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Thread: Asteroid 15 Eunomia Opposes Sun 2021 JAN 21

  1. #1
    Join Date
    Sep 2007
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    USA
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    Cool Asteroid 15 Eunomia Opposes Sun 2021 JAN 21

    Asteroid 15 Eunomia is currently the second brightest asteroid at magnitude +8.6. Eunomia will appear within Cancer in opposition to the Sun on 2021 JAN 21 at magnitude +8.4.

    Eunomia is the most massive stony asteroid. It was discovered in 1851, and has a mean diameter of 268 km.

    A Eunomia chart and ephemeris can be found on my Asteroids webpage at https://www.CurtRenz.com/asteroids.html

    Photos and descriptions of Eunomia would be welcome additions to this thread.
    For astronomical graphics and data visit
    https://www.CurtRenz.com/astronomy.html

  2. #2
    Join Date
    Dec 2020
    Posts
    103
    Like some other families of asteroids, the Eunomia family was formed during the destruction of the parent asteroid as a result of the collision of another large asteroid with it. Asteroid (15) Eunomia is located near the center of mass of the family; about 70-75% of the parent body's matter is concentrated in it. It is the largest member of its family, as well as the largest "rock" asteroid of spectral class S among all the main belt asteroids. Eunomia has a highly elongated shape with a diameter along the longitudinal axis of 300 km and an average diameter of 250 km. And the average diameter of the parent body before its destruction could be about 280 km

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