Planetary Systems

Some articles on planetary systems, system, planetary, planetary system:

HD 20782 - Planetary Systems - HD 20781
... The HD 20781 system Companion Mass Semimajor axis Orbital period Eccentricity Radius b 12.04 ± 1.11 M⊕ 0.169 ± 0.0028 29.15 ± 0.0201 0.11 ± 0.06 — c 15.76 ± 1,20 M ...
Alien Intelligence - Scientific Search - Extrasolar Planets
... by recent technology is inadequate for a detailed study of extrasolar planetary objects ... been argued that Alpha Centauri, the closest star system to Earth, may contain planets which could be capable of sustaining life ... that scientists identified twenty-eight new extra-solar planetary bodies ...
Peter Van De Kamp - The Barnard's Star Affair
... of Barnard's Star and in the 1960s reported a periodic "wobble" in its motion, apparently due to planetary companions ... in error and continued to publish papers about a planetary system around Barnard's Star into the 1980s, while modern radial velocity curves place a limit on the planets much smaller than claimed by Van de Kamp ... Kamp and his staff made similar claims of planetary systems around the nearby stars Lalande 21185, 61 Cygni, and many others, based on the same flawed photographic plates ...

Famous quotes containing the words systems and/or planetary:

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