Here are the key facts:

diameter: Ilum, 660 km; Starkiller Base, 660 km

identical

spacial coordinates: Ilum, 7G sector; Starkiller Base, 7G sector

identical

environment: Ilum, Arctic forests glaciers, icy plains, mountains; Starkiller Base, Arctic forests, glaiciers, icy plains, mountains

identical

majore geological feature: Ilum, huge supply of kyber crystals; Starkiller Base, huge supply of kyber crystals

identical

fate: Ilum, heavily strip mined of Kyber crystals for Death Star, Starkiller Base, heavily strip mined for Kyber crystals for Death Star

differences? None

In every respect, Ilum and Starkiller Base match up perfectly.

4 minutes ago, Tramp Graphics said:

Here are the key facts:

diameter: Ilum, 660 km; Starkiller Base, 660 km

identical

spacial coordinates: Ilum, 7G sector; Starkiller Base, 7G sector

identical

environment: Ilum, Arctic forests glaciers, icy plains, mountains; Starkiller Base, Arctic forests, glaiciers, icy plains, mountains

identical

majore geological feature: Ilum, huge supply of kyber crystals; Starkiller Base, huge supply of kyber crystals

identical

fate: Ilum, heavily strip mined of Kyber crystals for Death Star, Starkiller Base, heavily strip mined for Kyber crystals for Death Star

differences? None

In every respect, Ilum and Starkiller Base match up perfectly.

Except that no official Star Wars publication gives a size to Ilum only Wookieepedia does, and even there the Cannon differs from the Legends. But more importantly as useful as Wookieepedia is it's still just a fan site and not always reliable.

5 minutes ago, FuriousGreg said:

Except that no official Star Wars publication gives a size to Ilum only Wookieepedia does, and even there the Cannon differs from the Legends. But more importantly as useful as Wookieepedia is it's still just a fan site and not always reliable.

Wrong. Ilum’s diameter Comes from Star Wars Supergraphic: A Visual Guide to a Galaxy Far, Far Away, a canon source. I’ve read the book. It does say Ilum has a diameter of 660 km, just like Starkiller Base. It’s canon. They are identical in every respect.

12 minutes ago, Tramp Graphics said:

Wrong. Ilum’s diameter Comes from Star Wars Supergraphic: A Visual Guide to a Galaxy Far, Far Away, a canon source. I’ve read the book. It does say Ilum has a diameter of 660 km, just like Starkiller Base. It’s canon. They are identical in every respect.

I said it before, I didn't put it past the Mouse to f it up like this and you can play it that way in your universe but to me it's retconned nonsense that doesn't even remotely fit what we see in the film or in TCW. So enjoy your pyrrhic victory and treat yourself to a cookie, you deserve it

Who was it who said the new canon is about stories, not about facts? Since the story of Ilum's fate hasn't been told yet, there is no complete canonical evidence of what happened. Sounds to me like they're waiting for someone to tell the tale. You may draw what conclusions you like, but it doesn't make it true.

8 minutes ago, FuriousGreg said:

I said it before, I didn't put it past the Mouse to f it up like this and you can play it that way in your universe but to me it's retconned nonsense that doesn't even remotely fit what we see in the film or in TCW. So enjoy your pyrrhic victory and treat yourself to a cookie, you deserve it

I disagree. When I saw the landscape of Starkiller Base in TFA, I was immediately struck by its similarities to Ilum. I was like, “yep, that’s Ilum.” Once their Galactic coordinates were revealed to be the same, I was even more certain. The more information we’ve gotten since has just further cemented those similarities.

Just on the whole gravity and physics thing, Starkiller literally sucks an entire star into it, shouldn’t the force of gravity of the planet skyrocket if there wasn’t some form of artificial gravity there?

36 minutes ago, Tramp Graphics said:

Wrong. Ilum’s diameter Comes from Star Wars Supergraphic: A Visual Guide to a Galaxy Far, Far Away, a canon source. I’ve read the book. It does say Ilum has a diameter of 660 km, just like Starkiller Base. It’s canon. They are identical in every respect.

