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Sedna

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Astronomical Object

The Resume

    (March 14, 2004- )
    Announced by NASA
    Most distant known object to orbit the sun
    Tenth and outermost planet of the Solar System
    Named for Inuit goddess of the ocean
    Diameter 1,250 miles (150 miles smaller than Pluto)
    Three times the distance from the Sun as the ninth planet Pluto
    First spotted (November 2003)
    It is red, most likely rock and ice

Why Sedna might be annoying:

    It has made astronomy books, even those published in early 2004, somewhat outdated.
    It is eight billion miles from Earth (Pluto is three billion miles away).
    It's orbital ranges is from 8 billion to 84 billion miles from Earth.
    It is so far from the Sun, that the Sun just appears as an ordinary bright star in its darkened sky.
    California Institute of Technology in Pasadena, Dr. Michael Brown, said: 'The sun appears so small from that distance that you could completely block it out with the head of a pin.'
    Its temperature is below -400°F (coldest known object in the solar system).
    It takes 10,500 Earth years to make one Sedna year.
    It is one/seventh the size of Earth.
    Some British astronomers do not think it should be classified as a planet.
    Dr. Robin Catchpole, at the Royal Observatory in London, thinks it is just a very large asteroid. He also said that there is continuing debate if Pluto should be classified as a planet.

Why Sedna might not be annoying:

    The first six planets have been known since antiquity, then every century a new one is discovered; Uranus (1781), Neptune (1846), Pluto (1930) and Sedna (2004).
    It is the first new planet discovered since man has travelled into space.
    There is evidence (Sedna's slow rotation) that it may have a tiny moon.
    The Hubble and Spitzer space telescope have confirmed its existence.
    Despite controversy if it is a planet, NASA considers to be one because it exhibits a specific unchanged orbit around the Sun and is more massive than anything around it.
    It is just one of 400 known bodies in the Kuiper Belt.
    It may be the first visible evidence of the Oort cloud, the location where comets come from.
    Its existence adds more support to the theory that the Sun was part of a star cluster.

Featured in the following Annoying Collections:

Year In Review:

    For 2024, as of last weekly ranking, Out of 5 Votes: 0% Annoying
    In 2023, Out of 273 Votes: 28.94% Annoying
    In 2022, Out of 11 Votes: 9.09% Annoying
    In 2021, Out of 10 Votes: 50.0% Annoying
    In 2019, Out of 1 Votes: 0% Annoying
    In 2018, Out of 2 Votes: 50.0% Annoying
    In 2017, Out of 10 Votes: 0% Annoying
    In 2016, Out of 4 Votes: 50.0% Annoying
    In 2015, Out of 18 Votes: 33.33% Annoying
    In 2014, Out of 12 Votes: 50.0% Annoying
    In 2013, Out of 34 Votes: 35.29% Annoying
    In 2012, Out of 60 Votes: 80.0% Annoying
    In 2011, Out of 82 Votes: 53.66% Annoying
    In 2010, Out of 25 Votes: 64.00% Annoying
    In 2009, Out of 46 Votes: 36.96% Annoying
    In 2008, Out of 84 Votes: 35.71% Annoying
    In 2007, Out of 118 Votes: 48.31% Annoying
    In 2006, Out of 306 Votes: 41.50% Annoying
    In 2005, Out of 349 Votes: 42.69% Annoying
    In 2004, Out of 339 Votes: 43.66% Annoying