Giga-Earth, Mega-Earth, Super-Earth and Earth

A star system made to show the weird Giga-Earth I managed to make. But what's a Giga-Earth? It's simple, that doesn't exist! I just assumed that since a Mega-Earth is around 5–10 Earths masses. A Giga-Earth should be thousand of times heavier than Earth. Hence why a Giga-Earth. (And for people that still don't get why Giga-Earth, the prefix "Giga" mean 10^9 or one billion it is a thousand times the prefix "Mega", 10^6 or one million.) For comparison sake, this add-on also adds a Mega-Earth (Kepler-10c) and a Super-Earth (CoRoT-7b). Giga-Earth specificity : Mass : 1,623 M⊕ Radius : 14. 8 R⊕ Earth similarity : 48. 2% Life likehood : 38. 8%