substellar point

См. также в других словарях:

• substellar point — |səb+... noun Etymology: substellar from sub + stellar : the point on the earth s surface at which a particular star is in the zenith …   Useful english dictionary

• substellar point — The point on the earth’s surface where a line joining a heavenly body to the center of the earth cuts the earth’s surface. It is the geographical position of the subpoint of the body and at any particular instant …   Aviation dictionary

• substellar — /sub stelˈər/ adjective 1. Directly under a star, applied eg to a point on the earth s surface where the star is vertically overhead 2. Under the influence of a star ORIGIN: ↑sub (1) …   Useful english dictionary

• sub|point — «SUHB POYNT», noun. = substellar point. (Cf. ↑substellar point) …   Useful english dictionary

• earthly position — earthly position, = substellar point. (Cf. ↑substellar point) …   Useful english dictionary

• Gliese 581 c — Planetbox begin name = Gliese 581 c Planetbox star star = Gliese 581 constell = Libra RA = RA|15|19|26 DEC = DEC|−07|43|20 dist ly = 19.9 dist pc = 6.12 class = M2.5VPlanetbox orbit period = 12.93cite encyclopedia | title = Planet : Gl 581 c |… …   Wikipedia

• HD 189733 b — Planetbox begin name = HD 189733 b Planetbox image caption = An artist s impression of HD 189733 b about to block out its parent star.Planetbox star star = HD 189733 A constell = Vulpecula RA = RA|20|00|43.7133 DEC = DEC|+22|42|39.070 dist ly =… …   Wikipedia

• Brown dwarf — Brown dwarfs are sub stellar objects which are too low in mass to sustain hydrogen 1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no… …   Wikipedia

• Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… …   Wikipedia

• White dwarf — For other uses, see White dwarf (disambiguation). Image of Sirius A and Sirius B taken by the Hubble Space Telescope. Sirius B, which is a white dwarf, can be seen as a faint pinprick of light to the lower left of the much brighter Sirius A …   Wikipedia

• Proxima Centauri — Coordinates: 14h 29m …   Wikipedia