ELW orbiting a Class L star?

rOmiLaYu · Jul 20, 2020

Is that an oddity? A tidally locked ELW at that. I've never run across one...just curious.

And whilst I'm on the subject of oddity....a white T Tauri star? I ran into one of those last night and thought my fuel scoop had broken as it didn't scoop. Checked and sure it enough, it was a T Tauri star, but it was white.

Heavy Johnson · Jul 20, 2020

Exploration rarities and statistics - what you should look for

Marx posted a helpful thread about the rarity of various Earthlike worlds. Going on that topic, and because of the repeat questions I see of "what is really rare or unusual?", presented here is a list of things that are unusual or rare. These are rare enough that the Galactic Mapping Project...

forums.frontier.co.uk

Sysmon · Jul 20, 2020

The plot of the Stephen Baxter book Proxima is basically over that constellation. Should be possible then, and I think I have seen one such ELW in-game. Definitely not normal for ELWs! Good find.

T Tauris come in all sorts of colours...

S

rOmiLaYu · Jul 20, 2020

Heavy Johnson said:
Exploration rarities and statistics - what you should look for

Marx posted a helpful thread about the rarity of various Earthlike worlds. Going on that topic, and because of the repeat questions I see of "what is really rare or unusual?", presented here is a list of things that are unusual or rare. These are rare enough that the Galactic Mapping Project...

forums.frontier.co.uk

According to Marx's thread an ELW at main star L class is very rare indeed. Trouble is, mine wasnt the main star. So what's that mean?

rOmiLaYu · Jul 20, 2020

Sysmon said:
T Tauris come in all sorts of colours...

S

Good to know. I swear that I've only ever seen them in orange.

Sysmon · Jul 20, 2020

rOmiLaYu said:
Good to know. I swear that I've only ever seen them in orange.

Deep red and indeed white to blueish are possible variants!

S

rOmiLaYu · Jul 20, 2020

Sysmon said:
Deep red and indeed white to blueish are possible variants!

S

Probably should head over to the "Things you haven't noticed after 1000's of hours in game" and post this.

Heavy Johnson · Jul 20, 2020

Is it the primary star that is L? Because if it's orbiting an L and you have another star in the system, it's not that rare.

Sysmon · Jul 20, 2020

Heavy Johnson said:
Is it the primary star that is L? Because if it's orbiting an L and you have another star in the system, it's not that rare.

Don't listen to HJ, it's still quite rare.

S

Vayporz · Jul 20, 2020

...wish the Tidally locked ELWs looked like an eyeball...

rOmiLaYu · Jul 20, 2020

Heavy Johnson said:
Is it the primary star that is L? Because if it's orbiting an L and you have another star in the system, it's not that rare.

Yeah, it's one of three stars. The "L" is not the primary star.

rOmiLaYu · Jul 20, 2020

Sysmon said:
Don't listen to HJ, it's still quite rare.

S

I'll give him a pass. He's still all grumpy after spending eleventy billion CR's on a bar at the end of nowhere.

Heavy Johnson · Jul 20, 2020

Sysmon said:
Don't listen to HJ, it's still quite rare.

S

No.

SQL:

SELECT COUNT(DISTINCT earthlike.SystemID) FROM "earthlike"
INNER JOIN "brown-dwarf"
ON "earthlike".SystemID = "brown-dwarf".SystemID
WHERE "Type" LIKE "%L (Brown dwarf) Star%"

9952

Sysmon · Jul 20, 2020

Heavy Johnson said:

No.

SQL:

SELECT COUNT(DISTINCT earthlike.SystemID) FROM "earthlike"
INNER JOIN "brown-dwarf"
ON "earthlike".SystemID = "brown-dwarf".SystemID
WHERE "Type" LIKE "%L (Brown dwarf) Star%"

9952

9,952/400,000,000,000 = 0.00000002488.

Even in my line of work, that's a very low prior probability.

S

Heavy Johnson · Jul 20, 2020

Sysmon said:
9,952/400,000,000,000 = 0.00000002488.

Even in my line of work, that's a very low prior probability.

S

facepalm
Do you not understand how rarity works? It's the rarity of the ELW to other ELWs, not the raw percentage of everything in the entire universe.

Heavy Johnson · Jul 20, 2020

By this logic, literally every icy body is INCREDIBLY RARE, because 61,138,511 / 400,000,000,000 = 0.00015284 ...

Mooing · Jul 20, 2020

Heavy Johnson said:

No.

SQL:

SELECT COUNT(DISTINCT earthlike.SystemID) FROM "earthlike"
INNER JOIN "brown-dwarf"
ON "earthlike".SystemID = "brown-dwarf".SystemID
WHERE "Type" LIKE "%L (Brown dwarf) Star%"

9952

I think that makes it twice as common as ringed ELWs or ELMs. Still a good find, I've only found one while I have 8 ringed ELWs.

Sysmon · Jul 20, 2020

Heavy Johnson said:
facepalm
Do you not understand how rarity works? It's the rarity of the ELW to other ELWs, not the raw percentage of everything in the entire universe.

Yes*.

It is here considered to be the chance of someone exploring running into an ELW orbiting a brown dwarf. What the chances are compared to running into other stars with ELWs is interesting in itself, but not immediately relevant to the OP.

S

*He really is grumpy! It's OK...

Sysmon · Jul 20, 2020

Heavy Johnson said:
By this logic, literally every icy body is INCREDIBLY RARE, because 61,138,511 / 400,000,000,000 = 0.00015284 ...

There's an issue here though: That assumes that every single icy body has already been discovered. But not all 400,000,000,000 stars have been visited yet.

To get a better probability indicator, we need to use the number of stars explored so far. That really goes for both the case of a finding an ELW around brown dwarf and finding any icy body.

EDIT: Let's say 150,000,000 stars have been explored so far (the number was suggested to be 144,000,000 in November 2019, or 0.036% of the galaxy). Then the chance of finding an icy body is around 43% upon entering a new system. Finding an ELW (around a brown dwarf) is 0.007%.

Still very rare!

S

Heavy Johnson · Jul 20, 2020

The OP asked "[ELW orbiting a Class L star?] Is that an oddity? A tidally locked ELW at that. I've never run across one...just curious. "

The answer to that question is relative to "oddity", but by the standards of other ELWs, it isn't really an "oddity". If you want to go and define "oddity" different, knock yourself out, but for people who actually follow the rarities of the stellar bodies. and spend exhaustive time cataloguing them - like I have - then it isn't. You may as well say "you found any ELW at all, what an oddity!" and you'd still be "technically correct".

I'd like to be able to tell you the rarity of ELWs with primary class L-stars, because that is far lower, but the query is taking excessively long to complete.

Sysmon said:
There's an issue here though: That assumes that every single icy body has already been discovered. But not all 400,000,000,000 stars have been visited yet.

Exactly the same problem applies to your attempt to use the entire galaxy in when comparing L type stars with ELWs.