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101 Helena has a density of 2.0 gram per Cubic centimeters.
101 Helena was discovered on August 15th 1868.
101 Helena was discovered on 15 August 1868.
101 Helena | density | 2.0 (gramPerCubicCentimetres) 101 Helena | discovered | 1868-08-15 101 Helena | discovered | 1868-08-15