... One can find basic technical characteristics of the SRT on the mission website.1 Originally, the launch of SRT of the RadioAstron mission was planned on 1994, and an orbit with the following initial parameters was selected: Perigee height , km Apogee height , km Inclination, deg Perigee argument, deg Longitude of ascending node, deg Period of revolution, h 4000 768000 51.5 300.0 190.0 28 The selection of an orbit with the above This orbit has a rather weak evolution. ...

... Home Articles A History of the First Forty Years of the Amateur Astronomers Association . ... Beyond New York City . ... A History of the First Forty Years of the Amateur Astronomers Association . ... At the 35th Anniversary Dinner of the Amateur Astronomers Association, I had been asked to give a talk on the history of our society. ... The Amateur Astronomers Association had a past even before it began. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Flammarion found two comets, 1862 III with a period of 120 years and aphelion at 47.6 a.u., and 1889 II, with a somewhat longer period and aphelion at 49.8 a.u. Flammarion suggested that the hypothetical planet probably moved at 45 a.u. O ne year later, in 1880, professor Forbes published a memoir concering the aphelia of comets and their association with planetary orbits. ... In 1929 Pickering proposed planet U, distance 5.79 a.u., period 13.93 years, i.e. barely outside Jupiter's orbit. ...