SYNODIC See also:

• PERIOD
• PERIOD (Gr. irepioSos, a going or way round, circuit, aepi, round, and &Sis, way, road)

PERIOD  , in See also:

• ASTRONOMY (from Gr. &arpov, a star, and v ,usiv, to classify or arrange)

astronomy, the apparent See also:

• PERIOD
• PERIOD (Gr. irepioSos, a going or way round, circuit, aepi, round, and &Sis, way, road)

period of a See also:

• PLANET (Gr. ssXavirrns, a wanderer)

planet or See also:

• SATELLITE (from the Lat. satelles, an attendant)

satellite when its revolution is referred to the See also:

• LINE

line passing through the See also:

• EARTH
• EARTH (a word common to Teutonic languages, cf. Ger. Erde, Dutch aarde, Swed. and Dan. jord; outside Teutonic it appears only in the Gr. 'pq'e, on the ground; it has been connected by some etymologists with the Aryan root ar-, to plough, which is seen in
• EARTH, FIGURE OF
• EARTH, FIGURE OF THE

earth or the See also:

• SUN
• SUN (0. Eng. sonne, Ger. sonne. Fr. soleil, Lat. sol, Gr. ijXior, from which comes helio- in various English compounds)

sun . In the See also:

• CASE
• CASE, JOHN (d. 1600)

case of the See also:

• PLANETS, MINOR

planets it is the period between successive conjunctions of the same See also:

• KIND (O. E. ge-cynde, from the same root as is seen in " kin," supra)

kind, inferior or See also:

• SUPERIOR

superior, with the sun . In the case of the satellites it is the period relative to the See also:

• RADIUS

radius vector from the sun .