The rotation of asteroid (16) Psyche

Details The rotation of asteroid (16) Psyche The rotation of asteroid (16) Psyche

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982cha%26a...6...57z&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 6, Issue 1, p. 57-59.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We used observations at 4 oppositions to calculate the rotation of the asteroid (16) Psyche. Our results are 1) the pole is λ 225°, β = +5° (1950.0), 2) the rotation is direct, and 3) the sidereal period is 4h 11m 45s.42 +/- 0s.01.
At the three oppositions of 1955, 1965 and 1980, the relative positions of the Sun, the Earth and the asteroids were almost the same, and the observed light curves were also nearly the same. Therefore, this asteroid may be said to have shown no precession over the 20 years observed.

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