Next Venus Transit

In message , James
writes

"Jonathan Silverlight" wrote
in message ...
In message , James
writes

"Jonathan Silverlight"
wrote
in message ...
The definitive answer to this is probably the article in the June issue
of the Journal of the BAA, where the authors say simultaneous transits
can't occur now, because the lines of nodes aren't the same, but the
lines are moving together.
Wait until July 26, 69163!
Might be worth getting Jan Meeus' book on transits, to see if he
discusses transits of Mercury from Venus, Jupiter from Saturn, and so
on.

OK, what about a transit of... say, Mars over Jupiter rather than the
sun?
Or am I just getting too complicated...


You mean as seen from Earth? I suspect those are very rare indeed,
though again I suspect Dr. Meeus has done the calculations. For
instance, the article mentions that on 21 September 13425 Venus will
occult Mercury. (That's too far ahead for Guide 8. Does any planetarium
program go that far?)

Yeah, that's what I was thinking..... although "occultation" is probably the
word I should have used!

Not according to http://home.att.net/~p.caimi/Mars.PDF! I did a search
for "occultation of jupiter by mars" and apparently there was one in
1591. There was also one in September 1170 (Julian calendar) which was
seen by Gervase of Canterbury. The source I found says Redshift has it
occurring on September 13, but Guide 8 insists on 2030 12 September.
It's beautiful! I don't have Redshift - perhaps someone can test this.
There's a fascinating page on Bill Gray's web site at
http://www.projectpluto.com/interest.htm#Mutual about mutual events. I
quote "You'll immediately notice that, though these events occur at an
average rate of about one every 35 years, that we are in the midst of a
long dearth of such events. The last was in 1818; the next will be in
2065. This is a natural extension of Murphy's Law to celestial
events."
--
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"Jonathan Silverlight" wrote in message
...
Not according to http://home.att.net/~p.caimi/Mars.PDF! I did a search
for "occultation of jupiter by mars" and apparently there was one in
1591. There was also one in September 1170 (Julian calendar) which was
seen by Gervase of Canterbury. The source I found says Redshift has it
occurring on September 13, but Guide 8 insists on 2030 12 September.
It's beautiful! I don't have Redshift - perhaps someone can test this.
There's a fascinating page on Bill Gray's web site at
http://www.projectpluto.com/interest.htm#Mutual about mutual events. I
quote "You'll immediately notice that, though these events occur at an
average rate of about one every 35 years, that we are in the midst of a
long dearth of such events. The last was in 1818; the next will be in
2065. This is a natural extension of Murphy's Law to celestial
events."

Interesting to look through that, will read it today when work quietens
down!
Cheers,
James.