msb@lsuc.UUCP (Mark Brader) (07/30/85)
This item entered net.space from the Arpa side. On Usenet it obviously belongs in net.astro. I'm reposting it as a cross-posting so that followups will go both to Usenet net.astro types and to the Arpans who originated it. Reposted by Mark Brader > From: Houser@MIT-MULTICS.ARPA > > > A book I was reading recently mentioned that over time the > angle of the plane of the ecliptic changes. The consequence is that > the latitude of the tropics also move. While this makes sense, the > book also stated that there is no formula which describes the motion > over time. Is this really true? The context was that certain > archeological sites are solstice oriented and could be accurately > dated if it was known in what year a Tropic was at X latitude. Just > curious. > > jim@tycho