apparent position نهش ِ پدیدار، جای ~ naheš-e padidâr, jâ-ye ~ Fr.: position apparente The position on the celestial sphere at which a heavenly body
would be seen from the Earth at a particular time.
A position given by the coordinates calculated for a star, if it were
seen from the Earth’s centre, relative to the → real equator
and the → real equinox, at a certain date. It includes the
displacements from one heliocentric direction, given in a stellar catalogue, due to
→ precession, → nutation,
→ aberration, → proper motions,
→ annual parallax, and
light gravitational deviation (M.S.: SDE).
See also: → apparent; → position. |