You're definitely presenting a strong case here. But every respect? I don't think there's enough data to prove that beyond a shadow of a doubt - five data points is hardly exhaustive by any measure, but I'll give you that in Star Wars that likely means something. I highly suspect that Ilum and Starkiller Base were one and the same, but I am open to other ideas.

13 minutes ago, themensch said:

You're definitely presenting a strong case here. But every respect? I don't think there's enough data to prove that beyond a shadow of a doubt - five data points is hardly exhaustive by any measure, but I'll give you that in Star Wars that likely means something. I highly suspect that Ilum and Starkiller Base were one and the same, but I am open to other ideas.

Five out of five is still 100%. How many more comparisons are needed? The only thing Lucasfilm hasn’t done is flat out say Ilum became Starkiller Base. They’ve certainly gone out of their way to establish more than enough evidence that they are.

36 minutes ago, Tramp Graphics said:

Five out of five is still 100%. How many more comparisons are needed? The only thing Lucasfilm hasn’t done is flat out say Ilum became Starkiller Base. They’ve certainly gone out of their way to establish more than enough evidence that they are.

Because 40% of the time it works 100% of the time.

Only including the 5 data points you want is incredibly dismissing of everything else. It's like someone saying that Tramp has 5 letters in and Troll has 5 letters in it and they both start with a letter and that letter is a T therefore Tramp = Troll. There's a whole lot of other data that's being ignored that could potentially prove that conclusion wrong.

Starkiller Base is the worst named and worst conceived thing in Star Wars since the Sun Crusher, whether it’s Ilum or not.

2 hours ago, Ahrimon said:

Because 40% of the time it works 100% of the time.

Only including the 5 data points you want is incredibly dismissing of everything else. It's like someone saying that Tramp has 5 letters in and Troll has 5 letters in it and they both start with a letter and that letter is a T therefore Tramp = Troll. There's a whole lot of other data that's being ignored that could potentially prove that conclusion wrong.

Then let's also compare the second letter of each word to confirm that hypothesis

4 hours ago, Tramp Graphics said:

Five out of five is still 100%. How many more comparisons are needed? The only thing Lucasfilm hasn’t done is flat out say Ilum became Starkiller Base. They’ve certainly gone out of their way to establish more than enough evidence that they are.

How many more comparisons? Well, none. I only need a single fact stating it to convince me beyond a doubt, but hey, that's just me. Part of me hopes there is yet a canonical story to be written and we will find out more soon enough, hence the coy allusions from canonical sources.

15 hours ago, Tramp Graphics said:

I disagree. When I saw the landscape of Starkiller Base in TFA, I was immediately struck by its similarities to Ilum. I was like, “yep, that’s Ilum.” Once their Galactic coordinates were revealed to be the same, I was even more certain. The more information we’ve gotten since has just further cemented those similarities.

You misunderstand I don't mean the snowy mountains and trees and such, although all other depictions and descriptions of Ilum are that it's an ice ball not a planet with surface life, but the problem is it's size. 660km dia. may seem large but thats really just the distance between SF and LA and you can drive that in about 5 hours. It's so small in fact the curvature would be apparent at ground level and if you went up a building, like when Ray and Finn climb up that ladder to meet up with Han and Chewie it would literally look like you were standing on a giant beachball. Think fish eye lens pictures. Thats obviously not what we saw.

Look, don't get me wrong I'm sure the idiots who came up with Star Killer Base could have chosen Ilum before some fan proposed the idea after the film came out but every indication is that they didn't think about it at all and instead retconned it without even checking what lore already existed. This, I believe, is why the Legends info and the "Cannon" info are so different. It's equally as likely that they left out a 0 when coming up with the size of SKB and aren't bothering to fix it because they don't really care. Now you can accept this poorly thought out post hoc shoehorning of the new lore if you want but I'm in the camp that sees it as just another consequence of mistakes JJ Abrams makes over and over again in his movies he doesn’t think through the consequences of his writing. He doesn't care if it makes sense or hooks up in any way with previously founded lore of the property he's working with. He did the same thing with Star Trek with warp drives that allow you to travel across quadrants in minutes and transporters that can do the same in seconds, not to mention the Kahn blood that can bring people back from the dead. The guy doesn't care about the mess he's left to properties we care about.

