However, be careful when discarding minima. The 20ĭegrees is a local minima, but not a conjunction. For example, Mercury and Venus may approach each other, reachĪ minimal distance of 20 degrees, and then drift apart. The "daily" works for planets (but not some asteroids andĭefinitely not the Moon) because the planets move through the skyįor efficiency, carefully discard local minima that are too I am still researching a general answer to this question ("How toĬalculate conjunctions of 2 planets"), but here's what I have so far.Ĭompute the positions of the planets at regular intervals (eg,ĭaily). Iterative method and the C SPICE libraries, I created a table ofĬonjunctions for the visible planets (Mercury, Venus, Mars, Jupiter, Reliable non-iterative method to find conjunctions. ![]() Summary: I'm still researching, but there appears to be no well-known, ![]() ![]() It's still iterative, but fairly fast (since NASA uses fairly powerful servers, even for their websites). EDIT: lets you find planetary conjunctions online using NASA's data.
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