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139 BC

Centuries: 3rd century BC - 2nd century BC - 1st century BC

Decades: 180s BC 170s BC 160s BC 150s BC 140s BC - 130s BC - 120s BC 110s BC 100s BC 90s BC 80s BC

Years: 144 BC 143 BC 142 BC 141 BC 140 BC - 139 BC - 138 BC 137 BC 136 BC 135 BC 134 BC

Events

Hipparchus makes a very precise determination of the length of the synodic month

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