So, in conclusion: JJ's a short sighted, uninterested in what the fans care about director who makes visually appealing but vapid films. He tosses out lore as you or I would used toilet paper if doesn't look like the cool spectacle he wants on screen and gives no F's as to ripples it causes to the established properties. Because of this it's very possible some lower down the line flunky allowed a fan theory to be retconned into cannon even though it makes no sense, maybe we'll get some official word on it but just as likely they don't care enough to bother. In any case in my games they aren't the same planet, my Ilum is the Legends one because that's what makes sense and fits way better into the lore than this theory does.

17 hours ago, Ahrimon said:

Because 40% of the time it works 100% of the time.

Only including the 5 data points you want is incredibly dismissing of everything else. It's like someone saying that Tramp has 5 letters in and Troll has 5 letters in it and they both start with a letter and that letter is a T therefore Tramp = Troll. There's a whole lot of other data that's being ignored that could potentially prove that conclusion wrong.

No, there isn't. The five data points I gave were really the only data points we have to compare.

17 hours ago, Khazadune said:

Starkiller Base is the worst named and worst conceived thing in Star Wars since the Sun Crusher, whether it’s Ilum or not.

The name Starkiller in Starkiller Base comes from George Lucas' original name for Luke Skywalker. In the original draft of Star Wars, he was named Luke Starkiller.

2 hours ago, FuriousGreg said:

You misunderstand I don't mean the snowy mountains and trees and such, although all other depictions and descriptions of Ilum are that it's an ice ball not a planet with surface life, but the problem is it's size. 660km dia. may seem large but thats really just the distance between SF and LA and you can drive that in about 5 hours. It's so small in fact the curvature would be apparent at ground level and if you went up a building, like when Ray and Finn climb up that ladder to meet up with Han and Chewie it would literally look like you were standing on a giant beachball. Think fish eye lens pictures. Thats obviously not what we saw.

Look, don't get me wrong I'm sure the idiots who came up with Star Killer Base could have chosen Ilum before some fan proposed the idea after the film came out but every indication is that they didn't think about it at all and instead retconned it without even checking what lore already existed. This, I believe, is why the Legends info and the "Cannon" info are so different. It's equally as likely that they left out a 0 when coming up with the size of SKB and aren't bothering to fix it because they don't really care. Now you can accept this poorly thought out post hoc shoehorning of the new lore if you want but I'm in the camp that sees it as just another consequence of mistakes JJ Abrams makes over and over again in his movies he doesn’t think through the consequences of his writing. He doesn't care if it makes sense or hooks up in any way with previously founded lore of the property he's working with. He did the same thing with Star Trek with warp drives that allow you to travel across quadrants in minutes and transporters that can do the same in seconds, not to mention the Kahn blood that can bring people back from the dead. The guy doesn't care about the mess he's left to properties we care about.

So, in conclusion: JJ's a short sighted, uninterested in what the fans care about director who makes visually appealing but vapid films. He tosses out lore as you or I would used toilet paper if doesn't look like the cool spectacle he wants on screen and gives no F's as to ripples it causes to the established properties. Because of this it's very possible some lower down the line flunky allowed a fan theory to be retconned into cannon even though it makes no sense, maybe we'll get some official word on it but just as likely they don't care enough to bother. In any case in my games they aren't the same planet, my Ilum is the Legends one because that's what makes sense and fits way better into the lore than this theory does.

It's quite possible, someone left off a 0 when determining the diameters for Ilum and Starkiller Base respectively, and I agree that tacking on an extra 0 would make perfect sense. However, that doesn't change the fact that they share the same diameter canonically, whether it's 660 Km or 6600 Km makes no difference in that regard.

I go with the 2 may or may not be the same because they have not committed to it being Ilum. So until they commit itnis just a suspicious similarity