The Net Advance of Physics:
General: see also
Seeing Earth's Orbit in the Stars: Parallax and Aberration
by Todd K. Timberlake [2012/08]
Build your own analemma
by Charles H. Holbrow [2013/02] "Earth's analemma is the lopsided figure eight marked out over a year by the position of the Sun in the sky observed at the same clock time each day."
THE NET ADVANCE OF PHYSICS