Trojan group

(troh -jăn) Either of two groups of asteroids that lie in the vicinity of one of the two Lagrangian points in the orbit of Jupiter around the Sun: each group occupies one corner of an equilateral triangle with the Sun and Jupiter at the other corners. Beginning with the first Trojan to be discovered, (588) Achilles in 1906, most have been named after heroes from the two sides of the Trojan Wars. In fact, perturbations by other planets mean that each member of the group oscillates considerably in position (mainly in longitude along the orbit of Jupiter) from its stable Lagrangian point. It is likely that perturbations and collisions between them cause the total number of members of the group to change with time. Recent surveys suggest that more than 1000 Trojan group members may be bright enough to be seen from the Earth but fewer than 2% of these have yet received official asteroid designations. They are all exceptionally dark bodies.

单词	trojan group
释义	Trojan group Trojan group (troh -jăn) Either of two groups of asteroids that lie in the vicinity of one of the two Lagrangian points in the orbit of Jupiter around the Sun: each group occupies one corner of an equilateral triangle with the Sun and Jupiter at the other corners. Beginning with the first Trojan to be discovered, (588) Achilles in 1906, most have been named after heroes from the two sides of the Trojan Wars. In fact, perturbations by other planets mean that each member of the group oscillates considerably in position (mainly in longitude along the orbit of Jupiter) from its stable Lagrangian point. It is likely that perturbations and collisions between them cause the total number of members of the group to change with time. Recent surveys suggest that more than 1000 Trojan group members may be bright enough to be seen from the Earth but fewer than 2% of these have yet received official asteroid designations. They are all exceptionally dark bodies.
随便看	claim her life claim his life claim history inquiry claim history review claim imaging center claim imaging operation services claim in bankruptcy claiming claiming race claiming races claiming rule team claiming the moral high ground claim jumper claim (legal) claimless claim life claim litigation counsel claim loss underwriting exchange claim master record claim my life claim of claim office claim of right claim of right act 1689 claim on an estate