12923 Zephyr

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12923 Zephyr
Discovery
SMASS = S:[1]
  • S[10][11]

    • 12923 Zephyr (

    Lowell Observatory Near-Earth Object Search at Anderson Mesa Station near Flagstaff, Arizona.[4] The asteroid was named after the deity Zephyrus from Greek mythology.[3]

    Orbit and classification

    Zephyr orbits the Sun at a distance of 1.0–2.9 AU once every 2 years and 9 months (1,003 days). Its orbit has an eccentricity of 0.49 and an inclination of 5° with respect to the ecliptic.[1] The body's observation arc begins with a precovery taken at Palomar Observatory in April 1955, almost 44 years prior to its official discovery observation at Anderson Mesa.[4]

    Close encounters

    This

    potentially hazardous asteroid. In September 2010, the asteroid approached Earth at 0.2546 AU (38,100,000 km); it will make close encounters with Earth again in 2021, 2032 and 2043.[1]

    Naming

    This

    M.P.C. 52768).[13]

    Physical characteristics

    In the

    Tholen classification (noisy spectrum).[11]

    Rotation period

    In April 1999, a rotational

    U=3).[a]

    Diameter and albedo

    According to the survey carried out by the

    albedo between 0.1764 and 0.21.[5][6][7][8][9]

    The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE data, with albedo of 0.1764 and a diameter of 2.06 kilometers based on an absolute magnitude of 15.93.[11]

    Notes

    1. ^ a b c Pravec (1999) web: rotation period 3.891 hours with a brightness amplitude of 0.18 mag. Summary figures for (12923) Zephyr at LCDB and Ondrejov Asteroid Photometry Project (data sheet)

    References

    1. ^ a b c d e f g h i j "JPL Small-Body Database Browser: 12923 Zephyr (1999 GK4)" (2017-01-19 last obs.). Jet Propulsion Laboratory. Retrieved 17 October 2017.
    2. ^ "zephyr". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
    3. ^
      ISBN 978-3-540-34361-5
      .
    4. ^ a b c d "12923 Zephyr (1999 GK4)". Minor Planet Center. Retrieved 17 October 2017.
    5. ^
      doi:10.1088/0004-6256/141/3/75
      .
    6. ^
      doi:10.1088/0004-637X/743/2/156
      .
    7. ^
      doi:10.1088/0004-637X/741/2/90
      .
    8. ^
      doi:10.1016/j.icarus.2012.07.026
      .
    9. ^
      doi:10.1088/0004-6256/142/3/85
      .
    10. ^
      doi:10.1016/j.icarus.2013.10.004
      .
    11. ^ a b c d "LCDB Data for (12923) Zephyr". Asteroid Lightcurve Database (LCDB). Retrieved 17 October 2017.
    12. doi:10.1016/j.icarus.2015.08.007
      .
    13. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 October 2017.

    External links

    Retrieved from "https://en.wikipedia.org/w/index.php?title=12923_Zephyr&oldid=1190799364"