780 Armenia is a minor planet in the asteroid belt orbiting the Sun. It is named after the Kingdom of Armenia, now Armenia. This object is orbiting at a distance of 3.11 AU with an eccentricity of 0.097 and a period of 5.50 yr. The orbital plane is inclined at an angle of 19.1° to the plane of rotation.[2] This asteroid spans a girth of ~94 km. The long rotation period of this asteroid necessitated light curve data from more than one latitude. The overlapping data provided a solution with a period of 19.891±0.002 h and a brightness amplitude of 0.18±0.03 in magnitude.[3]

This object is the namesake of the Armenia family, a family of 13–76 asteroids that share similar spectral properties and orbital elements; hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination.[4]

References

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ a b Yeomans, Donald K., "780 Armenia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, archived from the original on 3 August 2020, retrieved 5 May 2016.
  3. ^ Benishek, Vladimir; Pilcher, Frederick (October 2009), "Period Determination of 780 Aremenia: an Inter-Longitude Collaboration", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 36 (4): 167–168, Bibcode:2009MPBu...36..167B.
  4. ^ Novaković, Bojan; et al. (November 2011), "Families among high-inclination asteroids", Icarus, vol. 216, no. 1, pp. 69–81, arXiv:1108.3740, Bibcode:2011Icar..216...69N, doi:10.1016/j.icarus.2011.08.016.


Allikas: http://en.wikipedia.org/wiki/780_Armenia
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