I haven't touched this thread in months, ,but I'm back with more information, so I don't consider this necromancy. No, I havent yet gotten around to the TAu or Chaos or the others yet. I may be able to at a later point. But I do have revisions to the Imperium's numbers and whatnot, given that I've read some of the Space Wolf novels and also gotten a peek at Dark heresy. The additions are outlined below:
First, of course, the relevant quotes:
Ragnar's Claw, page 330
It occurred to him that quite soon he might feel the same way about Fenris. It was only one world but there were millions of such worlds in the Imperium, separated by thousands of light years of distance. He had heard it said that if a man could visit one new world in the galaxy every day of his life, he would not have visited a thousandth of the inhabited worlds by the time he died.
Assuming "every day of his life" means 70 or 80 years, this works out to between
25,000 and 30,000 days, which in turn is 1/1000th of 25 to 30 million inhabited worlds, minimum. Note that "life" can vary, since on lower tech worlds lifespans can be lower, whereas with life extension technologies life can life up to 100+ years. Possibly even 200 or 300 years.
If the lifespan were a mere
30-40 years, the calc would be roughly half of what I said above
(12-15 million worlds). If we get to
120 years (which is an age given for a priest in the Sisters of Battle codex) or even
200 years (an average minimum age with extended lifespan technologies) the days could be
44,000 to 73,000 - or 44 to 70 million worlds. Given Ragnar's comments as to the age of the Great Wolf relative to normal men (700 years, 10x the span of the oldest morttal on Fenris) 70 years seems a likely number.
In any case...within an order of magnitude we could infer that there are at LEAST many tens of millions of inhabited planets in the Imperium, but quite possibly more depending on how one defined the lifespan, ,but also because its implied that "a thousandth" isnt absolute (it could be a much smaller fraction)
Sisters of Battle 2nd Edition
PAge 5
The Adeptus Ministorum split the Imperium into areas called dioceses, each led by a Cardinal who controlled the Missionaries and Preachers of hundreds of worlds.
This helps to establish the minimum size of a diocese. Which, ironically, is roughly the size of a sector (or possibly several.)
Page 34
There are several thousand Cardinals, each one responsible for a separate diocese in the Imperium.
"several thousand" would imply 2-3000, which would suggest hundreds of thousands of worlds in the Imperium, rather than tens of millions as above. We must note, however, that "several thousand" could be interpreted as meaning differen things (thousands is anything less than a million, after all.)
Also, this could also be considered a "Retcon", since some of the old SoB stuff got changed when they were hooked up to the ORdo Hereticus, so the newer stuff could be said to override the old. Works either way for me, really.
Dark Heresy
page 62
Nevertheless, the Ecclesiarchy is a vast and powerful institution comprising millions of clergymen and hundreds of thousands of dioceses spread across the far reaches of Imperial Space.
Here we learn there are "hundreds of thousands" of dioceses. With
200,000 dioceses, with 200 worlds per diocese (minimum) that is 40 million worlds in the Imperium, which coincides with the estimate from
Ragnar's Claw. This of course depends on how you define the terms above, but in general we can infer
tens if not hundreds of millions of worlds.
Page 127
The Imperium is vast, and amongst its billions of inhabited worlds there are countless forge worlds, factories, ,craftsmen, artificers and blacksmiths turning out weapons and armour. As can be imagined this producees a practically limitless variety of makes, patterns, and brands. It would be impossible to detail eacn and everyh different make of weapon in the Imperium (or even a small fraction of them)...
This implies there are "billions" of inhabited worlds, which is orders o fmagnitude greater than the previous estimates.
This revises some of my earlier conclusions in the following ways:
- The number of sectors goes up quite a bit. With 1 million worlds at 200 planets/sector (as per BFG) you have 5,000 sectors.. or in the tens of thousands of sectors range with "millions" of worlds as established before. With 20-40 million minimum, that number goes up to
100,000-200,000 sectors, minimum.
- Fleet numbers likewise go up. with 50-75 warp capable ships, this means that there are between
5 and 15 million warp capable ships in the Imperial Navy. Odds are its much higher, probably tens of millions. and doesn't include defense ships and smaller vessels.
- The warship breakdown, if we go by previously-established sector models, goes something like this. at least
100,000-200,000 battleships (possibly more.. say 400,000-500,000) a million or more cruiser grade ships (~10 per sector assumed) and the rest escorts of varying classes.
- Transport ships work out to roughly "hundreds" per sector, or roughly an order of magnitude more than the total number of warships. either way this works out to roughly between
tens of millions or hundreds of millions of freighters and transports in the Imperium, depending on how many "hundreds" is or how big you work out the navy to be. (and this could also mean the navy is in the tens of millions of ships range too, arguably.)
- Planetary breakdown: this probably means hundreds of thousands if not millions of hive worlds, millions of civilized planets, and probably hundreds of thousands of forge worlds, easily.
This also, incidentally, means that there are at least hundreds of thousands, if not millions, of potential ship-building facilities in the Imperium, since at least every forge wolrd (if not manyy of the Hive and civilised worlds) could buidl warships. Hell, we know cruiser-grade vessels can be built even at feudal/feral worlds, given time and effort, so you can argue that tens of millions of potential yards exist (at least for escorts and most cruisers!)
- Population: tens of quadrillions easily. Even assuming roughly 2-3 billion per planet, thats
40 quadrillion for 20 million worlds. Of course, the breakdown is more varied, but the hive worlds again will bolster the figure by at least a couple Order so fmagnitude, so it quite possibly could go into the quintillions, even though feral/feudal/agri/forge worlds will have lower popualtions.
- PDF/Guard: going by the "several million" estimate at least, PDFs get into the
tens or hundreds of trillions range easily, ,at least. Guardsmen in the trillions. If we factor in the fact hives are going to be much bigger (and provide more troops) those could increase easily by an order of magnitude or more (
quadrillions of PDF and tens/hundrds of trillions of Guard)
More to come later, with some probable rationalizations for these numbers and the more common "million system" references.