| 单词 | secondary planet |
| 释义 | > as lemmassecondary planet d. Astronomy. †secondary movable: any of the ‘movables’ except the primum mobile (obsolete). secondary planet: a satellite which revolves round a primary planet (planet n. 3a). secondary system: a subordinate system (composed of a primary planet and its satellites) within the solar system. ΘΚΠ the world > the universe > planet > primary planet > secondary planet, satellite > [noun] under-orb1605 satellite1645 lunar1655 satelles1660 secondary planet1664 moon1665 lunula1676 secondary1734 exomoon2008 the world > the universe > celestial sphere > zone of celestial sphere > sphere of ancient astronomy > [noun] > primum mobile > subordinate to under-sphere1630 secondary movable1664 the world > the universe > planet > [noun] > planetary system > secondary secondary system1868 1664 H. Power Exper. Philos. Pref. sig. A4v The secondary Planets of Saturn and Jupiter. 1690 W. Leybourn Cursus mathematicus f. 760 I now enter upon their Hypotheses, that suppose it [sc. the Earth] to be mov'd about the Sun. But before the Phaenomena of the secondary Moveables can be explained by this supposition, we must first understand [etc.]. 1786 J. Bonnycastle Introd. Astron. 38 Ten others, called secondary planets, or satellites, which regard their primaries as the centers of their motions. 1868 W. Lockyer & J. N. Lockyer tr. A. Guillemin Heavens (ed. 3) 237 The secondary systems of which that [viz. the Solar] system itself is composed. 1868 J. N. Lockyer Elem. Lessons Astron. §16 (1879) 88 The Moon..is one of the satellites, or secondary bodies. < as lemmas |
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