heliocentric position
1Heliocentric Julian Day — (HJD) is the same as the Julian day, but adjusted to the frame of reference of the Sun, and thus can differ from the Julian day by as much as 8.4 minutes (i.e. 507 seconds or 0.00587 days), that being the time it takes the Sun s light to reach… …
2Heliocentric parallax — Parallax Par al*lax, n. [Gr. ? alternation, the mutual inclination of two lines forming an angle, fr. ? to change a little, go aside, deviate; para beside, beyond + ? to change: cf. F. parallaxe. Cf. {Parallel}.] 1. The apparent displacement, or… …
3heliocentric system — ▪ astronomy a cosmological model in which the Sun is assumed to lie at or near a central point (e.g., of the solar system or of the universe) while the Earth and other bodies revolve around it. In the 5th century BC the Greek philosophers… …
4Heliocentric longitude — Longitude Lon gi*tude, n. [F., fr. L. longitudo, fr. longus long.] 1. Length; measure or distance along the longest line; distinguished from {breadth} or {thickness}; as, the longitude of a room; rare now, except in a humorous sense. Sir H.… …
5Heliocentrism — Heliocentric redirects here. For the albums, see Heliocentric (Paul Weller album) and Heliocentric (The Ocean Collective album). Heliocentric Universe …
6Tycho Brahe — This article is about the astronomer Tycho Brahe. For other uses, see Tycho Brahe (disambiguation). Tycho Ottesen Brahe Born 14 December 1546 Knutstorp Castle, Scania Died 24 October 1601 (age …
7physical science — physical scientist. 1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy. 2. these sciences collectively. [1835 45] * * * Introduction the systematic study of the inorganic world …
8Universe — For other uses, see Universe (disambiguation). Physical cosmology …
9History of astronomy — History of science …
10Timeline of astronomy — Timeline of astronomy2500 BCMany ancient sites are thought to have astronomical significance, such as the Ancient Egyptian pyramids, Harappan shell instruments, British megaliths, and buildings in China and Latin America.In Lothal, the ancient… …
