Abstract
Current cosmological constraints allow primordial black holes to constitute dark matter in the mass range of 1018–1022 g. I show that a major portion of this logarithmic window can be ruled-out based on the solar system ephemeris, given that the external mass enclosed within 50 au from the Sun did not change by more than ∼5 × 10−14 M ⊙ yr−1 in recent decades.
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