elliptical coordinates
91NGC 4696 — A multiwavelength image of NGC 4696. X ray emission is red, radio emission is blue, and infrared emission is green. Observation data (J2000 epoch) …
92NGC 5010 — by HST, 0.9′ view Observation data (J2000 epoch) Constellation Virgo …
93NGC 4889 — Central region of the Coma cluster, with giant elliptical galaxies NGC 4889 and NGC 4874 Observation data Constellation …
94asteroid — asteroidal, adj. /as teuh royd /, n. 1. Also called minor planet. Astron. any of the thousands of small bodies of from 480 miles (775 km) to less than one mile (1.6 km) in diameter that revolve about the sun in orbits lying mostly between those… …
95astronomy — /euh stron euh mee/, n. the science that deals with the material universe beyond the earth s atmosphere. [1175 1225; ME astronomie ( < AF) < L astronomia < Gk. See ASTRO , NOMY] * * * I Science dealing with the origin, evolution, composition,… …
96n-body problem — This article is about the problem in classical mechanics. For the problem in quantum mechanics, see Many body problem. The n body problem is the problem of predicting the motion of a group of celestial objects that interact with each other… …
97Matt Wilson (crater) — Matt Wilson is an elliptical impact crater structure situated in Gregory National Park about 17 km north of the Victoria River Roadhouse in the Northern Territory, Australia. Its size is 7.5 by 6.3 kilometers, with its long axis trending… …
98Reference ellipsoid — In geodesy, a reference ellipsoid is a mathematically defined surface that approximates the geoid, the truer figure of the Earth, or other planetary body.Because of their relative simplicity, reference ellipsoids are used as a preferred surface… …
99Gaussian beam — In optics, a Gaussian beam is a beam of electromagnetic radiation whose transverse electric field and intensity (irradiance) distributions are well approximated by Gaussian functions. Many lasers emit beams that approximate a Gaussian profile, in …
100Epoch (astronomy) — In astronomy, an epoch is a moment in time used as a reference for the orbital elements of a celestial body. [cite book|last=Soop|first=E. M.|title=Handbook of Geostationary Orbits|publisher=Springer|date=1994|isbn=9780792330547] Typically, the… …
