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Ultramarines and their Realm


The Dean

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Thats massive but sounds right. Would need a LOT of ships to cover that, and i doubt that the Iperium with current events could hold all of that secure all of the time. In fact it is well known that they cannot.

 

On the point of the UM having it own in system navy, there is two counters that shows that the =][= may look into it but would do nothing about it, unlike the propose bringing them to tribunal

The galaxy isn't spherical though, it is like disc shaped. Also Sectors dont have to touch like counties or states they can be way the heck away from one another given the necessity for the populations to live on planets that can sustain them. I think it would be possible to have an entire sector that is years away from the next closest sector.
It doesn't matter whether they touch on the map or not. Don't let the map mislead you. There are no borders to be defended. There is no frontier. The only one that matters is the Eastern Fringe, because that's the limit of the Astronomican. The Imperium is composed of loyal human worlds. Scattered throughout the galaxy are uninhabited worlds, alien worlds, chaos worlds, undiscovered planets, etc. These far outnumber the worlds of the Imperium.

The Imperium numbers about a million worlds.

 

There are 200 to 400 billion stars in the galaxy.

 

Even assuming the Imperium were 10 times that size, and that only 1/10 of the stars have planets at all, the Imperium is still only 1/2000th of the available stars.

 

And that's assuming one world per star...

Thats an interesting figure Octavulg, i had understood the Imperium to cover only a part of the galaxy, but i had no idea it was that small....if we consider that the chaos are only really interested in the Imperium, the tau are in a localised area of space, then the rest of the galaxy could contain many other races....aswell as orks, eldar, necrons etc.....

Actually now that im considering it, if we consoder the necrons were evenly spread across the galaxy, then their numbers would be vastly superior than we thought (about 2000x if we assume Octavulg to be correct)....but by using the Tau as an example there could be hundreds of up and coming races, waiting to make thier mark on the rest of us..and going by the grimdark nature of 40k we can pretty much assume they mean us harm....

 

Also it could be considered that the nids have already established quite an empire in our own galaxy, but we cant see it becuase its well beyond the astronomican......

 

Perhaps the lost legions are simply beyond the astronomican and cant find thier way home??

 

Tis the morning for conspiracy theories :)

 

GC08

You can see in the latest edition of the Codex that there are several known Chapters that are based beyond the limits of the Astronomican, which is interesting.

 

Tyranids don't build empires. They eat, reproduce, and move on as soon as they've used up the resources of a planet.

 

While the Imperium may only occupy 1 million planets, it safe to say that they've investigated quite a few more than that, so 2000X Necrons is a bit steep, in my opinion.

 

A bit of info on sectors and subsectors, from White Dwarf 139:

Sectors

 

Each Segmentum is divided into sectors. The size of a Sector varies according to local demands and stellar density. A typical sector might encompass 7 million cubic light years, equivalent to a cube with sides almost 200 light years long.

 

 

 

Sub-Sectors

 

Sectors are divided into sub-sectors, usually comprising between 2 and 8 star systems within a 10 light year radius (some may encompass more systems - others only 1). This size is governed by the practical patrol ranges of spaceships. Because sub-sectors are divisions of worlds (rather than volumes of space) there are vast numbers of star systems within each sector which do not fall within a sub-sector. These are referred to as inter sectors - and are commonly known as wilderness zones, forbidden zones, empty space and frontier space. Inter-sectors may contain gas or dust nebulae, inaccessible areas, alien systems, unexplored systems, uninhabited systems and uninhabitable worlds.

You can see in the latest edition of the Codex that there are several known Chapters that are based beyond the limits of the Astronomican, which is interesting.

How do these chapters travel throught the warp then?

 

Tyranids don't build empires. They eat, reproduce, and move on as soon as they've used up the resources of a planet.

Bad wording on my part, i should have said a foothold, or a significant presence!

 

While the Imperium may only occupy 1 million planets, it safe to say that they've investigated quite a few more than that, so 2000X Necrons is a bit steep, in my opinion.

The 2000x wasnt actually my figure, but i was making the point based on a previously stated estimate!

Whilst the Imperium may have 'investigated' other planets, this figure was based upon one planet per star system, and we know there are usaully more than one inhabitable moon/planet per star system, so its swings and roundabouts...

 

GC08

You can see in the latest edition of the Codex that there are several known Chapters that are based beyond the limits of the Astronomican, which is interesting.

How do these chapters travel throught the warp then?

 

I was under the impression Astropathic choirs were like road signs in the warp. For instance say you are several lightyears beyond the borders of the Astronomican, your navigator would look at the flickering beacon on Planet Y, jump there find the Astronomican and then jump back reorient.

The WD thing Pariah quoted is the same numbers I've been working off of this whole time.......

 

I think it COULD be sector sized to be honest.

IF the 40k Starmap is to be believed then Ultramar is something like 3500 lightyears long by 1400 lightyears wide and presumably it has some "thickness" too (maximum of 1000 lightyears thick, because that's the thickness of the Milky Way).

According to Lexicanum

Each Segmentum is divided into Sectors. The size of a sector varies according to local demands and stellar density. A typical sector might encompass 7 million cubic light years, equivalent to a cube with sides almost 200 light years long. Sectors are in turn divided into Subsectors.
(apparently from WD 139 or 140)

This would imply Ultramar to actually be numerous Sectors in size.

And actually this galaxy map is only 50,000 lightyears across when the real Milky Way is 100,000 lightyears across, soooo.....that would make Ultramar actually twice that big in every dimension and even if THIS particular map is out of whack all the others do tend to show something similar.

Marshal2 Crusaders has it about right, in my opinion. Astropaths can create short-ranged psychic peacons. They have a range of 10 light years, according to Rogue Trader. A "choir" could perhaps increase that radius.

 

Brother Pariah, that last post was vastly helpful and interesting. *starts incorporating in fluff*

 

How old is that WD? I'm guessing it's the US version? That would be around 2nd edition time?

It's from 1991. I think it's before the US/UK WD split. It was released during first edition, in conjunction with Space Fleet (a sort of primitive version Battlefleet Gothic).

If you also take in to account that different galaxy can take a number of shapes, there are those that are more like a cork skrew, and that most of the stars we can see are long gone, then maybe the million stars has some bearing.

 

Of course, then you have the wider universe to consider.

 

Back on topic, whats so difficult about the UM having a strong presence in there Realm, the SW have a strong one in theres, in fact amy planets near Ferris share the same customs.

It'd take an awful lot of Astropaths to beacon across the galaxy if they stack..... unless their powers combine exponentially...

More likely just the opposite. Inverse square law and all that. Though I suppose applying principles of physics to the Warp is a fools errand.

It'd take an awful lot of Astropaths to beacon across the galaxy if they stack..... unless their powers combine exponentially...

The Galaxy is 100,000 LY across.... so 10,000 Astropaths? @_@

 

How many Psychers are fed into the Golden Throne per day? :blush:

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