One Million Planets

During some downtime at work I wrote up a little R script to generate Classic Traveller1 planet UPPs and then made a dataset with one million worlds.2 The StatsIn this set of 1 million planets, there are 876,000 unique UPPs. The number of possible codes is vast and this dataset barely covers it. The most commonly-repeated UPP only appears 28 times. In general, the most common UPPs are variations on asteroids with 0-1 size, 0 atmosphere, and 0 water. This is a result of the way the rules truncate the possibility space (there are no atmosphere and water values below zero, so die rolls that would have mapped to -30% water just default to 0). PopulationPart of the 'sauce' in CT planet generation is that population is a flat 2d6 roll that doesn't take the planet's physical environment into account. Thus, you can get asteroids with 10 billion people, or lonely outposts of 100 colonists on a vast, verdant earth-like world. I decided to calculate an exact population, per Book 3:3 For example,…