Ceres

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Introduction1

Encyclopedia

Ceres (minor-planet designation: 1 Ceres) is a dwarf planet in the asteroid belt between the orbits of Mars and Jupiter. Originally considered a planet, it was reclassified as an asteroid in the 1850s after the discovery of dozens of other objects in similar orbits. In 2006, it was reclassified again as a dwarf planet – the only one always inside Neptune’s orbit – because, at 940 km (580 mi) in diameter, it is the only asteroid large enough for its gravity to maintain it as a spheroid in hydrostatic equilibrium. — Wikipedia

Ceres (Encyclopædia Britannica)

Ceres (Wolfram Alpha)
Minor Planets (Wolfram Alpha)

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Innovation

Dawn was a space probe that was launched by NASA in September 2007 with the mission of studying two of the three known protoplanets of the asteroid belt: Vesta and Ceres. Dawn entered orbit around Ceres on March 6, 2015. In 2017, NASA announced that the planned nine-year mission would be extended until the probe’s hydrazine fuel supply was depleted. On November 1, 2018, NASA announced that Dawn had depleted its hydrazine, and the mission was ended. The spacecraft is currently in a derelict, but stable, orbit around Ceres. Dawn is the first spacecraft to orbit two extraterrestrial bodies, the first spacecraft to visit Vesta and Ceres, and the first to orbit a dwarf planet. — Wikipedia

Note: This is a 360° Video — press and hold to explore it!

Dawn (NASA Jet Propulsion Laboratory, YouTube Playlist)

Ceres (Jet Propulsion Laboratory, NASA)

Legacy of NASA’s Dawn, Near the End of its Mission (NASA/JPL)
Dawn (JPL, NASA)
Dawn Mission (NASA)

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Preservation

History

In 1772, German astronomer Johann Elert Bode, citing Johann Daniel Titius, published a numerical procession known as the Titius–Bode law (now discredited); a formula that appeared to predict the orbits of the known planets but for an unexplained gap between Mars and Jupiter. The pattern predicted that there ought to be another planet with an orbital radius near 2.8 astronomical units (AU), or 420 million km, from the Sun. The Titius–Bode law gained more credence with William Herschel’s discovery of Uranus near the predicted distance for a planet beyond Saturn.

In 1800, a group headed by Franz Xaver von Zach, editor of the German astronomical journal Monatliche Correspondenz, sent requests to 24 experienced astronomers (whom he dubbed the “celestial police”), asking that they combine their efforts and begin a methodical search for the expected planet. Although they did not discover Ceres, they found the asteroids 2 Pallas, 3 Juno and 4 Vesta.

One of the astronomers selected for the search was Giuseppe Piazzi, a Catholic priest at the Academy of Palermo, Sicily. Piazzi discovered Ceres on 1 January 1801. — Wikipedia

The first asteroid ever discovered (Carrie Nugent, TED-Ed)

Library

WorldCat, Library of Congress, UPenn Online Books, Open Library

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Participation

Education

Planets and Dwarf Planets (Ask an Astronomer, Cornell University)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

Organization

International Astronomical Union (IAU)
Minor Planet Center (International Astronomical Union)

News

Ceres (Astronomy Magazine)
Ceres (Phys.org)
Ceres (NPR Archives)

Book

Ceres (ISBNdb)

Government

Document

Ceres (USA.gov)

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More News …

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Is Pluto a planet? It is no longer considered...
    on August 31, 2022 at 6:31 pm

    Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. Subject to memorization in school and known as the definitive planetary lineup, Pluto was included in the list until the International Astronomical Union determined it did not meet qualifications in 2006.

  • Modeling reveals how dwarf planet Ceres powers...
    on August 1, 2022 at 1:37 pm

    For a long time, our view of Ceres was fuzzy, said Scott King, a geoscientist in the Virginia Tech College of Science. A dwarf planet and the largest body found in the asteroid belt—the region between Jupiter and Mars speckled with hundreds of thousands of asteroids—Ceres had no distinguishable surface features in existing telescopic observations from Earth.

  • Ceres probably formed farther out in the solar...
    on May 19, 2022 at 2:55 pm

    When Sicilian astronomer Giuseppe Piazzi spotted Ceres in 1801, he thought it was a planet. Astronomers didn't know about asteroids at that time. Now we know there's an enormous quantity of them, primarily residing in the main asteroid belt between Mars and Jupiter.

  • Planetary Decadal Survey says it's time for a...
    on April 25, 2022 at 3:20 pm

    Since 2002, the United States National Research Council (NRC) has released a publication that identifies objectives and makes recommendations for science missions for NASA, the National Science Foundation, and other government agencies for the next decade. These reports, appropriately named Planetary Science Decadal Surveys, help inform future NASA missions that address the mysteries that persist […]

  • Dwarf planet Ceres: Organic chemistry and salt...
    on February 22, 2022 at 5:11 pm

    The third-largest crater on the dwarf planet Ceres was geologically active at least once many millions of years after its formation. In a recent study published today in the journal Nature Communications, researchers from the Max Planck Institute for Solar System Research (MPS) in Göttingen, the University of Münster (WWU) and the National Institute of Science Education and Research (NISER) in […]

  • First quadruple asteroid system detected
    on February 18, 2022 at 3:10 pm

    A trio of researchers from the National Astronomical Research Institute of Thailand, Université de Lyon and Sorbonne Université, respectively, has made the first sighting of a quadruple asteroid system—an asteroid with three moons orbiting around it. In their paper published in the journal Astronomy and Astrophysics, Anthony Berdeu, Maud Langlois and Frédéric Vachier, describe how they […]

  • Looking up at the asteroids in the neighborhood
    on January 19, 2022 at 1:08 pm

    Asteroids fly through our solar system all the time, but it's rare for us to take notice of them. But that's changed this week, as an asteroid passes within 1,231,184 miles of Earth on January 18. The asteroid, dubbed 7482 (1994 PC1), was first seen in 1994 and is about two-thirds of a mile wide.

  • 2029 will be the perfect year to launch a mission...
    on January 5, 2022 at 11:13 am

    Object 90377 Sedna—a distant trans-Neptunian object known best for its highly elliptical, 11,390-year long orbit—is currently on its way toward perihelion (its closest approach to the sun) in 2076. After that, Sedna will swing out into deep space again and won't be back for millennia, making this flyby a once-in-a-lifetime (or, once in ~113 lifetimes) opportunity to study an object from the […]

  • Astronomers find mysterious dusty object orbiting...
    on January 3, 2022 at 8:06 pm

    The Transiting Exoplanet Survey Satellite, TESS, was launched in 2018 with the goal of discovering small planets around the sun's nearest neighbor stars. TESS has so far discovered 172 confirmed exoplanets and compiled a list of 4703 candidate exoplanets. Its sensitive camera takes images that span a huge field of view, more than twice the area of the constellation of Orion, and TESS has also […]

  • Moons are planets too
    on November 3, 2021 at 2:33 pm

    What makes a planet a planet? The answer turns out to be rather contentious. The official definition of a planet, as defined by the International Astronomical Union (IAU) is that a planet must satisfy three conditions:

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Related

Here are links to pages about closely related subjects.

Knowledge Realm

Physical

“Fundamentals”
Law (Constant) Relativity
Force Gravity, Electromagnetism (Light, Color)
Matter (Microscope) Molecule, Atom (Periodic Table), Particle

“Space”
Universe (Astronomical Instrument)
Galaxy Milky Way, Andromeda
Planetary System Star, Brown Dwarf, Planet, Moon

Our Neighborhood
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Trans-Neptunian Object
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid

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Notes

1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.