... Mar 20 22 h 46.31 m summer: Jun 21 16 h 39.11 m autumn: Sep 23 8 h 21.54 m winter: Dec 22 4 h 48.99 m Earth in perihelion: Jan 04 6.62 h aphelion : Jul 06 19.69 h Mean obliquity of ecliptic (eps) at J2015.5: 23.437275 o = 23 o 26 ' 14.19" Sin(eps) = 0 ...
... Mar 20 4 h 31.22 m summer: Jun 20 22 h 35.23 m autumn: Sep 22 14 h 22.28 m winter: Dec 21 10 h 45.28 m Earth in perihelion: Jan 02 22.83 h aphelion : Jul 04 16.42 h Mean obliquity of ecliptic (eps) at J2016.5: 23.437145 o = 23 o 26 ' 13.72" Sin(eps) = 0 ...
... Effects of General Theory of Relativity in Solar System (Motion of Planet Perihelion, Deflection of Light Rays, Gravitation Red Shift, Delay of Radar Echo). ...
... B. Goets, R.West, The rotation period of comet 1995 O1 (Hale-Bopp) at perihelion, The First International Conference on Comet Hale-Bopp , Tenerife, Canary Island, Abstracts,p. 16-17, 1998. ...