Determine the horizontal parallax of Mars during opposition. The distance from Mars to the Sun is 1.5 AU.

Determine the horizontal parallax of Mars during opposition. The distance from Mars to the Sun is 1.5 AU. That is, the horizontal parallax of the Sun is 8.8 “.

Dm / Dc = pc / pm; pm = Dcpc / Dm; pm = 17, 6 “, here Dm = 0.5 AU – distance from Earth to Mars in opposition.

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