Haley's Comet

[Lord_Ulf]

I have found a couple references to the passage of Haley's, one from 'pre-history' on cave paintings, and then 1066 (fortelling the outcome of Battle of Hastings), but no other reports or records in between it seems.  I have tried several websites dedicated to astronomy, and have extensive databases concerning heavenly bodies from any long/lat and date.  But, outside of checking every date from 200 years before 1066 to 68 years before, I have no way of finding a record of dates that could tell me a decade even.  If anyone knows of a detialed and extensive list of when it passed, ect, please let me know.   I obviously can concentarting on 800-1000, for Persona Research reasons.

 Thanks in advance for any help,
Ulf 'Dumnorix' Jogensen

[Matthias]

Well, Halley's Comet passes through the inner solar system once every 76 years.  1986, 1910, 1834, 1758, 1682, 1606, 1530, 1454, 1378, 1302, 1226, 1150, 1074, 998, 922, 846, 770, and so forth.

Whether or not the comet was on an orbit that would have produced a seriously visible tail on each visit is open for some debate.  But those are, arguably, your dates.

=Matt=

[Lord_Ulf]

It isn't faithful to the 76 year orbit, it has been known to come back in under 50, and other times over 100 years.  It is effected other bodiesoutside our knowledge, wich makes it irregular, tho it's USUALLY every 76.   By your count Haley's didn''t pass early in 1066, you have the date at 1074.  The passage in 1066 was when it was called, fior the first time, An Steor (SP), from which Ansteorra gets it's name, One Star.

 

[Matthias]

I'd have to disagree.  Having a comet on that kind of variable orbit would have completely discredited Sir Edmund Halley's original work in computing the orbit.  It's a fixed elliptical orbit which ends I believe between Uranus and Neptune's orbits, and really doesn't vary.  The physics requires to alter the orbital period by 25 years in either direction just... aren't possible, really, without permanently effecting the orbit.

Sorry Ulf.


=Matt=

[Lord_Ulf]

You are right, my Mattman.  I have located an astronomy program and had it give my days and times that i was needing for my pewrsonna developement.

thanks
Ulf