm — 975 AU — Aphelion distance of 90377 Sedna

90377 Sedna

90377 Sedna, a trans-Neptunian object discovered by Michael Brown ( Caltech ), Chad Trujillo ( Gemini Observatory ) and David Rabinowitz ( Yale University ) on November 14, 2003, is named for her.

* November 14 – Trans-Neptunian object 90377 Sedna, one of the most distant objects in the Solar System, discovered by Palomar Observatory.

Another program that used the QUEST results discovered 90377 Sedna on 14 November 2003, and around 40 Kuiper belt objects.

* March 15-Astronomers announce the discovery last year of trans-Neptunian object 90377 Sedna, one of the most distant objects in the Solar System.

This is the telescope that produced the images leading to the discovery of 50000 Quaoar in 2002, and 90377 Sedna in 2003 ( published 2004 ) and the dwarf planet Eris.

90377 Sedna is a large trans-Neptunian object, which was about three times as far from the Sun as Neptune.

# REDIRECT 90377 Sedna

# REDIRECT 90377 Sedna

# redirect 90377 Sedna

* 90377 Sedna, possibly the first known inner Oort cloud object.

# REDIRECT 90377 Sedna

# REDIRECT 90377 Sedna

Hurt produced the first published artist concepts of the Trans-Neptunian object 90377 Sedna, from data obtained by the Spitzer Space Telescope.

* 90377 Sedna, an object in the Sun's far outer Solar System discovered in 2003

The large trans-Neptunian object 90377 Sedna had the provisional designation, meaning it was discovered in the first half of November 2003, and that it was the 302nd object ( B -> 2 + 12 * 25 = 302 ) discovered during that time.

The Minor Planet Center classifies the trans-Neptunian object 90377 Sedna as a scattered-disc object.

Kavelaars contacted the author of the tale, Michael Kusugak, to get his assent, and the latter also suggested the names for Kiviuq and 90377 Sedna.

The Oschin Telescope was responsible for the discovery of 90377 Sedna on 2003-11-14 and Eris, the " 10th Planet " on 2005-01-05 from images taken 2003-10-21.

Some of these large objects past Pluto include 136199, 136108, 136472, and 90377 Sedna.

The classification would include,,,, 90377 Sedna, 90482 Orcus and 50000 Quaoar ; it might also include and 20000 Varuna if they are towards the larger end of current estimates.

" Our newly discovered object is the coldest most distant place known in the Solar System ," said Mike Brown on his website, " so we feel it is appropriate to name it in honor of Sedna, the Inuit goddess of the sea, who is thought to live at the bottom of the frigid Arctic Ocean.

alt = Sedna, a red, icy globe, is barely lit by a distant Sun

Sedna and two other very distant objects ( and ) share their colour with outer classical Kuiper belt objects and the centaur 5145 Pholus, suggesting a similar region of origin.

Mike Brown and his team favored the hypothesis that Sedna was lifted into its current orbit by a star from the Sun's birth cluster, arguing that Sedna's aphelion of about 1, 000 AU, which is relatively close compared to those of long-period comets, is not distant enough to be affected by passing stars at their current distances from the Sun.

* 2003 – Sedna, a large object with an unprecedented 12, 000-year orbit, is discovered by Michael E. Brown, Chad Trujillo, and David L. Rabinowitz.

The trans-Neptunian object Sedna has an extra-long and unusual elliptical orbit around the Sun, ranging between 76 and 975 AU.

Astronomer Michael E. Brown, co-discoverer of Sedna and the dwarf planets,, and, believes it to be the most scientifically important trans-Neptunian object found to date, as understanding its unusual orbit is likely to yield valuable information about the origin and early evolution of the Solar System.

The team made the name " Sedna " public before the object had been officially numbered.

Sedna has the longest orbital period of any known large object in the Solar System, calculated at around 11, 400 years.

In an essay in About Time, a critical analysis of classic Doctor Who, Lawrence Miles and Tat Wood suggest that Planet 14 may be Telos, placing that planet as the fourteenth in our own solar system, after Mercury, Venus, Earth, Mondas, Mars, the time-looped planet mentioned in Image of the Fendahl, Jupiter, Saturn, Uranus, Neptune, Pluto, " Cassius " ( mentioned in The Sun Makers as a planet beyond Pluto ) and " Xena " ( a name popularly used for the dwarf planet Eris prior to its official naming ; in the essay, Miles and Wood confuse it with Sedna, another trans-Neptunian object discovered by the same team of astronomers ).

Sedna was discovered by a team using the Samuel Oschin telescope on 14 November 2003 and is a trans-Neptunian object.

Sedna is not the only such object: ( discovered before Sedna ) and have a perihelion too far away from Neptune to be influenced by it.