157 Dejanira is a main belt asteroid that was discovered by Alphonse Borrelly on 1 December 1875, and named after the warlike princess Deianira in Greek mythology (Δηιάνειρα in Greek). The Dejanira family of asteroids is named after it.

Photometric observations of this asteroid were made in early 2009 at the Organ Mesa Observatory in Las Cruces, New Mexico. The resulting light curve shows a synodic rotation period of 15.825 ± 0.001 hours.[5]

References

  1. ^ "Discovery Circumstances: Numbered Minor Planets". The International Astronomical Union Minor Planet Center. Retrieved 17 March 2021.
  2. ^ Benjamin Smith (1903) The Century Dictionary and Cyclopedia
  3. ^ Yeomans, Donald K., "157 Dejanira", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, archived from the original on 3 August 2020, retrieved 12 May 2016.
  4. ^ "The Asteroid Orbital Elements Database". astorb. Lowell Observatory.
  5. ^ Pilcher, Frederick (July 2009), "Rotation Period Determinations for 120 Lachesis, 131 Vala 157 Dejanira, and 271 Penthesilea", The Minor Planet Bulletin, vol. 36, no. 3, pp. 100–102, Bibcode:2009MPBu...36..100P.


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