Triple conjunctions between the bright exterior planets are very rare: the last triple conjunctions between Mars and Jupiter occurred in 1789–1790, in 1836–1837 and in 1979–1980. The next events of this kind will be again in 2123 and in 2169–2170.

Is Jupiter aligned with Mars?

Jupiter and Mars will share the same right ascension, with Jupiter passing 0°38' to the north of Mars. ... A graph of the angular separation between Jupiter and Mars around the time of closest approach is available here.

How often does Mars Jupiter and Saturn align?

Such an alignment occurs just once every 175 years. Fortunately, it came just after NASA scientists figured out how to put it to use.