113 Amalthea

Source: Wikipedia, the free encyclopedia.
Not to be confused with Amalthea (moon), one of the moons of Jupiter.

113 Amalthea
Synodic rotation period
9.950 h (0.4146 d)
0.2649±0.017
S
8.74

113 Amalthea (

rotation period of 9.95 hours. It was named after Amalthea from Greek mythology. A purported satellite of Amalthea was announced in July 2017, but was later found to be a software error in July 2021.[2]

Description

Amalthea is thought to be a fragment from the mantle of a Vesta-sized, 300–600 km diameter parent body that broke up around one billion years ago, with the other major remnant being 9 Metis.[3] The spectrum of Amalthea reveals the presence of the mineral olivine, a relative rarity in the asteroid belt.[4][5]

Based on observations made during a stellar

occultation by Amalthea of a 10th-magnitude star on 14 March 2017, it was announced in July 2017 that the asteroid has a small, 5-kilometer-sized satellite, provisionally designated S/2017 (113) 1. However, the satellite was later retracted as a software-reduction coding error on 17 July 2021.[2] The occultation also indicated that Amalthea has a distinctly elongated shape.[6]

One of Jupiter's inner small satellites, unrelated to 113 Amalthea, is also called Amalthea, as is a (apparently fictional) small Arjuna asteroid in Neal Stephenson's 2015 novel Seveneves.

References

  1. NASA Jet Propulsion Laboratory
    , retrieved 12 May 2016.
  2. ^ a b Green, Daniel W. E. (17 July 2021). "RETRACTION OF REPORT ON (113) AMALTHEA". Central Bureau Electronic Telegrams. Central Bureau for Astronomical Telegrams. Retrieved 17 February 2022.
  3. doi:10.1006/icar.1999.6266
    .
  4. Bibcode:1993LPI....24..317C
    .
  5. doi:10.1111/j.1945-5100.2000.tb01796.x
    .
  6. ^ Beatty, Kelly. "Amateur Observers Find an Asteroid's Moon". Sky & Telescope. Retrieved 15 July 2017.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=113_Amalthea&oldid=1201147008"