| 单词 | planetary precession |
| 释义 | > as lemmasplanetary precession planetary precession n. Astronomy the part of the precession of the earth's axis that is caused by the gravitational attraction of the other planets in the solar system. ΚΠ 1863 W. Chauvenet Man. Spherical & Pract. Astron. I. xi. 604 The planetary precession does not affect the declination of stars, but changes their right ascensions, their longitudes, and their latitudes. 1971 R. H. Baker & L. W. Fredrick Astron. (ed. 9) ii. 49 Planetary precession is the effect of other planets on the plane of the equator, so that its intersection with the ecliptic shifts slowly towards the east along the celestial equator. 1992 S. P. Maran Astron. & Astrophysics Encycl. 34/2 The plane of the Earth's orbit also changes due to the gravitational effects of the planets (planetary precession). < as lemmas |
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