• WordNet 3.6
    • n Sedna a planetoid of rock and ice about three-quarters the size of Pluto discovered in 2003; the most distant object known to orbit around the sun
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In news:

Artist's conception of Sedna, an exoplanet hiding on the fringes of our solar system.
Sedna Rosé of Syrah Napa Valley 2008.
'Sedna Desgagnes': Photo credit Groupe Desgangnes.
The upbound freighter 'Sedna Desgagnes' aground near Johnstown Bridge off Prescott, Ontario.
FoxPro Developers Prep for Microsoft Sedna .
What influences Sedna 's lethargic rotation speed.
New computer simulations suggest Sedna could have formed where we find it today.
Sedna 's rotation baffles astronomers.

In science:

Sedna, as it has no counterpart within the orbit of Mercury.
Defining planets by a generating function
Experience with the public after the discoveries of Quaoar and Sedna, however, has slowly taught me not to ignore the importance of culture.
Planetesimals To Brown Dwarfs: What is a Planet?
This scheme includes Pluto and 2003 UB313 as planets, but also Ceres, Quaoar, Sedna, and other yet to be discovered and/or named KBOs that are sufficiently round.
Planetesimals To Brown Dwarfs: What is a Planet?
Migration could enhance the delivery of minor bodies to the Oort Cloud and explain the transport of Kuiper Belt outliers 2000 CR105 and Sedna (90377) that, with perihelia larger then Neptune’s semi-ma jor axis, still elude dynamical explanation (Brown et al. 2004; Morbidelli & Levison 2004).
On the Origin of the Eccentricities of Extrasolar Planets