7 ms·1.2mega-kilo-meter? 1.2 million kilo-meter? What about the proper unit: 1.2Gm (1.2 giga-meter).by bombela 1y ago1.2mega-kilo-meter? 1.2 million kilo-meter? What about the proper unit: 1.2Gm (1.2 giga-meter).